supersedes i235-35 august 2014 ultrasil polymer-housed ... · • iec 60099-4 testing – full...

Surge ArrestersCatalog DataCA235029EN

Effective February 2016Supersedes I235-35 August 2014

COOPER POWERSERIES

GeneralEaton recognizes the advantages of polymer-housed arresters with reduced size and weight and enhanced safety in this generation of Cooper Power™ series UltraSIL® polymer-housed VariSTAR® surge arresters.

The UltraSIL polymer-housed VariSTAR surge arrester incorporates the industry recognized superior polymeric material – silicone rubber.

Using Metal Oxide Varistors (MOVs) having excellent electrical properties, these arresters provide superior overvoltage protection for MV distribution systems. Manufacturing our own MOV disks allows strict quality control over the manufacturing process from start to finish.

After production, every MOV disk must pass a series of electrical tests designed to ensure the highest individual disk quality. These MOV disks have proven their reliability and protective abilities through years of in-service use.

UltraSIL polymer-housed VariSTAR surge arresters are available in 5 kA and 10 kA Class 1 IEC 60099-4 designs.

ConstructionThe MOV disks are combined with aluminum end electrodes and are encapsulated in a high-strength composite wrap insulating material on our fully automated assembly line using strict quality control processes that eliminate manufacturing variances. The composite collar is cured to the MOV disk stack to form a solid insulation MOV disk module system that is inserted and bonded to the industry leading track resistant UltraSIL silicone rubber housing. This exclusive patented manufacturing process forms a secondary moisture seal under the primary silicone rubber housing seal, which makes the arrester impervious to moisture and capable of withstanding extreme electrical, environmental and cantilever load conditions. The composite wrapped UltraSIL polymer-housed VariSTAR surge arrester design represents a quantum leap in polymer arrester technology.

UltraSIL polymer-housed VariSTAR surge arresters 5 kA and 10 kA Class 1 IEC 60099-4 for MV systems to 36 kV

twhite

LAP

Features and detailed description

Figure 1. Cutaway illustration of an UltraSIL polymer-housed VariSTAR surge arrester.

STAINLESS STEEL12 mm LINE TERMINAL3/8" (Optional)

ALUMINUM GROUND ELECTRODE

OPTIONAL GROUND LEAD DISCONNECTOR

NAMEPLATE INFORMATION

STAINLESS STEEL TOP CAP

ALUMINUM LINE ELECTRODE

UltraSIL SILICONE RUBBER HOUSING

METAL OXIDE VARISTAR (MOV) DISKS

BONDED SOLID INTERFACE

FIBERGLASS REINFORCED EPOXY COMPOSITE

OPTIONAL INSULATING

GLASS-FILLED THERMOSET

POLYESTER HANGER

STAINLESS STEEL 12 mm GROUND TERMINAL3/8" (Optional)

kV RATING LABEL (VISIBLE FROM GROUND)

Arrester Type UNS UHS

System Application Voltages 3-36 kV 3-36 kV

Rated Arrester Voltages, Ur 3-36 kV 3-36 kV

Power System Frequency 50-60 Hz 50-60 Hz

Applicable Design and Test Standard IEC 60099-4 IEC 60099-4

Nominal Discharge Current 5 kA 10 kA

Line Discharge Class – 1

High Current Withstand 65 kA 100 kA

Pressure Relief Class 20 kA (rms Sym.)(B)

20 kA (rms Sym.)(B)

Maximum Energy, 2000 μs Square Wave (Repeatable 1 min)

1.83 kJ/kV Uc 2.85 kJ/kV Uc

High Current, Short Duration Energy Handling (65 kA) 3.17 kJ/kV Uc (100 kA) 3.9 kJ/kV Uc

2

Catalog Data CA235029ENEffective February 2016

UltraSIL polymer-housed VariSTAR surge arresters

www.eaton.com/cooperpowerseries

FeaturesThe UltraSIL silicone rubber housing has undergone a wide range of design tests to determine the optimum shed configuration. In addition, long term environmental testing has verified the lifetime superiority of UltraSIL silicone rubber when compared to other polymeric insulating materials.

Independent laboratory tests have verified the superiority of silicone rubber in terms of hydrophobicity, resistance to UV and surface tracking performance in contaminated environments, chemical inertness, temperature stability and other key insulating properties.

UltraSIL silicone rubber will not support biological growth (algae and mildew) and is non-flammable.

A ground lead disconnector is optionally available for use on systems having 20 A or more of available fault current. The disconnector will sense and disconnect the ground terminal in the unlikely event of arrester failure, preventing a permanent system short circuit. A disconnector that has operated gives a visual indication of internal arrester damage and the need for arrester replacement. See Figure 2 for the disconnector operating characteristics.

Customers looking to improve system reliability by minimizing wildlife related outages now have multiple options. In addition to the standard wildlife protector, featuring two self-adjusting "valve" style openings (see Figure 11 for a dimensional diagram) Eaton also offers the more robust line terminal wildlife guard. The line terminal wildlife guard is easily retrofitted to existing arrester installations and provides increased electrical insulation for the high voltage terminal of the arrester. The flexible design of the line terminal wildlife guard allows insertion of the lead wire through the bottom of the integral molded flanges. The access holes molded above the flanges will allow conductor sizes ranging from 0 to 0.50" in diameter (OD). The line terminal wildlife guard geometry allows water to shed away from the surface area of the wildlife guard while minimizing ice buildup and maintaining flexibility through extreme operating temperatures. Refer to Figure 12 for a dimensional diagram.

For complete wildlife resistance, the ground terminal wildlife guard can easily be installed alongside the line terminal wildlife guard or standard wildlife protector. The ground terminal wildlife guard is a compact and economical guard that ensures wildlife is unable to come in contact with energized objects while on a grounded surface. See Figure 13 for a dimensional diagram.

OperationThe operation of the UltraSIL polymer-housed VariSTAR surge arrester is typical of gapless metal oxide arresters. During steady state conditions, line-to-ground voltage is continuously across the arrester terminals. When overvoltages occur, the surge arrester immediately limits the overvoltage to the required protective level by conducting only the necessary level of surge current to earth. Upon passage of the overvoltage condition, the surge arrester returns to its initial condition once again, conducting only minimal leakage current.

Design testingThe housing material, internal components and hardware work as a system and stand up to years of exposure to environmental extremes. To assure a superior level of performance, the components and the assembled arrester units have been subjected to a testing program that accurately simulates years of exposure to field conditions. Tests include:• IEC 60099-4 Testing – Full certification to performance

requirements by an independent laboratory has been completed. See CP0606, IEC UHS 10 kA Arrester Certified Test Report, and CP0504 IEC UNS 5 kA Arrester Certified Test Reports for details. Additional reference documents are listed on page 17.

Routine testsA complete automated production test program ensures a quality product. Each metal oxide varistor receives a series of electrical tests. Quality is further demonstrated by tests performed to destruction on samples from every lot of varistors.

Listed are the varistor tests performed in accordance with IEC 60099-4:• Physical Inspection• Discharge Voltage • V1mA/cm2

• Leakage Current at 80% of V1mA/cm2 Voltage• High Current, Short Duration Withstand • Thermal Stability • Aging

Each fully assembled UltraSIL polymer-housed VariSTAR surge arrester must pass the following routine tests:• Physical Inspection• Reference Voltage Test

UNS Iref = 3 mA UHS Iref = 4 mA

• Partial Discharge Test @ 1.05 x Uc ≤ 10 pc

General application recommendationsThe rating of an arrester is the maximum power frequency line-to-ground voltage at which the arrester is designed to pass the IEC operating duty test. Table 1 provides a general application guide for the selection of the proper arrester rating for a given system voltage and system grounding configuration.

Gapless surge arresters must be selected with sufficient steady-state self impedance to withstand the application of line-to-earth power frequency voltages under all system conditions of operation.

3




Continuous voltageA preliminary selection that is based on selecting an arrester having a “Continuous Operating Voltage”, or Uc, that equals or exceeds the normal system maximum line-to-earth operating voltage is made. Reference IEC 60099-5.

Power-frequency overvoltages

The second application criterion to be met is a condition established by the effectiveness of system grounding. During a single line-to-earth fault, under maximum system voltage conditions, the arrester selected should have a “Rating” (Ur) that will not be exceeded by the voltages on the unfaulted phases at the point of arrester application. One must pay particular attention to systems having low coefficients of grounding, ungrounded systems and systems that are resonant grounded or that may become ungrounded under abnormal conditions of operation. This second voltage consideration may be modified for various system conditions as long as the application does not violate the selected arrester’s “Temporary Overvoltage Capability (TOV)” (see Figure 3).

Temporary system conditions resulting in sinusoidal power-frequency voltages that exceed arrester “Continuous Operating Voltage, (Uc)” or even “Arrester Rating, (Ur)” can be allowed. Consider the permissible magnitude and duration of these overvoltages (including the full time of system back-up protection), with appropriate allowances for any recent arrester discharge energies.

The voltage withstand capability application on ungrounded systems is 1.035 per unit of COV (Uc) for 24 hours. Systems which permit earth faults to remain undetected or operate with one phase earthed for periods in excess of 24 hours will require the use of an arrester having a Uc (continuous capability) equal to the system maximum phase-to-phase voltage.

Under some special system conditions, such as transformer energization using certain types of connections and ferroresonance, higher voltages can be experienced by the arrester.

Consult with your Eaton representative to have your individual system application needs reviewed.

Performance test characteristicsUltraSIL polymer-housed VariSTAR surge arresters meet the following design tests as described by IEC 60099-4:• Operating Duty Test:

UNS–twenty (20) current surges of 5 kA, 8/20 µs waveshape followed by two (2) high current surges of 65 kA crest (4/10 µs).

UHS–twenty (20) current surges of 10 kA, 8/20 µs waveshape fol-lowed by two (2) high current surges of 100 kA crest (4/10 µs).

• Long Duration Current Impulse Withstand Test:

UNS–eighteen (18) current surges of 75 A, 1000 µs duration.

UHS–eighteen (18) current surges of the energy associated with the line parameters for IEC Class 1 performance (approximately 250 A, 2000 µs).

Following each of these tests, the arresters remain thermally stable as verified by:• Continually decreasing leakage current values during a thirty

minute power monitoring period when energized at Uc.• No evidence of physical or electrical deterioration.• The In (5 kA or 10 kA) discharge voltage measured after each

test changed less than 5% from the initial values.

Full IEC 60099-4 certification has been completed and independently verified.

Pressure relief (fault current withstand tests)These tests demonstrate the ability to withstand fault currents for specific durations.

All UltraSIL polymer-housed VariSTAR surge arresters have been tested in accordance with the requirements listed in IEC 60099-4 and are non-fragmenting to the levels shown in Table 2.

Table 1. Commonly Applied Voltage Ratings (Ur)

System Voltage(kV rms)

Arrester Rating — Ur(kV rms)

Nominal Maximum

Four-Wire StarMulti-GroundedNeutral

Three-Wire StarSolidly GroundedNeutral at Source

Delta, Ungrounded,& Resonant Impedance Grounded Star

3.3 3.7 3 6 6

6.6 7.3 6 9 9

10.0 11.5 9 12 12-15

11.0 12.0 9-10 12 12-15

16.4 18.0 15 – 18-21

22.0 24.0 18-21 24 24-27

33.0 36.3 27-30 36 36-36

Table 2. Pressure Relief Tests

Arrester Type

IEC Pressure ReliefClass

Fault CurrentAmplitude(kA rms) Sym.

Minimum Fault Current Duration(Seconds)

UNS/UHS B 0.820

0.50.2

Figure 2. UNS and UHS disconnector operating characteristic.

10.0

1.0

0.1

0.0110 100 1000 10000

ARRESTER FAULT CURRENT (A rms)

IGN

ITIO

N T

IME

(S

EC

ON

DS

)

4




Temporary overvoltage (TOV) capability (power frequency withstand voltage versus time characteristic)The ability to withstand system power frequency overvoltage conditions is shown in Figure 3. The graph shows for a given voltage magnitude (on a per unit of Uc basis), the time an arrester can survive a temporary power frequency overvoltage condition and recover without thermal runaway.

Protective characteristicsUltraSIL polymer-housed VariSTAR surge arresters provide excellent overvoltage protection for electrical equipment throughout the MV distribution system.

The protective characteristics of the surge arrester family are shown in Tables 3 and 4.

Figure 3. Temporary Overvoltage Capability (followed by Uc), 60° C ambient, UNS and UHS. The 24 hour TOV without prior duty is 1.173 per unit of Uc. The 24 hour TOV with prior duty is 1.035 per unit of Uc.

Table 3. Protective Characteristics – UNS, In = 5 kA IEC 60099-4

UrArresterRating(kV rms)

UcCOV(kV rms)

Steep CurrentResidualVoltage(kV Crest)

Lightning Impulse Residual Voltage(kV Crest)8/20 µs Current Wave

1.5 kA 3 kA 5 kA 10 kA 20 kA 40 kA

3 2.55 10.9 9.0 9.7 10.4 11.4 13.0 15.1

6 5.1 21.8 17.9 19.4 20.8 22.7 26.0 30.2

9 7.65 31.4 25.8 28.0 30.0 32.8 37.4 43.5

10 8.4 32.7 26.9 29.1 31.2 34.1 38.9 45.3

12 10.2 41.1 33.8 36.5 39.2 42.9 48.9 56.9

15 12.7 51.3 42.2 45.7 49.0 53.6 61.1 71.1

18 15.3 61.6 50.6 54.8 58.8 64.3 73.4 85.3

21 17.0 65.4 53.7 58.2 62.4 68.2 77.9 90.6

24 19.5 76.3 62.7 67.8 72.8 79.6 90.8 106.0

27 22.0 86.3 71.0 76.8 82.4 90.1 103.0 120.0

30 24.4 96.2 79.1 85.6 91.8 100.0 115.0 133.0

33 27.0 107.0 87.8 95.6 102.0 112.0 127.0 148.0

36 29.0 115.0 94.7 103.0 110.0 120.0 137.0 160.0

Vo

ltag

e (p

er u

nit

CO

V)

UltraSIL Class 1 - 10kAVariSTAR Arrester

1.518

1.436

1.359

1.286

1.217

1.151

1.089

1.748

1.650

1.558

1.471

1.389

1.311

1.238

1.000

1.100

1.200

1.300

1.400

1.500

1.600

1.700

1.800

0.01 0.1 1 10 100 1000 10000

Time (sec)

Volta

ge (p

er u

nit C

OV)

Prior DutyNo Prior Duty

Time (sec)

5




Table 5. Housing Insulation Withstand Voltages, Ur 3-36 kV, UNS and UHS, In = 5 & 10 kA Class 1

ArresterMounting

Configuration

ArresterHousingDesignation (Digits 6 & 7)

Leakage Distance

(mm)Strike(mm)

1.2/50µsImpulse

(kV Crest)

1 min. Dry(kV rms)

1 min.Wet(kV rms)

1.2/50µsImpulse

(kV Crest)

1 min. Dry(kV rms)

1 min.Wet(kV rms)

1.2/50µsImpulse

(kV Crest)

1 min. Dry

(kV rms)

1 min.Wet(kV rms)

1.2/50µsImpulse

(kV Crest )

1 min. Dry(kV rms)

1 min.Wet(kV rms)

1.2/50µsImpulse

(kV Crest)

1 min. Dry(kV rms)

1 min.Wet

(kV rms)

03 183 79 Dry 47 23 92 50 36 70 44 22 85 53 29 70 42 23

04 256 106 (kV rms)

56 34 105 55 38 79 52 33 99 56 37 82 51 33

05 330 133 104 64 43 117 63 51 89 55 42 109 60 49 90 62 45

06 404 159 117 78 55 126 86 57 93 61 48 119 80 58 97 72 55

07 477 186 129 87 66 137 96 68 98 62 51 122 81 60 107 81 66

08 551 213 140 96 77 148 106 79 104 65 55 126 82 65 118 89 78

09 625 239 – – – 159 116 90 – – – 130 83 70 129 98 89

10 698 266 – – – 171 126 100 – – – 136 86 75 140 106 99

11 772 293 – – – 183 135 111 – – – 142 90 80 152 114 109

12 846 320 – – – 195 144 121 – – – 149 94 86 164 122 119

13 919 346 – – – 207 153 131 – – – 158 99 92 177 130 128

14 993 373 – – – 220 161 140 – – – 167 105 98 190 138 137

15 1067 400 – – – 233 170 150 – – – 177 112 105 204 146 146

16 1140 426 – – – 246 178 159 – – – 187 120 112 218 154 154

17 1214 453 – – – 259 185 168 – – – 199 128 120 233 161 162

18 1288 480 – – – – – – – – – – – – 248 169 169

19 1361 506 – – – – – – – – – – – – 264 178 176

20 1435 533 – – – – – – – – – – – – 280 184 183

21 1509 560 – – – – – – – – – – – – 296 191 189

Insulation withstand characteristics

105 mm 127 mm105 mm 127 mm

Table 4. Protective Characteristics – UHS, In = 10 kA, Class 1 IEC 60099-4

Ur Arrester Rating(kV rms)

UcMCOV(kV rms)

Steep Current Residual Voltage (kV, peak)

Lightning Impulse Residual Voltage (kV crest) 8/20 μs Current Wave 30/60 Switching Surge

1.5 kA 3 kA 5 kA 10 kA 20 kA 40 kA 125 A 500 A

3 2.55 10.8 8.2 8.7 9.1 9.9 10.9 12.3 7.1 7.6

6 5.1 21.5 16.3 17.4 18.2 19.8 21.9 24.7 14.1 15.1

9 7.65 32.4 24.6 26.1 27.3 29.8 33.0 37.1 21.3 22.7

10 8.4 34.4 26.0 27.7 29.0 31.6 34.9 39.4 22.6 24.1

12 10.2 43.2 32.7 34.8 36.4 39.7 43.9 49.5 28.3 30.3

15 12.7 52.2 39.6 42.1 44.0 48.0 53.1 59.8 34.3 36.6

18 15.3 64.8 49.1 52.3 54.7 59.6 65.9 74.2 42.6 45.5

21 17 68.8 52.1 55.4 58.0 63.2 69.9 78.7 45.1 48.2

24 19.5 79.5 60.2 64.1 67.0 73.1 80.8 91.1 52.2 55.8

27 22 92.4 70.0 74.5 77.9 84.9 93.9 106 60.6 64.8

30 24.4 100.5 76.1 81.0 84.7 92.4 102 115 66.0 70.5

33 27 114.2 86.5 92.1 96.3 105 116 131 75.0 80.1

36 29 120.8 91.5 97.3 102 111 123 138 79.3 84.7

6




Figure 4. UltraSIL polymer-housed VariSTAR surge arrester–with optional insulated mounting bracket, and disconnector.

Figure 5. UltraSIL polymer-housed VariSTAR surge arrester without disconnector, for base or cable riser mounting (arrester may be horizontal or vertical with either end at line potential).

Figure 6. UltraSIL polymer-housed VariSTAR surge arrester as in Figure 4 with NEMA® crossarm hanger, see Figure 8.

Figure 7. UltraSIL polymer-housed VariSTAR surge arrester–with optional disconnector mounting bracket (no disconnector).

Dimensions and clearancesOutline drawings for common options are shown. Dimensions (shown in mm) for these arrangements are listed in Table 6.

A

B

30

IN = 5 kA, O = 83 mmIN = 10 kA, O = 89 mm

DIAMETER (All Figures):

14

23

30

MOUNTING HOLE FOR 1/2" or 12 mm O HARDWARE

A

B

43

102-127

0-102

65

30 14

30

23

C

28

30

RATED CANTILEVERSTRENGTH IS5 kA = 450 Nm10 kA = 450 Nm

MAXIMUM PULLSTRENGTH (Tension)IS 5,000 N.

H

B

14

30

28

MOUNTING HOLE FOR 1/2" or 12 mm O HARDWARE

SPACING BETWEENSHEDS IS 27 mm (All Ratings)

Table 5a. Insulation Withstand Characteristics of Optional Insulated Mounting Bracket

Insulated MountingBracket

Bracket Mounting Length Center-to-Center(mm)

Leakage Distance(mm)

Strike(mm)

Power FrequencyVoltage Withstand(60 sec, Wet, kV)

1.2/50µs Impulse(kV Crest)

Standard ForUr = 3 – 10 kV 105 150 71 36 70

Standard ForUr = 12 – 36 kV 127 226 99 48 80

7




Table 6. Dimensional Data - UNS and UHS

Ur

Housing Designation (Digits 6 & 7Table 9)

Dimensions - Figures 4-7 page 7 (mm)

A B C H

3-10

03 162 105 146 140

04 190 105 174 168

05 218 105 202 196

06 246 105 230 224

07 272 105 255 249

08 300 105 283 277

12-36

06 246 127 230 224

07 272 127 255 249

08 300 127 283 277

09 325 127 308 302

10 353 127 336 330

11 381 127 364 358

12 406 127 390 384

13 434 127 418 412

14 462 127 446 440

15 488 127 471 465

16 – – 499 –

17 – – 527 –

18 – – 555 –

19 – – 583 –

20 – – 611 –

21 – – 639 –

Table 7. Minimum Recommended Clearances

Ur Arrester Rating (kV rms)

Clearances*Minimum Recommended(mm)

UNSIn = 5 kA

UHSIn = 10 kA

Phase-to-Ground

Phase-to-Phase

Phase-to-Ground

Phase-to-Phase

3 70 95 76 108

6 95 127 102 140

9 127 165 133 178

10 127 165 133 178

12 146 184 152 197

15 165 210 171 222

18 229 273 235 286

21 229 273 235 286

24 267 324 273 337

27 267 324 273 337

30 267 324 273 337

33 318 400 324 413

36 318 400 324 413

* All clearances are measured between centerlines of arresters or from centerline to earth.

Table 8. Catalog Numbers – VariSTAR Distribution-Class Surge Arresters

Arrester Rating

With Isolator and Insulated Hanger (Figure 3)

With Isolator, Insulated Hanger and NEMA Cross-Arm Bracket (Figure 4)

With Insulated Hanger Without Isolator (Figure 6)

3 U*S0303AFDV1AA1 U*S0303AFDV1BA1 U*S0303AFAV1AA16 U*S0604AFDV1AA1 U*S0604AFDV1BA1 U*S0604AFAV1AA19 U*S0905AFDV1AA1 U*S0905AFDV1BA1 U*S0905AFAV1AA110 U*S1005AFDV1AA1 U*S1005AFDV1BA1 U*S1005AFAV1AA112 U*S1206AFDV1AA1 U*S1206AFDV1BA1 U*S1206AFAV1AA115 U*S1507AFDV1AA1 U*S1507AFDV1BA1 U*S1507AFAV1AA118 U*S1808AFDV1AA1 U*S1808AFDV1BA1 U*S1808AFAV1AA121 U*S2109AFDV1AA1 U*S2109AFDV1BA1 U*S2109AFAV1AA124 U*S2410AFDV1AA1 U*S2410AFDV1BA1 U*S2410AFAV1AA127 U*S2711AFDV1AA1 U*S2711AFDV1BA1 U*S2711AFAV1AA130 U*S3012AFDV1AA1 U*S3012AFDV1BA1 U*S3012AFAV1AA133 U*S3313AFDV1AA1 U*S3313AFDV1BA1 U*S3313AFAV1AA136 U*S3614AFDV1AA1 U*S3614AFDV1BA1 U*S3614AFAV1AA1* Digit 2 Option: N = Normal-Duty, H = Heavy-Duty

ote:N All catalog numbers listed above include a universal wildlife protector.

8




Catalog Number Digits:

6 & 7 = Housing Options Per Arrester Rating – Select from Table below.Ù = Standard Housing O = Housing Options

Table 9. UltraQUIK™ Catalog Numbering System for UltraSIL Polymer-Housed VariSTAR Surge Arresters

1 2 3 4 5 6 7

U S

Digits 6 & 7 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21

Total Leakage Distance (mm)

183 256 330 404 477 551 625 698 772 846 919 993 1067 1140 1214 1288 1361 1435 1509

Arrester Rating (kV rms)

3 Ù O

6 Ù O O

9 Ù O O O

10 Ù O O O

12 Ù O O O O

15 Ù O O O O O

18 Ù O O O O O O

21 Ù O O O O O

24 Ù O O O O O O

27 Ù O O O O O O O

30 Ù O O O O O O O O

33 Ù O O O O O O O O

36 Ù O O O O O O O

Notes:1. Protected leakage distance is approximately 45% of total leakage distance (mm).

2. Total leakage distance shown includes 40 mm of the insulated base/mounting bracket.

8 9 1110 1312 1514

1 = UltraSIL Polymer-Housed VariSTAR Surge Arrester U

2 = Arrester Class: N = In = 5 kA H = In = 10 kA, Class 1

3 = Arrester Type: S = VariSTAR

4 & 5 = Arrester Rating Ur (Uc): 03 = 3 kV (2.55 kV) 15 = 15 kV (12.7 kV) 27 = 27 kV (22.0 kV)

06 = 6 kV (5.1 kV) 18 = 18 kV (15.3 kV) 30 = 30 kV (24.4 kV)

09 = 9 kV (7.65 kV) 21 = 21 kV (17.0 kV) 33 = 33 kV (27.0 kV)

10 = 10 kV (8.4 kV) 24 = 24 kV (19.5 kV) 36 = 36 kV (29.0 kV)

12 = 12 kV (10.2 kV)

9




8 = Line Stud and Lead Options:

• 12 mm Line Terminal Options – all threaded studs are 12 mm x 30 mm long (except options L and M), stainless steel. A = without line lead B = with 300 mm long, 5 mm diameter E = with 450 mm long, 5 mm diameter H = with 750 mm long, 5 mm diameter insulated lead wire insulated lead wire insulated lead wire

C = with 300 mm long, 5 mm diameter F = with 450 mm long, 5 mm diameter J = with 750 mm long, 5 mm diameter insulated lead wire having insulated lead wire having insulated lead wire having (1) ring terminal (1) ring terminal (1) ring terminal

D = with 300 mm long, 5 mm diameter G = with 450 mm long, 5 mm diameter K = with 750 mm long, 5 mm diameter insulated lead wire having insulated lead wire having insulated lead wire having (2) ring terminals (2) ring terminals (2) ring terminals

L = with 45 mm long stud, without M = with 65 mm long stud, without insulated lead wire (will not allow insulated lead wire (will not allow use of universal wildlife protector) use of universal wildlife protector) • 3/8" Line Terminal Options – all threaded studs are 3/8" x 1-3/16" long, stainless steel.

0 = without line lead

1 = with 12" #6 AWG insulated lead wire 4 = with 18" #6 AWG insulated lead wire 7 = with 30" #6 AWG insulated lead wire

2 = with 12" #6 AWG insulated lead 5 = with 18" #6 AWG insulated lead 8 = with 30" #6 AWG insulated lead wire having (1) ring terminal wire having (1) ring terminal wire having (1) ring terminal

3 = with 12" #6 AWG insulated lead 6 = with 18" #6 AWG insulated lead 9 = with 30" #6 AWG insulated lead wire having (2) ring terminals wire having (2) ring terminals wire having (2) ring terminals

9 = Line Terminal Accessories

All line terminal accessory hardware is stainless steel (12 mm or 3/8" Ø, as required for digit 8)

Notes:

1. Wire clamps F, R, and U will accommodate #10 solid to 2/0 AWG or to 4 mm solid diameter wire. Wire clamp V will accommodate 6 mm solid or up to 14 mm diameter stranded conductor.

2. Maximum allowable torque on line terminal is 27 Nm.

3. The universal wildlife protector may only be used with 30 mm or 1-3/16” length stud.

C = No Hardware F= Nut, Wire Clamp & Universal L = 2 each: Nuts, Flat Washers & R = Nut & Wire Clamp Wildlife Protector Lock Washers (Requires “L” or “M” in Digit 8)

4545/65 mm

S = Nut, Lock Washer & T = Nut, Lock Washer (Also for U = Nut & 2 Wire Clamps V = Wire clamp, Nut, & Flat Washer Universal Wildlife Protector leads with ring terminals, see (Also for leads with ring Digit 8) terminals, see Digit 8)

Table 9. UltraQUIK™ Catalog Numbering System for UltraSIL Polymer-Housed VariSTAR Surge Arresters (continued)

1 2 3 4 5 6 7

U S 8 9 1110 1312 1514

10




10 = Ground Terminal Options

12 mm ground terminal options

With ground lead disconnector and stainless steel stud length of

D = 12 mm Ø x 25 mm (Requires “1” in digit 12)

Without ground lead disconnector, stainless steel stud length of A = 12 mm Ø x 30 mm B = 12 mm Ø x 45 mm C = 12 mm Ø x 65 mm

3/8" ground terminal options

With ground lead disconnector and stainless steel stud length of

1 = 3/8" Ø x 1" (Requires "1" in digit 12)

Without ground lead disconnector, stainless steel stud length of

0 = 3/8" Ø x 1-3/16"

11 = Ground Terminal HardwareAll ground terminal accessory hardware is stainless steel (12 mm or 3/8" Ø, as required for digit 10)

Note: Maximum allowable torque on ground terminal is 27 Nm.

12 = Bracket Configurations

13 = Mounting Options

B = No Hardware V = Wire Clamp and Nut W = Washer, (Shown with optional discon- (Shown with optional Lock Washer, and Nut nector and Insulated mounting disconnector and bracket) Insulated mounting bracket)

0 = Base Mounted Arrester 1 = Insulated Mounting Bracket 2 = Conductive Mounting Bracket 3 = Conductive Mounting Bracket (Required with optional For 3/8" Hardware For 12 mm Hardware disconnector) (Requires “0” in Digit 10 and (Requires “A”, “B” or “C” in (Available only if Digits 6 & 7 are “W” in Digit 11 ) Digit 10 and “W” in Digit 11) Housing Options 15 or less*) See Figure 10 for dimensional See Figure 11 for dimensional * For more information contact information. information. your Eaton representative.

A = Without a B = NEMA® Crossarm Hanger Mounting Bracket (Mounting Hardware Included) (Requires "1", "2" or "3" in Digit 12) See Figure 8 for dimensional information.


1 2 3 4 5 6 7

U S 8 9 1110 1312 1514

11




14 = Nameplate Information, See Figures 13 and 14

Nameplate information is per IEC 60099-4. Auxiliary nameplates are available in the following languages:

A = English B = Español – Mexico C = Españ ol – Americas D = Português – Americas E = Españ́ol – Europa F = Português – Europa G = Polski H = Français I = Norsk J = Suomeksi K = Greek L = Italiano M = Russian

15 = Packaging.

1 = Individual carton. Each arrester with accessories is shipped in an individual cardboard carton. Individual cartons are packed within a heavy duty quadwall carton having a skid bottom and suitable for double stacking within an ocean shipping container.

2 = Individual carton. Each arrester is shipped in an individual cardboard carton. Individual cartons are stacked on a pallet and shrink wrapped, suitable for shipment within NAFTA. Quantities per pallet may be adjusted to meet shipping requirements.


1 2 3 4 5 6 7

U S 8 9 1110 1312 1514

12 & 13 = Double Digit Mounting Options with Ground Terminal Wildlife Guard

E8 = Ground Terminal Wildlife Guard, Insulated Hanger(Shown with optional isolator), NEMA® cross-arm bracket (Arrester Mounting Hardware Included)Refer to Figures 8 and 13 for dimensional information

12




Accessories for the UltraSIL polymer-housed VariSTAR surge arrester

Figure 8. NEMA® crossarm hanger can be specified with a "B" in digit 13 (all dimensions are as required to be in inches, per NEMA®).

ZEROTo

4.00

4.12 To

5.15

6.75

2.56

4.50

.344

1.25

.438SQUARE

.438 SQUAREHOLE

.5001.50

3/8" HARDWARE

1/2" HARDWARE

Figure 9. Conductive base mounting for use with 3/8” hardware. Can be specified with a "2" in digit 12. (Requires “0”, "A", "B", or "C" in digit 10, “W” in digit 11.)

114

11 SQUARE

11 SQUAREHOLE

13

13

8

170

9

114

(2) 13 mm O

13

8

32

32

170

13

GALVANIZED STEEL(All dimensions in mm)

Figure 10. Conductive base mounting for use with 12 mm hardware. Can be specified with a "3" in digit 12. (Requires "0", “A”, “B” or “C” in digit 10, “W” in digit 11.)

114

11 SQUARE

11 SQUAREHOLE

13

13

8

170

9

114

(2) 13 mm O

13

8

32

32

170

13

GALVANIZED STEEL(All dimensions in mm)

13




Figure 11. Universal wildlife protector for line terminal (catalog number AV346X1C) adds 5 mm to arrester height above line terminal stud. To be used only with 3/8" or 12 mm Ø line hardware of standard length, 1-3/16" and 30 mm respectively.

20

64

26

56

SLOTSMAY BECUT HERE

UNIVERSALVALVE

OPENING

UNIVERSALVALVE

OPENINGUNIVERSALVALVEOPENING

SIDE VIEW TOP VIEW

152°

(All dimensions in mm)

87

80

Figure 13. Optional ground terminal wildlife guard (catalog number AV731X1C). (All dimensions in mm.) Left shows attachment of ground terminal wildlife guard, right images shows ground terminal wildlife guard completely installed.

42

96

50

53

12 ø199

75

Figure 12. Optional line terminal wildlife guard (catalog number AV698X1C). (All dimensions in mm.)

14




Figure 15. In = 5 kA, UNS Auxiliary Nameplates.

Figure 14. In = 5 kA, UNS Nameplate – stamped in stainless steel top cap.

UNS

RATING (Ur) ___ kV

MMYY

5 kA

MCOV (Uc) ___ kV

Assembled in Mexico

UltraSIL® VariSTAR®DIST. ARRESTER

APARTARRAYOS VARISTAR®

TIPO ULTRASIL™ UNS-ZNOIN = 5 kA IEC 60099-4

Ur = kVUc = kVAdP = 20 kA sim


Ur = kVUc = kVSp = 20 kA sim

PARARRAYOS VARISTAR®


(ESPANOL - MEXICO)˜

VARISTAR® SURGE ARRESTERULTRASIL™ TYPE UNS-ZNOIN = 5 kA IEC 60099-4 P.R. = 20 kA sym

(ENGLISH)

(ESPANOL - AMERICAS)˜

PARA-RAIOS VARISTAR®


(PORTUGUEˆS - AMERICAS)

´´


TIPO ULTRASIL™ UNS-ZNOIN = 5 kA CEI 60099-4


LdeS = 20 kA sim

Pr = 20 kA sym

DESC. DE SOBRET. VARISTAR®


(ESPANOL - EUROPA)˜

(PORTUGUEˆS - EUROPA)

OGRANICZNIK PRZEPIEC VARISTAR®

ULTRASIL™ TYP UNS-ZNOIN = 5 kA IEC 60099-4

(POLSKI)

Ur = kVUc = kVLdP = 20 kA sym

PARAFOUDRE VARISTAR®

MODELE ULTRASIL™ UNS-ZNOIN = 5 kA CEI 60099-4

(FRANÇAIS)


TIPO ULTRASIL™ UHS-ZNOIN = 10 kA CLASE 1 IEC 60099-4







ULTRASIL™ TYPE UHS-ZNO

IN = 10 kA CLASS 1 IEC 60099-4 P.R. = 20 kA sym

(ENGLISH)



TIPO ULTRASIL™ UHS-ZNOIN = 10 kA CLASSE 1 IEC 60099-4


´´


TIPO ULTRASIL™ UHS-ZNOIN = 10 kA CLASE 1 CEI 60099-4


LdeS = 20 kA sim

Pr = 20 kA sym






ULTRASIL™ TYP UHS-ZNOIN = 10 kA KLASA 1 IEC 60099-4

(POLSKI )



MODELE ULTRASIL™ UHS-ZNOIN = 10 kA CLASSE 1 IEC 60099-4

(FRANÇAIS)

VARISTAR® SURGE ARRESTER

VARISTAR® OVERSPENNINGSAVLEDERULTRASIL™ TYPE UNS-ZNOIN = 5 kA IEC 60099-4 KORTSLUTTKAP = 20 kA sym

(NORSK)

´´

RTV = 20 kA sym

VARISTAR® YLIJÄNNITESUOJAULTRASIL™ TYYPPI UNS-ZNOIN = 5 kA IEC 60099-4

(SUOMEKSI) A¥E•IKEPAYNO M.T. VARISTAR®

ULTRASIL™ TYPE UNS-ZNOIN = 5 kA IEC 600

(GREEK)

´P.R. = 20 kA sym

SCARICATORE M.T. VARISTAR®


(ITALIANO)

A¥E•IKEPAYNO M.T. VARISTAR®

ULTRASIL™ TYPE UNS-ZNOIN = 5 kA IEC 60099-4 KORTSLUTTKAP = 20 kA sym

(RUSSIAN)

´

VARISTAR® OVERSPENNINGSAVLEDERULTRASIL™ TYPE UHS-ZNOIN =10 kA KLASSE 1 IEC 60099-4 KORTSLUTTKAP = 20 kA sym

(NORSK)

´´

RTV = 20 kA sym

VARISTAR® YLIJÄNNITESUOJAULTRASIL™ TYYPPI UHS-ZNOIN = 10 kA LUOKKA 1 IEC 60099-4

(SUOMEKSI)



(GREEK)

´P.R. = 20 kA sym



(ITALIANO)



(RUSSIAN)

´

ALEXIKEPAYNO M.T. VARISTAR®

TYPOS ULTRASIL™ UHS - ZNOIN = 10 kA IEC 60099-4 EKT PIES = 20 kA Sy m


TYPOS ULTRASIL™ UNS - ZNOIN =5 kA KLASH 1 IEC 60099-4 EKT PIES = 20 kA Sym

15




Figure 16. In = 10 kA, Class 1, UHS Nameplate–stamped in stainless steel top cap.

UHS

RATING (Ur) ___ kV

MMYY

10 kA

MCOV (Uc) ___ kV

Assembled in Mexico

UltraSIL® VariSTAR®DIST. ARRESTER

Figure 17. In = 10 kA, Class 1, UHS Auxiliary Nameplates.









VARISTAR® SURGE ARRESTERULTRASIL™ TYPE UNS-ZNOIN = 5 kA IEC 60099-4 P.R. = 20 kA sym

(ENGLISH)





´´




LdeS = 20 kA sim

Pr = 20 kA sym






ULTRASIL™ TYP UNS-ZNOIN = 5 kA IEC 60099-4

(POLSKI)



MODELE ULTRASIL™ UNS-ZNOIN = 5 kA CEI 60099-4

(FRANÇAIS)









ULTRASIL™ TYPE UHS-ZNO

IN = 10 kA CLASS 1 IEC 60099-4 P.R. = 20 kA sym

(ENGLISH)





´´


TIPO ULTRASIL™ UHS-ZNOIN = 10 kA CLASE 1 CEI 60099-4


LdeS = 20 kA sim

Pr = 20 kA sym






ULTRASIL™ TYP UHS-ZNOIN = 10 kA KLASA 1 IEC 60099-4

(POLSKI )



MODELE ULTRASIL™ UHS-ZNOIN = 10 kA CLASSE 1 IEC 60099-4

(FRANÇAIS)

VARISTAR® SURGE ARRESTER

VARISTAR® OVERSPENNINGSAVLEDERULTRASIL™ TYPE UNS-ZNOIN = 5 kA IEC 60099-4 KORTSLUTTKAP = 20 kA sym

(NORSK)

´´

RTV = 20 kA sym

VARISTAR® YLIJÄNNITESUOJAULTRASIL™ TYYPPI UNS-ZNOIN = 5 kA IEC 60099-4

(SUOMEKSI) A¥E•IKEPAYNO M.T. VARISTAR®

ULTRASIL™ TYPE UNS-ZNOIN = 5 kA IEC 600

(GREEK)

´P.R. = 20 kA sym



(ITALIANO)



(RUSSIAN)

´

VARISTAR® OVERSPENNINGSAVLEDERULTRASIL™ TYPE UHS-ZNOIN =10 kA KLASSE 1 IEC 60099-4 KORTSLUTTKAP = 20 kA sym

(NORSK)

´´

RTV = 20 kA sym

VARISTAR® YLIJÄNNITESUOJAULTRASIL™ TYYPPI UHS-ZNOIN = 10 kA LUOKKA 1 IEC 60099-4

(SUOMEKSI)



(GREEK)

´P.R. = 20 kA sym



(ITALIANO)



(RUSSIAN)

´


TYPOS ULTRASIL™ UHS - ZNOIN = 10 kA IEC 60099-4 EKT PIES = 20 kA Sy m


TYPOS ULTRASIL™ UNS - ZNOIN =5 kA KLASH 1 IEC 60099-4 EKT PIES = 20 kA Sym

16




Eaton has set the standard for design, manufacturing and delivery of polymeric distribution-class arresters with its Cooper Power™ series UltraSIL™ polymer-housed arrester family. UltraSIL polymer-housed surge arresters incorporate the industry recognized superior polymer housing material – silicone rubber.

Eaton's Cooper Power series VariSTAR™ distribution-class surge arresters are part of the UltraSIL polymer-housed surge arrester product line. VariSTAR surge arresters are available in Normal-Duty, Heavy-Duty and Riser Pole classifications and provide superior overvoltage protection for any electric distribution system.

ConstructionThe patented construction of UltraSIL polymer-housed arresters begins with Metal Oxide Varistors (MOVs) manufactured at our Olean, NY facility. Manufacturing our own MOVs allows for strict quality control over all aspects of disk production. Every MOV must pass a series of physical and electrical tests designed to ensure that only disks meeting strict quality standards are used in UltraSIL arresters. Eaton's MOV disk design has proven its reliability and protective ability through many years of field service.

The MOV disks are combined with aluminum end electrodes and are encapsulated in a high-strength composite wrap insulating material on our fully automated assembly line using strict quality control processes that eliminate manufacturing variances. The composite collar is cured to the MOV disk stack to form a solid insulation MOV disk module system that is inserted and bonded to the industry leading track resistant UltraSIL silicone rubber housing.

Eaton's exclusive patented manufacturing process forms a secondary moisture seal under the primary silicone rubber housing seal, which makes the arrester impervious to moisture and capable of withstanding extreme electrical, environmental and cantilever load conditions. The composite wrapped UltraSIL polymer-housed arrester design represents a quantum leap in polymer arrester technology.

Following assembly, each arrester is subjected to a battery of electrical tests to assure the highest quality and in-service field performance.

UltraSIL™ polymer-housed VariSTAR™ IEEE®surge arresters; normal-duty (5 kA), heavy-duty, and riser pole (10 kA) for MV systems to 36 kV

General

Surge ArrestersCatalog Data CA235005EN

Effective May 2015 Supersedes March 2015

COOPER POWERSERIES

FeaturesUltraSIL silicone rubber polymer-housing has undergone a wide range of design tests to determine the optimum shed configuration. In addition, long term environmental testing has verified the lifetime superiority of silicone rubber when compared to other polymeric insulating materials.

Independent laboratory tests have verified the superiority of silicone rubber in terms of non-wetting surfaces, resistance to UV degradation and surface tracking, performance in contaminated environments, chemical inertness, temperature stability and other important insulating properties. UltraSIL silicone rubber polymer-housing will not support biological growth (algae and mildew), is non-flammable and will not support combustion.

An optional insulated mounting base is available to allow connecting to a wide variety of brackets. The insulated base, made of glass filled polyester, has been designed to provide needed mechanical strength for installation and severe loading conditions.

A ground lead isolator is also available. The isolator removes the ground terminal from the arrester in the unlikely event of arrester failure, thus preventing a permanent system fault. An isolator that has operated gives visual indication of internal damage to the arrester and the need for arrester replacement. See Figure 2 for the isolator operating characteristics.

The optional universal wildlife protector has two self-adjusting "valve" style openings which vary from 0 to 0.75" in diameter, thus allowing for a large variety of conductor/insulation sizes while providing optimum wildlife protection. (See page 11, Figure 8 for a dimensional diagram.)

Customers looking to improve system reliability by minimizing wildlife related outages now have multiple options. In addition to the universal wildlife protector featuring two self-adjusting "valve" style openings, Eaton also offers the more robust line terminal wildlife guard. The line terminal wildlife guard is easily retrofitted to existing arresters installations and provides increased electrical insulation for the high-voltage terminal of the arrester. The flexible design of the

line terminal wildlife guard allows insertion of the lead wire through the bottom of the integral molded flanges. The access holes molded above the flanges will allow conductor sizes ranging from 0 to 0.50” in diameter (OD). The line terminal wildlife guard geometry allows water to shed away from the surface area of the animal guard while minimizing ice build up and maintaining flexibility through extreme operating temperatures. (Refer to page 11, Figure 9 for a dimensional diagram.)

For complete wildlife resistance, the ground terminal wildlife guard can easily be installed alongside the line terminal wildlife guard or universal wildlife protector. The ground terminal wildlife guard is a compact and economical guard that ensures wildlife is unable to come in contact with energized objects while on a grounded surface.(Refer to page 11, Figure 10 for a dimensional diagram.)

OperationThe operation of VariSTAR arresters is typical of gapless metal oxide arresters. During steady state conditions, line-to-ground voltage is applied continuously across the arrester terminals. When surges occur, VariSTAR arresters immediately limits the overvoltage to the required protective level by conducting the surge current to ground. Upon passage of the surge, the arrester returns to its initial state, conducting minimal leakage current.

The protective characteristics of VariSTAR arresters provide excellent overvoltage protection for distribution system equipment. (See page 6 for protective characteristics.)

Design testingThe housing material, internals and hardware work together as a system and must stand up to years of exposure to environmental extremes.

To assure a superior level of performance, both the components and the assembled arrester units have been subjected to a program of testing that accurately simulates years of exposure to actual field conditions. Testing includes:• IEEE Std C62.11-2005™ standard Testing – Full certification to

the performance requirements by an independent laboratory. A certified test report is available under Bulletin Number 95062. Additional reference documents are listed on page 14.

Production testsA complete production test program ensures a quality product. Each metal oxide varistor receives a series of electrical tests. Quality is demonstrated by a series of destructive tests performed on every batch of varistors. Listed are the tests performed on the varistors:• 100% Physical Inspection• 100% Discharge Voltage test• 100% V1mA/cm2

• 100% Leakage Current at 80% of V1mA/cm2 Voltage (Watts Loss)• Batch High-current, Short-duration test• Batch Thermal Stability test• Batch Aging test

Each fully assembled VariSTAR arrester must pass the following production tests:• 100% Physical Inspection• 100% Leakage Current test • 100% Partial Discharge Inception Voltage test

Figure 1. Cutaway illustration of VariSTAR distribution-class arrester.

ALUMINUMLINE ELECTRODE

METAL OXIDEVARISTAR (MOV)DISKS

ALUMINUMGROUND

ELECTRODE

NAMEPLATEINFORMATION

STAINLESS STEELTOP CAP

LINE TERMINAL3/8 INCH STAINLESS STUD

UltraSIL SILICONERUBBER HOUSING

BONDED SOLIDINTERFACE

FIBERGLASS REINFORCEDEPOXY COMPOSITE

OPTIONALINSULATED HANGER

OPTIONALISOLATOR GROUND

LEAD DISCONNECTORkV RATING LABEL(Visible from ground)

GROUND TERMINAL3/8 INCH STAINLESS STUD

2

Catalog Data CA235005ENEffective May 2015



General application recommendationsThe rating of an arrester is the maximum power frequency line-to-ground voltage at which the arrester is designed to pass an operating duty-cycle test. Table 1 provides a general application guide for the selection of the proper arrester rating for a given system voltage and system grounding configuration as outlined in the IEEE Std C62.22™ standard application guide.

Under fault conditions and other system anomalies, higher voltages can be experienced by the arrester. To ensure that the arrester ratings will not be exceeded, Eaton application engineers are available to make recommendations. The following information is normally required:

1. System maximum operating voltage.

2. System grounding conditions.

A. For four-wire circuits, grounding conditions depend upon whether the system is multi-grounded, whether it has a neutral impedance and whether common primary and secondary neutrals are used.

B. For three-wire circuits, grounding conditions depend upon whether the system is solidly grounded at the source, grounded through neutral impedance at the source transformers or ungrounded.

Consult your Eaton representative to have your individual system application needs reviewed.

Performance test characteristicsVariSTAR distribution-class arresters withstand the following design tests as described by IEEE Std C62.11-2005™ standard:• Duty Cycle:

Normal-Duty: 22 current surges of 5 kA crest, 8/20 µs waveshape.Heavy-Duty and Riser Pole: 20 current surges of 10 kA crest, 8/20 µs waveshape followed by 2 current surges of 40 kA crest, 8/20 µs waveshape.

• High-current, Short-duration Discharge: Normal-Duty: 2 current surges of 65 kA crest, 4/10 µs waveshape.Heavy-Duty and Riser Pole: 2 current surges of 100 kA crest, 4/10 µs waveshape.

• Low-Current, Long-Duration Discharge: Normal-Duty: 20 current surges of 75 A crest 2000 µs duration rectangular wave. Heavy-Duty and Riser Pole: 20 current surges of 250 A crest 2000 µs duration rectangular wave.

Following each of these tests, the arresters remain thermally stable as verified by:• Continually decreasing power values during a thirty minute power

monitoring period.• No evidence of physical or electrical deterioration.• The 5 kA (normal-duty) or 10 kA (heavy-duty and riser pole) discharge

voltages measured after each test changed less then 10% from the initial values.

In addition, full IEEE Std C62.11-2005™ standard certification has been completed and verified.

Fault current withstand testsFault current withstand tests demonstrate the ability to withstand fault currents for specific durations without expelling any internal components. All VariSTAR arrester designs have been tested in accordance with the requirements listed in IEEE Std C62.11-2005™ standard, and are non-fragmenting to the levels shown in Table 2.

Table 1. Commonly Applied Voltage Ratings of VariSTAR Arresters

System Voltage (kV rms)

Recommended Arrester Rating per IEEE Std C62.22™ standard (kV rms)

Nominal Maximum

Four-Wire Wye Multi-Grounded Neutral

Three-Wire Wye Solidly Grounded Neutral

Delta and Ungrounded Wye

2.4 2.54 — — 3

4.16Y/2.4 4.4Y/2.54 3 6 6

4.16 4.4 — — 6

4.8 5.08 — — 6

6.9 7.26 — — 9

8.32Y/4.8 8.8Y/5.08 6 9 —

12.0Y/6.93 12.7Y/7.33 9 12 —

12.47Y/7.2 13.2Y/7.62 9 15 —

13.2Y/7.62 13.97Y/8.07 10 15 —

13.8Y/7.97 14.52Y/8.38 10 15 ––

13.8 14.52 — — 18

20.78Y/12.0 22Y/12.7 15 21 —

22.86Y/13.2 24.2Y/13.87 18 24 —

23 24.34 — — 30

24.94Y/14.4 26.4Y/15.24 18 27 —

27.6Y/15.93 29.3Y/16.89 21 30 —

34.5Y/19.92 36.5Y/21.08 27 36 —

46Y/26.6 48.3Y/28 36 — —

Table 2. Fault Current Withstand Tests

Fault Current Amplitude (kA rms)

Fault Current Duration (cycles)

0.6 60

20 12

10.0

1.0

0.1

0.0110 100 1000 10000


IGN

ITIO

N T

IME

(SE

CO

ND

S)

Figure 2. Isolator operating characteristic.

3




Figure 3. VariSTAR arrester with isolator and insulated hanger.

A

B

DIAMETER:HEAVY DUTY = 3.5"NORMAL DUTY = 3.4”RISER POLE = 3.6”

MOUNTING HOLE FOR 1/2" HARDWARE

0.56"

1.75"

Figure 6. VariSTAR arrester with insulated hanger without isolator.

C

B


Figure 4. VariSTAR arrester with isolator, insulated hanger and NEMA® cross-arm bracket.

A

0.56"

2.56"

1.7"

4.12"-5.15"

B

0"-4"

1.75"

Dimensions and clearancesOutline drawings for several common design options are shown in Figures 3-6. Dimensions for these designs are listed in Table 3.

Figure 5. VariSTAR arrester with isolator, insulated hanger and transformer mounting bracket.

GROUND STRAP

LINE TERMINAL

D

A

B

1.75"

Table 3. Insulation Withstand Characteristics of Optional Insulated Mounting Bracket

Insulated Mounting Bracket

Bracket Mounting Length Center-to-Center (in)

Leakage Distance(in)

Strike (in)

Power Frequency Voltage Withstand (60 sec, Wet, kV)

1.2/50 μs Impulse (kV Crest)

Standard For Rating 3-10 kV 4.1 5.9 2.8 36 70

Standard For Rating 12-36 kV 5 8.9 3.9 48 80

4




Table 5. Housing Insulation Withstand Voltages of VariSTAR Arresters

Insulation characteristicsThe insulation characteristics of VariSTAR arrester family are shown in Table 5.

Table 4. Dimensional Data – VariSTAR Arresters


Standard HousingCode (Digits 6 & 7Table 10)

DimensionsFigures 3-6, page 4 (Inches)

Minimum Recommended Clearances* (in.)

Heavy-Duty Normal-Duty

A+ B C+ DPhase-to-Ground

Phase-to-Phase

Phase-to-Ground

Phase-to-Phase

3 3 6.9 4.1 5.5 8.7 3 4.25 2.75 3.75

6 4 7.9 4.1 6.5 8.7 4 5.5 3.75 5

9 5 9.0 4.1 7.6 8.7 5.25 7 5 6.5

10 5 9.0 4.1 7.6 8.7 5.25 7 5 6.5

12 6 10.0 5 8.6 8.7 6 7.75 5.75 7.25

15 7 11.1 5 9.7 8.7 6.75 8.75 6.5 8.25

18 8 12.2 5 10.8 8.7 9.25 11.25 9 10.75

21 9 13.2 5 11.8 8.7 9.25 11.25 9 10.75

24 10 14.3 5 12.9 8.7 10.75 13.25 10.5 12.75

27 11 15.3 5 13.9 14.3 10.75 13.25 10.5 12.75

30 12 16.4 5 15 14.3 10.75 13.25 10.5 12.75

33 13 17.5 5 16.1 14.3 12.75 16.25 12.5 15.75

36 14 18.5 5 17.1 14.3 12.75 16.25 12.5 15.75

ArresterMounting

Configuration

ArresterHousingCodeDigits (6 & 7)

Creep Distance (in.)

Strike(in.)

4.1" 5.0" 4.1" 5.0"

1.2/50 µs Impulse(kV crest)

1 Min. Dry(kV rms)

10 sec.Wet(kV rms)


1 Min. Dry(kV rms)

10 sec.Wet(kV rms)


1 Min. Dry(kV rms)

10 sec.Wet(kV rms)


1 Min. Dry(kV rms)

10 sec.Wet(kV rms)


1 Min. Dry(kV rms)

10 sec.Wet(kV rms)

3 7.2 3.1 78 47 24 92 50 37 70 44 24 85 53 30 70 42 24

4 10.1 4.2 91 56 36 105 55 39 79 52 34 99 56 39 82 51 33

5 13 5.2 104 64 45 117 63 52 89 55 44 109 60 52 90 62 46

6 15.9 6.3 117 78 57 126 86 59 93 61 58 119 80 59 97 72 56

7 18.8 7.3 129 87 68 137 96 71 98 62 59 122 81 63 107 81 69

8 21.7 8.4 140 96 79 148 106 83 104 65 61 126 82 67 118 89 81

9 24.6 9.4 152 105 89 159 116 94 110 68 63 130 83 72 129 98 93

10 27.5 10.5 164 114 100 171 126 105 117 72 67 136 86 78 140 106 105

11 30.4 11.5 176 123 110 183 135 116 125 77 71 142 90 83 152 114 116

12 33.3 12.6 189 131 120 195 144 127 133 82 75 149 94 89 164 122 126

13 36.2 13.6 201 139 130 207 153 137 142 88 81 158 99 96 177 130 136

14 39.1 14.7 215 148 140 220 161 147 152 94 87 167 105 102 190 138 145

15 42 15.8 228 155 150 233 170 157 162 101 93 177 112 109 204 146 153

16 44.9 16.8 242 183 158 246 178 167 173 109 101 187 120 117 218 154 162

17 47.8 17.8 255 171 169 259 185 176 185 117 109 199 128 125 233 161 169

* All clearances are measured from center line of arrester per IEEE Std C62.22™ standard.

+ With optional Wildlife Protector add 0.2 inches.

5




Protective characteristicsVariSTAR distribution-class arresters provide excellent overvoltage protection for electrical equipment throughout distribution systems. The protective characteristics of the VariSTAR arrester family are shown in Tables 6, 7, and 8.

Table 6. Protective Characteristics – VariSTAR Normal-Duty (UNS) Arrester


MCOV (kV rms)

Equivalent Front-of-wave Protective Level* (kV crest)

Maximum Discharge Voltage (kV crest) 8/20 µs Current Wave

1.5 kA 3 kA 5 kA 10 kA 20 kA 40 kA

3 2.55 11 9 9.7 10.4 11.4 13 15.16 5.1 22 18.0 19.4 20.8 22.7 26 30.29 7.65 31.7 26.0 28 30 32.8 37.4 43.510 8.4 33 27.0 29.1 31.2 34.1 38.9 45.312 10.2 41.5 33.9 36.6 39.2 42.9 48.9 56.915 12.7 51.8 42.4 45.7 49 53.6 61.1 71.118 15.3 62.2 50.9 54.9 58.8 64.3 73.4 85.321 17 66 54.0 58.2 62.4 68.2 77.9 90.624 19.5 77 63.0 67.9 72.8 79.6 90.8 10627 22 87.2 71.4 76.9 82.4 90.1 103 12030 24.4 97.1 79.5 85.7 91.8 100 115 13333 27 108 87.8 95.1 102 112 127 14836 29 116 95.3 103 110 120 137 160* Based on 5 kA current impulse that results in a discharge voltage cresting in 0.5 µs.

Table 7. Protective Characteristics – VariSTAR Heavy-Duty (UHS) Arrester


MCOV (kV rms)



1.5 kA 3 kA 5 kA 10 kA 20 kA 40 kA

3 2.55 11 8.2 8.7 9.1 9.9 10.9 12.36 5.1 21.9 16.3 17.4 18.2 19.8 21.9 24.79 7.65 33 24.6 26.1 27.3 29.8 33 37.110 8.4 35 26 27.7 29 31.6 34.9 39.412 10.2 43.9 32.7 34.8 36.4 39.7 43.9 49.515 12.7 53.1 39.6 42.1 44 48 53.1 59.818 15.3 66 49.1 52.3 54.7 59.6 65.9 74.221 17 70 52.1 55.4 58 63.2 69.9 78.724 19.5 80.9 60.2 64.1 67 73.1 80.8 91.127 22 94 70 74.5 77.9 84.9 93.9 10630 24.4 102 76.1 81 84.7 92.4 102 11533 27 116 86.5 92.1 96.3 105 116 13136 29 123 91.5 97.3 102 111 123 138* Based on 10 kA current impulse that results in a discharge voltage cresting in 0.5 µs.

Table 8. Protective Characteristics – VariSTAR Riser Pole (URS) Arrester


MCOV (kV rms)



1.5 kA 3 kA 5 kA 10 kA 20 kA 40 kA

3 2.55 10.3 7.7 8.2 8.6 9.4 10.3 11.76 5.1 20.7 15.5 16.4 17.2 18.7 20.7 23.39 7.65 29.8 22.3 23.7 24.7 27 29.8 33.610 8.4 31 23.2 24.6 25.7 28.1 31 3512 10.2 39.1 29.2 31.1 32.4 35.4 39.1 44.115 12.7 48.7 36.4 38.7 40.4 44.1 48.8 54.918 15.3 58.4 43.7 46.4 48.5 52.9 58.5 65.921 17 62 46.4 49.3 51.5 56.2 62.1 7024 19.5 72.3 54.1 57.5 60 65.5 72.4 81.627 22 81.4 60.9 64.7 67.6 73.8 81.6 91.930 24.4 91 68.1 72.4 75.6 82.5 91.2 10333 27 100 75 79.7 83.3 90.9 100 11336 29 108 80.6 85.6 89.4 97.6 108 122* Based on 10 kA current impulse that results in a discharge voltage cresting in 0.5 µs.

6




Figure 7. Temporary overvoltage curve. No prior duty – 60° C ambient.

1.67

1.60

1.51

1.43

1.35

1.20

1.241.31

1.39

1.47

1.561.65

1.75

1.69

1.27

1.100

1.200

1.300

1.400

1.500

1.600

1.700

1.800

0.01 0.1 1 10 100 1000 10000

Time Duration in Seconds

Volta

ge p

er u

nit M

CO

V

RISER POLE (URS)

NORMAL DUTY (UNS) AND HEAVY DUTY (UHS)

Temporary overvoltage (TOV) capabilityThe ability to withstand 60 Hz overvoltage conditions [Temporary Overvoltage (TOV)] is shown in Figure 7 for all VariSTAR distribution-class arresters. The graph shows for a given voltage magnitude (on a Per Unit of MCOV basis), the time an arrester can survive a TOV condition without going into thermal runaway.

Ordering informationVariSTAR distribution-class arresters, an Eaton's Cooper Power series product, are supplied in a variety of customer defined options. The catalog system employed lets the number define the features of the arrester. Table 9 shows the catalog numbers for several of the most common arrester styles. Table 10 shows what each alpha-numeric character in the catalog number represents and lists several of the available options defined by these characters. A wide variety of option combinations are available, allowing users to customize the arrester to their specific needs. For further options contact your Eaton sales engineer.

Table 9. Catalog Numbers – VariSTAR Distribution-Class Surge Arresters

Arrester Rating

With Isolator and Insulated Hanger (Figure 3)

With Isolator, Insulated Hanger and NEMA Cross-Arm Bracket (Figure 4)

With Insulated Hanger Without Isolator (Figure 6)

With Isolator, Insulated Hanger and Transformer Mounting Bracket (Figure 5)

3 U*S03030A1A1A1A U*S03030A1A1B1A U*S03030A0A1A1A U*S03030A1C1C1C









27 U*S27110A1A1A1A U*S27110A1A1B1A U*S27110A0A1A1A U*S27110A1C1C1A




* Digit 2 Option: N = Normal-Duty, H = Heavy-Duty, R = Riser Pole.

ote:N All catalog numbers listed above include a universal wildlife protector.

7




8 = Line Terminal Wire: 0 = No Line Terminal Wire

1 = 12", #6 AWG Insulated Wire, Stripped 1.25" both ends

4 = 18", #6 AWG Insulated Wire, Stripped 1.25" both ends

7 = 30", #6 AWG Insulated Wire,Stripped 1.25" both ends

2 = 12", #6 AWG Insulated Wire, 1 ring terminal /1 end stripped 1.25"



3 = 12", #6 AWG Insulated Wire, 2 ring terminals

6 = 18", #6 AWG Insulated Wire,2 ring terminals

9 = 30", #6 AWG Insulated Wire, 2 ring terminals

Table 10. VariSTAR Distribution-Class Arrester UltraQUIK™ Catalog Numbering System

Catalog Number Digits

1 = UltraSIL Polymer-Housed Arrester, U

2 = Arrester Class: N = Normal-Duty H = Heavy-Duty R = Riser Pole

3 = Arrester Type: S = VariSTAR

4 & 5 = Arrester Rating (MCOV): 03 = 3 kV (2.55 kV) 06 = 6 kV (5.1 kV)09 = 9 kV (7.65 kV) 10 = 10 kV (8.4 kV)

12 = 12 kV (10.2 kV) 15 = 15 kV (12.7 kV)18 = 18 kV (15.3 kV)

21 = 21 kV (17.0 kV)24 = 24 kV (19.5 kV)27 = 27 kV (22.0 kV)

30 = 30 kV (24.4 kV)33 = 33 kV (27.0 kV)36 = 36 kV (29.0 kV)

9 = Line Terminal Options

A = Silicon Bronze Nut, Stainless Steel Wire Clamp and Universal Wildlife Protector

B = Silicon Bronze Nut and Stainless Steel Wire Clamp

C = No Hardware D = Silicon Bronze Nut, Lock Washer, Flat Washer and Universal Wildlife Protector (For leads with ring terminals)

X = Silicon Bronze Nut, Stainless Steel Wire Clamp and Line Terminal Wildlife Guard. Reference Figure 8 for dimensional information.

Digits 6 & 7 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17

Leakage Distance

(in.)Arrester Rating (kV rms) 7.2 10.1 13.0 15.9 18.8 21.7 24.6 27.5 30.4 33.3 36.2 39.1 42.0 44.9 47.8

3 « O6 « O O9 « O O O10 « O O O12 « O O O O15 « O O O O18 « O O O O21 « O O O O24 « O O O O27 « O O O O30 « O O O O33 « O O O O36 « O O O

6 & 7 = Housing Code per Arrester Rating (Select from Table below):« = Standard Creepage Housing O = Optional Creepage Housings

1

U2 3

S4 5 6 7 8 9 10 11 12 13 14

115

8




10 = Isolator, with 3/8" stainless steel grounding stud

0 = No Isolator 2 = Red Isolator 4 = Blue Isolator 6 = Orange Isolator

1 = Black Isolator (Standard) 3 = Yellow Isolator 5 = White Isolator


A = Wire Clamp with Silicon Bronze Nut (Shown with optional Isolator and Insulated Hanger)

B = No Hardware (Shown with optional Isolator and Insulated Hanger)

C = Copper Transformer Grounding Strap with Stainless Steel Lock Washer & Silicone Bronze Nut (Shown with optional Isolator and Insulated Hanger)

D = Stainless Steel Washer, Lock Washer, Silicone Bronze Nut

13 = Mounting Bracket Options

A = Without an Additional Mounting Bracket

B = NEMA Cross-Arm Bracket (Arrester Mounting Hardware Included) (Requires “1” or “2” in Digit 12) Refer to Figure 11 for dimensional information

C = Transformer Bracket(Arrester Mounting Hardware Included)(Requires “1” or “2” in Digit 12)(Reference Figures 12 & 13 for bracket dimensions by rating)

D = Option C Plus Transformer Mounting Hardware(2 each — 1/2", 13-UNC x 3/4" Bolts, Flat Washers, and Lock Washers)(Requires “1” or “2” in Digit 12)(Reference Figures 12 & 13 for bracket dimensions by rating)

12 = Base Configuration Options

0 = Insulated Base(Base Mounted Arrester)(Requires "0" in Digit 10)

1 = Insulated Hanger (Required with optional isolator)(Available only if Digits 6 & 7 are Housing Options 15 or less*)* For more information, contact your Eaton representative.

2 = Insulated Base With Conductive Mounting Strap(Requires "0" in Digit 10 and “D” in Digit 11)

Table 10. VariSTAR Distribution-Class Arrester UltraQUIK™ Catalog Numbering System (continued)

1

U2 3

S4 5 6 7 8 9 10 11 12 13 14

115

9




14 = Nameplate Information: 1 = IEEE Std C62.11-2005™ standard Required Data

15 = Packaging: A = Individual Carton (Assembled Terminal Hardware). Each arrester is shipped in an individual high strength cardboard carton. The top and bottom terminal hardware is assembled to the arrester. Any optional brackets or hardware are provided unassembled.

C = Bulk Packed (Assembled Terminal Hardware). Pallet sized bulk cardboard packaging for transformer mounting bracket options (Digits 13 = C or D only). Each arrester is shipped fully assembled including transformer mounting bracket. Available for 3-24 kV arresters only. Full pallet quantities only: 3-10 kV = 90, 12-18 kV = 72, 21-24 kV = 40.

3 = International, Individual Carton (Assembled Terminal Hardware). Each arrester with accessories is shipped in an individual cardboard carton. The top and bottom terminal hardware is assembled to the arrester. Individual cartons are packed within a heavy duty quadwall carton having a skid bottom and suitable for double stacking within an ocean shipping container.

Table 10. VariSTAR Distribution-Class Arrester UltraQUIK™ Catalog Numbering System (continued)

1

U2 3

S4 5 6 7 8 9 10 11 12 13 14

115



E9 = Ground Terminal Wildlife Guard, Insulated Hanger (Shown with optional isolator), transformer bracket. Reference Figures 11 - 13 for dimensions including brackets by rating.

10




Figure 8. Universal wildlife protector (catalog number AV346X1C). (All dimensions in inches).

The universal wildlife protector has two self-adjusting "valve" style openings which vary from 0 to 0.75" in diameter, thus allowing for a large variety of conductor/insulation sizes while providing optimum wildlife protection.

Available accessories for the VariSTAR arrester

0.80"

2.50"

1.03"

2.22"

VALVEOPENING

VALVEOPENING

VALVEOPENING

SIDE VIEW TOP VIEW

152

Figure 9. Line terminal wildlife guard (catalog number AV698X1C). (All dimensions in inches.)

Figure 10. Ground terminal wildlife guard (catalog number AV731X1C). (All dimensions in inches.) Left shows attachment of ground terminal wildlife guard, right images shows ground terminal wildlife guard completely installed.

11




Figure 11. NEMA® cross-arm bracket (catalog number AM35A1). Can be specified with a "B" in digit 13. (All dimensions in inches.)

Figure 12. Standard transformer mounting bracket for 3-24 kV arrester (part number AM36A2). Can be specified with a “C” in Digit 13. (All dimensions in inches.)

2.38"

.25"

.75"

1"

8.70"

5.70"

1.63"

2.25"

50

2.5"

2.25"

1.25"

Figure 13. Standard transformer mounting bracket for 27-36 kV arrester (part number AH46A2). Can be specified with a “C” in Digit 13. (All dimensions in inches.)

3.00”.75”

45°

14.25”

12.55”

2.13”

2.13”

2.13”

2.13”

.56”

3.40”

2.50”

3.38”

1.86”

1.50”

Figure 14. Optional transformer mounting bracket (catalog number AM36A3). Can be specified with an “N” in Digit 13. (All dimensions in inches.)

2.38"

1"

12.25"

7"

1.63"

2.5"

40

0.5"

.56 x 2.25"MTG. SLOTS(2 REQ'D)

1.25"

ZEROTo

4.00

4.12 To

5.15

6.75

2.56

4.50

.344

1.25

.438SQUARE

.438 SQUAREHOLE

.5001.50

3/8" HARDWARE

1/2" HARDWARE

12




Figure 15. Optional transformer mounting bracket (catalog number AM36A1). Can be specified with an “S” in Digit 13. (All dimensions in inches.)

2.38"

1"

11"

7"

1.63"

2.5"

40

0.5"


1.5"

114

11 SQUARE

11 SQUAREHOLE

13

13

8

170

9

114

(2) 13 mm O

13

8

32

32

170

13

Figure 16. Conductive base mounting for use with 3/8" hardware. Can be specified with a "2" in digit 12. (Requires "0" in digit 10, "D" in digit 11). (All dimensions in inches.)

13




GeneralEaton set the standard for design, manufacturing and delivery of polymeric distribution arresters with its Cooper Power™ series UltraSIL™ polymer-housed arrester family. The UltraSIL polymer-housed Evolution™ surge arrester from Eaton's Cooper Power series product-line incorporates the industry recognized superior polymer-housing material – silicone rubber.

The Evolution surge arrester uses specially formulated and highly durable Metal Oxide Varistors (MOVs) in combination with a proprietary insulating ceramic ring assembly. The mating of these two proven technologies allows Eaton to offer a distribution class arrester with riser-pole protective characteristics and infinite TOV capability. The Evolution surge arrester offers significant improvements in protective characteristics and 60 Hz temporary over voltage (TOV) capability for all common over-head and riser-pole applications.

ConstructionThe patented construction of the Evolution surge arrester comprises the arrester module assembly encapsulated in a high-strength composite matrix insulating material. The components of the arrester module assembly consist of Metal Oxide Varistors (MOVs) in series with a proprietary insulating ceramic ring assembly. The insulating ceramic ring assembly withstands system voltage during steady state conditions and reduces electrical stress across the MOV disks.

The components of the arrester module assembly are encapsulated on our fully automated assembly line using strict quality control processes. The composite matrix is cured to the arrester module assembly to form a solid insulation system, which is then inserted and bonded to the industry leading track resistant UltraSIL polymer-housing material.

The composite-bonded module assembly provides a secondary moisture seal underneath the primary seal of the UltraSIL polymer-housing material. The combinations of these technologies allow the Evolution surge arrester to be impervious to moisture and capable of withstanding extreme electrical, environmental and cantilever load conditions. The composite wrapped module assembly used in the Evolution surge arrester represents a quantum leap in polymer arrester technology.

Following assembly, each arrester is subjected to a battery of electrical tests to assure the highest quality and in-service field performance.

UltraSIL™ Polymer-Housed Evolution™ (10 kA) IEEE® Surge Arresters for MV Systems to 36 kV

Surge ArresterCatalog Data CA235018EN

Effective May 2017 Supersedes January 2017

COOPER POWERSERIES

FeaturesThe Evolution surge arrester exceeds protective levels offered by standard metal oxide varistor arresters and helps compensate for two variables related to installation practices and equipment protection:

Excessive Lead Length

Aged Equipment Insulation

UltraSIL polymer-housing material has undergone a wide range of design tests to determine the optimum shed configuration. In addition, long term environmental testing has verified the lifetime superiority of silicone rubber when compared to other polymeric insulating materials.

Independent laboratory tests have verified the superiority of polymer-housing material in terms of non-wetting surfaces, resistance to UV degradation and surface tracking, performance in contaminated

environments, chemical inertness, temperature stability and other important insulating properties. UltraSIL polymer-housing material will not support biological growth (algae and mildew), is non-flammable and will not support combustion.

An optional insulated mounting hanger is available to allow connecting to a wide variety of brackets. The insulated hanger, made of glass-filled polyester, has been designed to provide needed mechanical strength for installation and severe loading conditions.

A ground lead isolator is also available. The isolator removes the ground terminal from the arrester in the unlikely event of arrester failure, thus preventing a permanent system fault. An isolator that has operated gives visual indication of internal damage to the arrester and the need for arrester replacement. See Figure 2 for the isolator operating characteristics.

An optional universal wildlife protector has two self-adjusting "valve" style openings which vary from 0 to 0.75" in diameter, thus allowing for a large variety of conductor/insulation sizes while providing optimum wildlife protection. (See page 12, Figure 8 for a dimensional diagram.)

Customers looking to improve system reliability by minimizing wildlife related outages now have multiple options. In addition to the universal wildlife protector, Eaton's Cooper Power series also offers the more robust line terminal wildlife guard. The line terminal wildlife guard is easily retrofitted to existing arrester installations and provides increased electrical insulation for the high voltage terminal of the arrester. The flexible design of the line terminal wildlife guard allows insertion of the lead wire through the bottom of the integral molded flanges. The access holes molded above the flanges will allow conductor sizes ranging from 0 to 0.50" in diameter (OD). The line terminal wildlife guard's geometry allows water to shed away from the surface area of the animal guard while minimizing ice buildup and maintaining flexibility through extreme operating temperatures. See Figure 9 for a dimensional diagram.

For complete wildlife resistance, the ground terminal wildlife guard can easily be installed alongside the line terminal wildlife guard or universal wildlife protector. The ground terminal wildlife guard is a compact and economical guard that ensures wildlife is unable to come in contact with energized objects while on a

grounded surface. See Figure 10 for a dimensional diagram.

OperationThe operation of Evolution surge arresters differs from conventional metal oxide arresters. During steady-state conditions, the insulating ceramic ring assembly withstands system voltage while reducing electrical stress on the MOV disks. When surges occur, the insulating ceramic ring assembly sparks over, leaving only the MOV disks in the circuit. The result is much lower discharge voltages as compared to standard heavy duty and riser pole metal oxide arresters. The added insulating ceramic ring assembly extends TOV capability for levels up to 1.78 P/U forever. Improving the Evolution surge arrester's resistance to overvoltage conditions reduces system maintenance related to arresters and helps improve system reliability.

Figure 1. Cutaway illustration of the Evolution Distribution Surge Arrester.

STAINLESS STEEL TOPCAP

NAMEPLATEINFORMATION

ALUMINUM LINE ELECTRODE

INSULATING CERAMIC RING ASSEMBLY

BONDED SOLID INTERFACE

UltraSIL POLYMER-HOUSING MATERIAL

METAL OXIDE VARISTOR

FIBERGLASS REINFORCED EPOXY COMPOSITE

OPTIONAL INSULATING HANGER

LINE TERMINAL3/8 INCH STAINLESS STEEL STUD

ALUMINUM GROUND ELECTRODE

OPTIONAL GROUND LEAD DISCONNECT KV RATING

LABEL(Visible from ground)

GROUND TERMINAL3/8 INCH STAINLESS STEEL STUD

INSULATING CERAMIC RING ASSEMBLY

METAL OXIDE VARISTOR

2


UltraSIL Polymer-Housed Evolution Surge Arresters


Design testingThe housing material, internals and hardware work together as a system and must stand up to years of exposure to environmental extremes. To assure a superior level of performance, both the components and assembled arrester units have been subjected to a program of testing that accurately simulates years of exposure to actual field conditions. Testing includes:

IEEE Std C62.11™ standard testing – Full certification to performance requirements by an independent laboratory. Reference CP0804, UltraSIL Polymer-Housed Evolution Surge Arrester Certified Test Report for details. Additional reference documents are listed on page 14.

To demonstrate the resistance of a composite wrapped module to moisture ingress Eaton performed the Water Immersion Test on the Evolution surge arrester without the polymer-housing material. This test was completed in accordance with IEEE Std C62.11™-2005 standard, Section 8.22, and IEC 60099-4, Ed 2 2004. The arrester sample passed the test by demonstrating less than 5% change in residual voltage, less than 20% change in power loss, less than 10pC of internal partial discharge with no signs of physical damage. A test report is available upon request.

Production testsA complete production test program ensures a quality product. Each metal oxide varistor receives a series of electrical tests. Quality is demonstrated by a series of destructive tests performed on every batch of varistors. Listed are the production tests performed on the varistors:• 100% Physical Inspection• 100% Discharge Voltage test• 100% V1mA/cm2

• 100% Leakage Current at 80% of V1mA/cm2 Voltage• Batch High-current, Short-duration test• Batch Thermal Stability test• Batch Aging test

Each fully assembled arrester must pass the following production tests:• 100% Physical Inspection• 100% Partial Discharge Inception Voltage test• 100% 60 Hz Sparkover Level test

Table 1. Commonly Applied Voltage Ratings of Evolution Surge Arresters


Recommended Arrester Rating per IEEE Std C62.22™ standard(kV rms)

Nominal Maximum

Four-Wire Wye Multi-Grounded Neutral

Three-Wire Wye Solidly Grounded Neutral Delta and Ungrounded Wye

Standard MOV Arrester URT

Standard MOV Arrester *URT

Standard MOV Arrester *URT

2.4 2.54 — — — — 3 3

4.16Y/2.4 4.4Y/2.54 3 3 6 3 6 3

4.16 4.4 — — — — 6 3

4.8 5.08 — — — — 6 6

6.9 7.26 — — — — 9 6

8.32Y/4.8 8.8Y/5.08 6 6 9 6 — —

12.0Y/6.93 12.7Y/7.33 9 9 12 9/10 — —

12.47Y/7.2 13.2Y/7.62 9 9 15 9/10 — —

13.2Y/7.62 13.97Y/8.07 10 10 15 10 — —

13.8Y/7.97 14.52Y/8.38 10 10 15 10 –– —

13.8 14.52 — — — — 18 10

20.78Y/12.0 22Y/12.7 15 15 21 15 — —

22.86Y/13.2 24.2Y/13.87 18 18 24 18 — —

23 24.34 — — — — 30 18

24.94Y/14.4 26.4Y/15.24 18 18 27 18 — —

27.6Y/15.93 29.3Y/16.89 21 21 30 21 — —

34.5Y/19.92 36.5Y/21.08 27 27 36 27 — 27

46Y/26.6 48.3Y/28 36 36 — — — —* Recommended arrester ratings for the Evolution arrester for 3-Wire Solidly Grounded Neutral, Delta and Ungrounded Wye circuits are based upon 5% regulation error.

3




General application recommendationsThe rating of an arrester is the maximum power frequency line-to-ground voltage at which the arrester is designed to pass an operating duty-cycle test. Table 1 provides a general application guide for the selection of the proper arrester rating for a given system voltage and system grounding configuration as outlined in the IEEE Std C62.22™ standard application guide.

Under fault conditions and other system anomalies, higher voltages can be experienced by the arrester. To ensure that the arrester ratings will not be exceeded, Eaton application engineers are available to make recommendations. The following information is normally required:





Consult your Eaton representative to have your individual system application needs studied.

Performance test characteristicsEvolution distribution class surge arresters withstand the following design tests as described by IEEE Std C62.11™ standard:• Duty Cycle:

22 current surges of 10 kA crest, 8/20 µs waveshape.• High-Current, Short-Duration Discharge:

2 current surges of 100 kA crest, 4/10 µs waveshape.• Low-Current, Long-Duration Discharge:

20 current surges of 250 A crest 2000 µs duration rectangular wave.


monitoring period.• No evidence of physical or electrical deterioration.• The 10 kA discharge voltages measured after each test changed

less then 10% from the initial values.

In addition, full IEEE Std C62.11™ standard certification has been completed and verified.

Fault current withstand testsFault current withstand tests demonstrate the ability to withstand fault currents for specific durations without expelling any internal components. All Evolution distribution class surge arrester designs have been tested in accordance with the requirements listed in IEEE Std C62.11™ standard, and are non-fragmenting to the levels shown in Table 2.

Table 2. Fault Current Withstand Tests

Fault Current Amplitude(kA rms)

Fault Current Duration(cycles)

0.6 60

20.0 12

10.0

1.0

0.1

0.0110 100 1000 10000


IGN

ITIO

N T

IME

(SE

CO

ND

S)

Figure 2. Isolator operating characteristic.

4




Dimensions and clearancesOutline drawings for several common design options are shown in Figures 3-6. Dimensions for these designs are listed in Table 3.

Figure 3. Evolution surge arrester with isolator and insulated hanger.

A

B

DIAMETER= 3.45”


0.56"

1.75"

Figure 4. Evolution surge arrester with isolator, insulated hanger and NEMA® cross-arm bracket.

A

0.56"

2.56"

1.7"

4.12"-5.15"

B

0"-4"

1.75"

Table 3. Insulation Withstand Characteristics of Optional Insulated Mounting Bracket

Insulated Mounting Bracket

Bracket Mounting Length Center-to-Center (in)

Leakage Distance(in)

Strike (in)

Power Frequency Voltage Withstand (60 sec, Wet, kV)

1.2/50 μs Impulse (kV Crest)

Standard For Rating 3-10 kV 4.1 5.9 2.8 36 70

Standard For Rating 12-36 kV 5 8.9 3.9 48 80

5




Figure 5. Evolution surge arrester with isolator, insulated hanger and transformer mounting bracket.

GROUND STRAP

LINE TERMINAL

D

A

B

Figure 6. Evolution surge arrester without isolator including insulated hanger and NEMA® cross-arm bracket.

C

B


* All clearances are measured from center line of arrester per IEEE Std C62.22™ standard.

+ With optional Wildlife Protector add 0.2 inches.

Table 4. Dimensional Data – Evolution Surge Arresters

ArresterRating(kV rms)

StandardHousingCode(Digits 6 & 7, Table 8)

DimensionsFigures 3-6(Inches)

Minimum Recommended Clearances* (in.)

Heavy Duty

A+ B C+ DPhase-to-Ground

Phase-to-Phase

3 04 7.9 4.1 6.5 8.7 3.00 4.256 05 9.0 4.1 7.6 8.7 4.00 5.509 05 9.0 4.1 7.6 8.7 5.25 7.0010 05 9.0 4.1 7.6 8.7 5.25 7.0012 07 11.1 5.0 9.7 8.7 6.00 7.7515 07 11.1 5.0 9.7 8.7 6.75 8.7518 08 12.2 5.0 10.8 8.7 9.25 11.2521 09 13.2 5.0 11.8 8.7 9.25 11.2524 10 14.3 5.0 12.9 8.7 10.75 13.2527 11 15.3 5.0 13.9 14.3 10.75 13.2530 12 16.4 5.0 15.0 14.3 10.75 13.2533 13 17.5 5.0 16.1 14.3 12.75 16.2536 14 18.5 5.0 17.1 14.3 12.75 16.25

1.75"

6




Insulation characteristicsThe insulation characteristics of the Evolution surge arrester family are shown in Table 5.

Protective characteristicsEvolution distribution class surge arresters provide excellent overvoltage protection for electrical equipment throughout distribution systems. The protective characteristics of the Evolution surge arrester are shown in Table 6.

Table 5. Housing Insulation Withstand Voltages of Evolution Surge ArrestersArrester

Mounting Configuration

ArresterHousingCode (Digits 6 & 7)

Creep Distance

(in.)Strike(in.)

1.2/50 µsImpulse(kV crest)

1 min. Dry(kV rms)

10 sec.Wet(kV rms)


1 min. Dry(kV rms)

10 sec.Wet(kV rms)


1 min. Dry(kV rms)

10 sec.Wet(kV rms)


1 min. Dry(kV rms)

10 sec.Wet(kV rms)


1 min. Dry(kV rms)

10 sec.Wet(kV rms)

04 10.1 4.2 91 56 36 105 55 39 79 52 34 99 56 39 82 51 3305 13.0 5.2 104 64 45 117 63 52 89 55 44 109 60 52 90 62 4606 15.9 6.3 117 78 57 126 86 59 93 61 58 119 80 59 97 72 5607 18.8 7.3 129 87 68 137 96 71 98 62 59 122 81 63 107 81 6908 21.7 8.4 140 96 79 148 106 83 104 65 61 126 82 67 118 89 8109 24.6 9.4 152 105 89 159 116 94 110 68 63 130 83 72 129 98 9310 27.5 10.5 164 114 100 171 126 105 117 72 67 136 86 78 140 106 10511 30.4 11.5 176 123 110 183 135 116 125 77 71 142 90 83 152 114 11612 33.3 12.6 189 131 120 195 144 127 133 82 75 149 94 89 164 122 12613 36.2 13.6 201 139 130 207 153 137 142 88 81 158 99 96 177 130 13614 39.1 14.7 215 148 140 220 161 147 152 94 87 167 105 102 190 138 14515 42.0 15.8 228 155 150 233 170 157 162 101 93 177 112 109 204 146 15316 44.9 16.8 242 183 158 246 178 167 173 109 101 187 120 117 218 154 16217 47.8 17.8 255 171 169 259 185 176 185 117 109 199 128 125 233 161 169

4.1" 5.0"4.1" 5.0"

* The Front-of-Wave Protective Level is the larger of the Front-of-Wave Sparkover Voltage (FOW) or Equivalent Front-of-Wave Discharge Voltage (EFOW) per IEEE Std. C62.11-2005 standard. The Front-of-Wave Sparkover Level is based on a voltage waveform having a rate of rise of 100 kV/µs for each 12 kV of arrester duty cycle rating. The EFOW is a discharge voltage resulting from a 10 kA current impulse cresting in 0.5µs. The Front-of-Wave Protective Level for the Evolution arrester is the FOW Sparkover Level.

** The 3rd Party test report CP1012 is available on www.eaton.com/cooperpowerseries website and includes test data for standard production 10 kV, 18 kV & 27 kV arresters.

Table 6. Protective Characteristics – Evolution Surge Arrester Heavy Duty (URT)


MCOV (kV rms)

Minimum 60 Hz Sparkover (kV crest/ √2)

Front-of-wave Protective Level* (kV crest)

3rd Party Front-of-Wave Protective Level** (kV crest)

Maximum Discharge Voltage (kV crest)8/20 µs Current Wave

Switching Surge kV Crest)

1.5 kA 3 kA 5 kA 10 kA 20 kA 40 kA 500 A3 2.55 4.54 20.0 — 8.1 8.7 9.3 10.2 11.6 13.5 7.66 5.10 9.08 23.0 — 16.1 17.4 18.6 20.3 23.3 27.0 15.29 7.65 13.6 32.4 — 18.9 20.3 21.8 23.8 27.3 31.6 17.810 8.40 15.0 32.4 24.3 20.1 21.6 23.2 25.4 29.0 33.7 19.012 10.2 18.2 52.4 — 25.2 27.2 29.1 31.8 36.4 42.2 23.815 12.7 22.6 55.4 — 30.5 32.8 35.2 38.5 44.0 51.1 28.818 15.3 27.2 64.8 51.1 37.8 40.8 43.7 47.8 54.6 63.4 35.721 17.0 30.3 64.8 — 40.1 43.2 46.3 50.6 57.9 67.2 37.824 19.5 34.7 87.8 — 46.4 50.0 53.6 58.6 67.0 78 43.827 22.0 39.2 97.2 66.9 53.9 58.0 62.2 68.0 78 90 50.830 24.4 43.4 117.2 — 58.6 63.2 67.7 74 85 98 55.333 27.0 48.1 120.2 — 66.6 71.7 77 84 96 112 62.836 29.0 51.6 129.6 — 70.4 76 81 89 102 118 66.4

7




Ordering informationEvolution surge arresters can be ordered in a variety of customer defined options. Table 7 below lists standard part numbers for our most common design options (see illustrations on pages 5-6, Figures 3-6). For other design options, use Table 8 to customize the arrester to specific needs. For further options contact your Eaton sales engineer.

Temporary overvoltage (TOV) capabilityThe ability to withstand 60 Hz overvoltage conditions [Temporary Overvoltage (TOV)] is shown in Figure 7 for all Evolution distribution-class surge arresters. The graph shows for a given voltage magnitude (on a Per Unit of MCOV basis) the time an arrester can survive a TOV condition without going into thermal runaway.

UltraSIL Housed EVOLUTION Arrester TOV Curve Per ANSI C62.11

1.7801.7801.7801.7801.7801.7801.7801.780

1.000

1.100

1.200

1.300

1.400

1.500

1.600

1.700

1.800

1.900

2.000

0.01 0.1 1 10 100 1000 10000 100000


Volta

ge (p

er u

nit o

f MCO

V)

Table 7. Catalog Numbers-Evolution Distribution Class Surge Arresters


With Isolator andInsulated Hanger(Figure 3)

With Isolator,Insulated Hangerand NEMACross-Arm Bracket(Figure 4)

With Isolator,Insulated Hangerand TransformerMounting Bracket(Figure 5)

With Insulating Hanger Without Isolator (Figure 6)

3 URT03040A1A1A1A URT03040A1A1B1A URT03040A1C1C1C URT03040A0A1A1A













ote:N Digits 2 & 3 Options "RT" replaces Normal-Duty, Heavy-Duty & Riser-Pole.

ote:N All catalog numbers listed above include a universal wildlife protector; catalog number AV346X1.


8




Table 8. UltraSIL Polymer-Housed Evolution Distribution-Class Surge Arrester UltraQUIK Catalog Numbering System

A = Silicon Bronze Nut, Stainless Steel Wire Clamp & Universal Wildlife Protector. Reference Figure 8 for dimensional information.

B = Silicon Bronze Nut & Stainless Steel Wire Clamp

C = No Hardware

D = Silicon Bronze Nut, Lock Washer, Flat Washer & Universal Wildlife Protector (For leads with ring terminals) Reference Figure 7 for dimensional information.

K = Silicon Bronze Nut, Stainless Steel Wire Clamp

X = Silicon Bronze Nut, Stainless Steel Wire Clamp and line terminal wildlife guard. Reference Figure 9 for dimensional information.

Catalog Number Digits:

1 = UltraSIL Polymer-Housed Arrester: U 2 & 3 = Arrester Class: RT = Evolution 4 & 5 = Arrester Rating (MCOV): 03 = 3 kV (2.55 kV) 12 = 12 kV (10.2 kV) 21 = 21 kV (17.0 kV) 30 = 30 kV (24.4 kV) 06 = 6 kV (5.1 kV) 15 = 15 kV (12.7 kV) 24 = 24 kV (19.5 kV) 33 = 33 kV (27.0 kV) 09 = 9 kV (7.65 kV) 18 = 18 kV (15.3 kV) 27 = 27 kV (22.0 kV) 36 = 36 kV (29.0 kV) 10 = 10 kV (8.4 kV)

6 & 7 = Housing Code per Arrester Rating: Select from Table below. = Standard Creepage Housing O = Optional Creepage Housings

8 = Line Terminal Wire: 0 = No Line Terminal Wire 1 = 12", #6 AWG Insulated Wire, 4 = 18", #6 AWG Insulated Wire, 7 = 30", #6 AWG Insulated Wire, Stripped 1.25" both ends Stripped 1.25" both ends Stripped 1.25" both ends

2 = 12", #6 AWG Insulated Wire, 5 = 18", #6 AWG Insulated Wire, 8 = 30", #6 AWG Insulated Wire, 1 ring terminal /1 end stripped 1.25" 1 ring terminal /1 end stripped 1.25" 1 ring terminal /1 end stripped 1.25"

3 = 12", #6 AWG Insulated Wire, 6 = 18", #6 AWG Insulated Wire, 9 = 30", #6 AWG Insulated Wire, 2 ring terminals 2 ring terminals 2 ring terminals

9 = Line Terminal Options

Digits 6 & 7 04 05 06 07 08 09 10 11 12 13 14 15 16 17

Leakage Distance

(in.)

10.1 13.0 15.9 18.8 21.7 24.6 27.5 30.4 33.3 36.2 39.1 42.0 44.9 47.8


3

6 O

9 O O O

10 O O O

12 O O O

15 O O O O

18 O O O O

21 O O O O O

24 O O O O

27 O O O O

30 O O O O

33 O O O O

36 O O O

1 2 3 4 5 6 7

U R T 8 9 1110 1312 1514

9




10 = Isolator, with 3/8" stainless steel grounding stud 0 = No Isolator 2 = Red Isolator 4 = Blue Isolator 6 = Orange Isolator 1 = Black Isolator (Standard) 3 = Yellow Isolator 5 = White Isolator


12 = Base Configuration Options

13 = Mounting Bracket Options

A = Stainless Steel Wire Clamp with Silicon Bronze Nut (Shown with optional Isolator and Insulated Hanger)

B = No Hardware (Shown with optional Isolator and Insulated Hanger)

C = Copper Transformer Grounding Strap with Stainless Steel Lock Washer & Silicon Bronze Nut (Shown with optional Isolator and Insulated Hanger)

D = Stainless Steel Washer, Lock Washer, Silicon Bronze Nut

0 = Insulated Base (Base Mounted Arrester) 1 = Insulated Hanger (Required with optional

isolator)(Available only if Digits 6 & 7 are Housing Options 15 or less*)* For more information, contact your Eaton representative.

2 = Insulated Base With Conductive Mounting Strap (Requires "D" in Digit 11)

A = Without an Additional Mounting Bracket

B = NEMA® Cross-Arm Bracket (Arrester Mounting Hardware Included) (Requires "1" or "2" in Digit 12)(Refer to Figure 11 for dimensional information.)

C = Transformer Bracket (Arrester Mounting Hardware Included) (Requires "1" or "2" in Digit 12)(Refer to Figures 12 and 13 for dimensions by rating.)

D = Option C plus Transformer Mounting Hardware (2 each – 1/2", 13-UNC x 3/4" Bolts, Flat Washers, and Lock Washers) (Requires "1" or "2" in Digit 12)(Refer to Figures 12 and 13 for dimensions by rating.)

Table 8. UltraSIL Polymer-Housed Evolution Distribution-Class Surge Arrester UltraQUIK Catalog Numbering System (continued)

1 2 3 4 5 6 7

U R T 8 9 1110 1312 1514

10




14 = Nameplate Information: 1 = IEEE Std C62.11™ standard Required Data

15 = Packaging: A = Individual Carton (Assembled Terminal Hardware). Each arrester is shipped in an individual high strength cardboard carton. The top and bottom terminal hardware is assembled to the arrester. Any optional brackets or hardware are provided unassembled.

C = Bulk Packed (Assembled Terminal Hardware). Pallet sized bulk cardboard packaging for transformer mounting bracket options (Digits 13 = C or D only). Each arrester is shipped fully assembled including transformer mounting bracket. Available for 3-24 kV arresters only. Full pallet quantities only: 3-10 kV = 90, 12-18 kV = 72, 21-24 kV = 40.

3 = International, Individual Carton (Assembled Terminal Hardware). Each arrester with accessories is shipped in an individual cardboard carton. The top and bottom terminal hardware is assembled to the arrester. Individual cartons are packed within a heavy duty quadwall carton having a skid bottom and suitable for double stacking within an ocean shipping container.

Table 8. UltraSIL Polymer-Housed Evolution Distribution-Class Surge Arrester UltraQUIK Catalog Numbering System (continued)

1 2 3 4 5 6 7

U R T 8 9 1110 1312 1514



E9 = Ground Terminal Wildlife Guard, Insulated Hanger (Shown with optional isolator), transformer bracket. Reference Figures 10, 12, and 13 for dimensional information.

11




Available accessories for the Evolution surge arrester

Figure 8. Universal wildlife protector (catalog number AV346X1C).

The optional universal wildlife protector has two self-adjusting "valve" style openings which vary from 0 to 0.75" in diameter, thus allowing for a large variety of conductor/insulation sizes while providing optimum wildlife protection.

0.80"

2.50"

1.03"

2.22"

VALVEOPENING

VALVEOPENING

VALVEOPENING

SIDE VIEW TOP VIEW

152

Figure 9. Line terminal wildlife guard (catalog number AV698X1C). (All dimensions in inches.)

7.82

2.938

2.08

1.951.65

ø .475

ø 3.78

Figure 10. Ground terminal wildlife guard (catalog number AV731X1C). (All dimensions in inches.) Left shows attachment of ground terminal wildlife guard, right images shows ground terminal wildlife guard completely installed.

12




Figure 11. NEMA® cross-arm bracket (catalog number AM35A1). Can be specified with a "B" in digit 13. (All dimensions in inches.)

2.38"

.25"

.75"

1"

8.70"

5.70"

1.63"

2.25"

50

2.5"

2.25"

1.25"

Figure 12. Standard transformer mounting bracket for 3-24 kV arrester (catalog number AM36A2). Can be specified with a “C” in Digit 13. (All dimensions in inches.)

Figure 13. Standard transformer mounting bracket for 27-36 kV arrester (catalog number AH46A2). Can be specified with a “C” in Digit 13. (All dimensions in inches.)

3.00”.75”

45°

14.25”

12.55”

2.13”

2.13”

2.13”

2.13”

.56”

3.40”

2.50”

3.38”

1.86”

1.50”ZERO

To4.00

4.12 To

5.15

6.75

2.56

4.50

.344

1.25

.438SQUARE

.438 SQUAREHOLE

.5001.50

3/8" HARDWARE

1/2" HARDWARE

2.38"

1"

12.25"

7"

1.63"

2.5"

40

0.5"


1.25"

Figure 14. Optional transformer mounting bracket (catalog number AM36A3). Can be specified with an “N” in Digit 13. (All dimensions in inches.)

13




Figure 15. Optional transformer mounting bracket (catalog number AM36A1). Can be specified with an “S” in Digit 13. (All dimensions in inches.)

2.38"

1"

11"

7"

1.63"

2.5"

40

0.5"


1.5"

114

11 SQUARE

11 SQUAREHOLE

13

13

8

170

9

114

(2) 13 mm O

13

8

32

32

170

13

Figure 16. Conductive base mounting for use with 3/8" hardware. Can be specified with a "2" in digit 12. (Requires "0" in digit 10, "D" in digit 11.) (All dimensions in inches.)

Additional information• MN235006EN, UltraSIL Housed Distribution-Class MOV Arrester

Installation Instructions• B235-08033, Taking Protection to the Extremes, The Evolution

Surge Arrester• B235-08022, Superior Protection for Arresters and Wildlife• CP0804, UltraSIL Polymer-Housed Evolution Surge Arrester

Certified Test Report• CP1012, UltraSIL Polymer-Housed Evolution Surge Arrester Design

Test

14




GeneralEaton incorporates the latest in metal oxide varistor (MOV) technology in a porcelain design with its Cooper Power™ series VariSTAR™ Type AZL heavy-duty distribution-class MOV arrester in ratings of 3 through 36 kV. With this combination of technologies, Eaton can offer reliable and cost effective overhead protection of distribution systems.

ConstructionThe VariSTAR Type AZL arrester consists of highly nonlinear metal oxide varistors enclosed in a porcelain housing. The highly nonlinear nature of the MOV disks results in conduction of leakage current of milliamperes at nominal line-to-ground operating voltage. This small amount of leakage current (which is primarily capacitive current with a small component of resistive current) can be tolerated on a continuous basis.

The VariSTAR Type AZL design is available with or without an isolator and can be supplied with a variety of mounting brackets to satisfy a wide range of applications.

Operation The operation of the VariSTAR Type AZL is typical of gapless metal oxide arresters. During steady state conditions, nominal line-to-ground voltage is applied continuously across the arrester‘s terminals. When overvoltages occur, the VariSTAR Type AZL arrester limits the overvoltage to required protective levels by conducting the surge current. Upon passage of the overvoltage condition, the arrester returns to a highly nonlinear steady state, conducting minimal leakage current.

The superior protective characteristics of the VariSTAR Type AZL arrester provide excellent protection for distribution transformers with lower impulse withstand capabilities. Its superior reliability makes it an ideal choice for areas with high isokeraunic levels.

VariSTAR™ Type AZL heavy-duty distribution-class MOV arrester

CA235006EN-1

Surge ArrestersCatalog Data CA235006EN

Effective February 2015 Supersedes TD235007EN September 2014

COOPER POWERSERIES

Features and detailed description Production testsA complete production test program ensures a quality product. Each VariSTAR metal oxide varistor receives a series of electrical tests. Quality is further ensured by a series of destructive tests performed on every batch of varistors. Listed are the tests that are performed on the varistors:• 100% Physical Inspection• 100% Discharge Voltage Test• 100% V1mA/cm2

• 100% Leakage Current at 80% of V1mA/cm2 Voltage

• Batch High-current, Short-duration Test• Batch Thermal Stability Test• Batch Disk Aging Test

Each VariSTAR Type AZL arrester must pass the following production tests:• 100% Physical Inspection• 100% Vacuum over Fluid Seal Test• 100% Leakage Current Test• 100% RIV Test

StandardsThe VariSTAR Type AZL arrester complies with the latest revision of IEEE Std C62.11™-1987 standard “IEEE Standard for Metal Oxide Surge Arresters for AC Power Circuits”.

General application recommendationsThe rating of an arrester is the power frequency line-to-ground voltage at which the arrester is designed to pass an operating duty-cycle test. Table 1 provides a general application guide for the selection of the proper arrester rating for a given system voltage and system grounding configuration.

Eaton's application engineers are available to make recommendations. The following information is normally required:





Figure 1. Cutaway illustration of VariSTAR AZL arrester.

INSULATING TERMINAL CAP

Polymer cap provides superior wildlife protection.

TOP ELECTRODE

Ensures low resistive contact to MOV disk column.

MOV DISKS

Highly nonlinear metal oxide varistors provide exceptional surge pro-tection.

HEAVY STEEL COIL SPRING

Maintains high pres-sure on disks for effective contact sur-faces; protects from mechanical shock.

COPPER STRAP

Provides a low resistance shunt for surge current discharge.

SOLDERLESS CONNECTORS

Accommodates No. 10 solid through No. 2/0 stranded line and ground leads.

ISOLATOR™ GROUND LEAD DISCONNECTOR

Provides positive isolation and visual identification if arrester becomes damaged internally.

IDENTIFICATION INFORMATION

Convenient reference for arrester type, MCOV, voltage rating and year and quarter of manufacture.

ALUMINUM SPACER

Provides additional length for extended creepage porcelain.

HIGH STRENGTH WET PROCESS GLAZED PORCELAIN

Withstands thermal and mechanical shocks; excellent washing character-istics; provides high creepage distance above and below the hanger bracket.

CA235006EN-2


VariSTAR Type AZL heavy-duty distribution-class MOV arrester


Where unusual conditions exist (high ground resistance, high capacitive load, arc-welding equipment, etc.) the following supplementary information is necessary:

1. The unusual condition.

2. Type of construction, phase spacing, length of line, conductor size.

3. BIL of equipment and line insulation.

4. Phase-sequence components of impedances on the load side of the distribution substation.

The impedance of the transformer and the impedance and grounding of supply to the substation all affect the voltage during faults.

The Temporary Overvoltage (TOV) capability of the VariSTAR AZL arrester is shown in Figure 2.

Performance test characteristicsThe VariSTAR AZL arrester consistently withstands the following design tests as described by IEEE Std C62.11™-1987 standard:

Duty cycle20 current surges of 10 kA crest 8/20 µs waveshape followed by 2 current surges of 40 kA crest 8/20 µs waveshape.

High-current, short-duration discharge:2 current surges of 100 kA crest 4/10 µs waveshape.

Low-current, long-duration discharge:20 current surges of 250 A crest 2000 µs rectangle wave duration.

Following each of these tests, the arresters remain thermally stable as verified by:• Continually decreasing power values

during a thirty minute power monitoring period.

• No evidence of physical or electrical deterioration.

• The 10 kA (8/20 µs) discharge voltages measured after each test changed by less than 10% from the initial values.


Table 1. Commonly Applied Voltage Ratings of the VariSTAR AZL Arrester


Recommended Arrester Rating(kV rms)

Nominal Maximum

Four-Wire WyeMulti-GroundedNeutral

Three-Wire WyeSolidly GroundedNeutral

Delta andUngroundedWye

2.4 2.54 – – 3

4.16Y/2.4 4.4Y/2.54 3 6 6

4.16 4.4 – – 6

4.8 5.08 – – 6

6.9 7.26 – – 9

8.32Y/4.8 8.8Y/5.08 6 9 –

12.0Y/6.93 12.7Y/7.33 9 12 –

12.47Y/7.2 13.2Y/7.62 9 15 –

13.2Y/7.62 13.97Y/8.07 10 15 –

13.8Y/7.97 14.52Y/8.38 10 15 –

13.8 14.52 – – 18

20.78Y/12.0 22Y/12.7 15 21 –

22.86Y/13.2 24.2Y/13.87 18 24 –

23 24.34 – – 30

24.94Y/14.4 26.4Y/15.24 18 27 –

27.6Y/15.93 29.3Y/16.89 21 30 –

34.5Y/19.92 36.5Y/21.08 27 36 –

46Y/26.6 48.3Y/28 36 – –


10 100 100010.9

10000

1

1.1

1.2

1.3

1.4

1.5

1.6

1.7

Per Unit Arrester Rating

Per Unit MCOV

0.1

CA235006EN-3




Protective characteristicsThe protective characteristics of the VariSTAR AZL arresters are shown in Table 2.

Insulation characteristicsThe insulation characteristics of the VariSTAR AZL arresters are shown in Table 3.

Table 2. Protective Characteristics


MCOV(kV rms)

Front-of-waveProtectiveLevel*(kV crest)

Maximum Discharge Voltage (kV crest)8/20 µs Current Wave

1.5 kA 3 kA 5 kA 10 kA 20 kA 40 kA

3 2.55 10.7 8.2 8.7 9.2 10.0 11.3 13.6

6 5.10 21.4 16.4 17.4 18.4 20.0 22.5 27.1

9 7.65 32.1 24.5 26.1 27.5 30.0 33.8 40.7

10 8.40 35.3 27.0 28.7 30.3 33.0 37.2 44.7

12 10.20 42.8 32.7 34.7 36.7 40.0 45.0 54.2

15 12.70 53.5 40.9 43.4 45.9 40.0 56.3 67.8

18 15.30 64.2 49.1 52.1 55.1 60.0 67.6 81.4

21 17.00 74.9 57.3 60.8 64.3 70.0 78.8 94.9

24 19.50 84.3 64.4 68.4 72.3 78.8 88.7 106.8

27 22.00 95.2 72.8 77.3 81.7 89.0 100.2 120.7

30 24.40 105.9 81.0 86.0 90.9 99.0 111.5 134.2

36 29.00 124.8 95.4 101.3 107.0 116.6 131.3 158.1

* Based on 10 kA current impulse that results in a discharge voltage cresting in 0.5µs.

Table 3. Insulation Characteristics


Creepage Strike Insulation Withstand Voltages

(in.) (cm) (in.) (cm)

1.2/50 μs Impulse (kV crest)

1 min. Dry (kV rms)

10 sec. Wet (kV rms)

3 2.8 7.1 2.0 5.1 45 15 13

6 6.6 16.8 4.5 11.4 60 21 20

9 10.4 26.4 7.0 17.8 75 27 24

10 10.4 26.4 7.0 17.8 75 27 24

12 13.2 33.5 8.9 22.6 95 35 30

15 13.2 33.5 8.9 22.6 95 35 30

18 17.9 45.5 12.0 30.5 125 42 36

21 17.9 45.5 12.0 30.5 125 42 36

24 21.7 55.1 14.4 36.6 150 70 60

27 21.7 55.1 14.4 36.6 150 70 60

30* 26.4 67.1 17.5 44.5 200 95 80

36* 26.4 67.1 17.5 44.5 200 95 80

* Not applicable to AZL19C Series.

CA235006EN-4




Dimensions and clearancesThe dimensions and clearances of the VariSTAR AZL arresters are shown in Figures 3, 4 and 5.

Figure 3. Dimensions for AZL1A, AZL1B, and AZL19B series.* All clearances are measured from centerline of arrester per IEEE Std C62.11™-1987 standard.


DimensionsMinimum Recommended Clearances*

A B C D E Phase-to-GroundPhase-to-Phase

(in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm)

3 9.19 23.3 5.20 13.2 6.04 15.3 10.77 27.4 4.12 10.5 3.4 8.6 5.2 13.26 11.67 29.6 5.20 13.2 8.52 21.6 13.25 33.7 4.12 10.5 4.5 11.4 6.5 16.59 14.77 37.5 5.82 14.8 11.00 27.9 15.73 40.0 4.12 10.5 5.6 14.2 8.0 20.310 14.77 37.5 5.82 14.8 11.00 27.9 15.73 40.0 4.12 10.5 5.6 14.2 8.0 20.312 17.25 43.8 6.44 16.4 12.86 32.7 17.59 44.7 4.12 10.5 6.4 16.3 8.7 22.115 17.25 43.8 6.44 16.4 12.86 32.7 17.59 44.7 4.12 10.5 7.1 18.0 9.7 24.618 20.97 53.3 7.06 17.9 15.96 40.5 20.69 52.6 4.12 10.5 9.6 24.4 12.2 31.021 20.97 53.3 7.06 17.9 15.96 40.5 20.69 52.6 4.12 10.5 9.6 24.4 12.2 31.024 24.07 61.1 7.68 19.5 18.44 46.8 23.17 58.9 4.12 10.5 11.1 28.2 14.2 36.127 24.07 61.1 7.68 19.5 21.22 53.9 32.20 81.8 4.38 11.1 11.1 28.2 14.2 36.130 27.79 70.6 8.3 21.1 24.32 61.8 35.30 89.7 4.38 11.1 11.1 28.2 14.2 36.136 27.79 70.6 8.30 21.1 24.32 61.8 35.30 89.7 4.38 11.1 13.1 33.3 17.2 43.7

Figure 4. Dimensions for AZL31B series.

ote:N Columns B, C, & D are calculated with the bracket located at the top of the bellyband region.

ote:N Mounting Lug Spacing for 3 through 24 kV is 2.5” (6.4 cm) and for 27 through 36 kV is 9.25” (23.5 cm).

*All clearances are measured from centerline of arrester per IEEE C62.11™-1987 standard..


Dimensions Minimum Recommended Clearances*

A B Phase-to-Ground Phase-to-Phase

(in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm)

3 9.19 23.3 5.20 13.2 3.4 8.6 5.2 13.26 11.67 29.6 5.20 13.2 4.4 11.2 6.5 16.59 14.77 37.5 5.82 14.8 5.6 14.2 8.0 20.310 14.77 37.5 5.82 14.8 5.6 14.2 8.0 20.312 17.25 43.8 6.44 16.4 6.4 16.3 8.7 22.115 17.25 43.8 6.44 16.4 7.1 18.0 9.7 24.618 20.97 53.3 7.06 17.9 9.6 24.4 12.2 31.021 20.97 53.3 7.06 17.9 9.6 24.4 12.2 31.024 24.07 61.1 7.68 19.5 11.1 28.2 14.2 36.127 24.07 61.1 7.68 19.5 11.1 28.2 14.2 36.130 27.79 70.6 8.30 21.1 11.1 28.2 14.2 36.136 27.79 70.6 8.30 21.1 13.1 33.3 17.2 43.7

2.75"REF.

TOP VIEW

A

B

1.69”

2.34”

2.56”

3.06” DIA.

0.20”

4.00”TO

5.00”

2.68”TO

4.00”

3.87”

A

0.20”

3.06”DIA.

C

D

B

ESIDE VIEW

IMPORTANTThe values shown in Figures 3, 4, and 5 are the minimum clearances recommended by Eaton. These clearances may be revised to meet local or system requirements for spacing or energized equipment. However, safe operating procedures must always be followed.

CA235006EN-5





Minimum Recommended Clearances*

DimensionsEnclosure Application Outdoor Application

Phase-to-Ground Phase-to-Phase Phase-to-Ground Phase-to-Phase A B

(in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm)

3 2.25 5.7 4.05 10.3 2.50 6.4 4.30 10.9 8.38 21.3 4.39 11.2

6 3.05 7.7 5.10 13.0 3.55 9.0 5.60 14.2 10.86 27.6 4.39 11.2

9 3.80 9.7 6.10 15.5 4.55 11.6 6.85 17.4 13.96 35.5 50.1 12.7

10 4.05 10.3 6.35 16.1 4.80 12.2 7.10 18.0 13.96 35.5 5.01 12.7

12 4.55 11.6 6.85 12.4 5.75 14.6 8.05 20.5 16.44 41.8 5.63 14.3

15 5.30 13.5 7.85 19.9 6.75 17.2 9.30 23.6 16.44 41.8 5.63 14.3

18 6.15 15.6 8.70 22.1 7.85 20.0 10.40 26.4 20.16 51.2 6.25 15.9

21 7.05 17.9 9.60 24.4 9.25 23.5 11.80 30.0 20.16 51.2 6.25 15.9

24 7.85 19.9 10.90 27.7 9.85 25.0 12.90 32.8 23.26 59.1 6.87 17.4

27 8.75 22.2 11.80 30.0 11.45 29.1 14.50 36.8 23.26 59.1 6.87 17.4

Figure 5. Dimensions for AZL19C series.

* All clearances are measured from centerline of arrester and are based upon the protective characteristics of the arrester.

Ordering informationTo order a VariSTAR AZL arrester, determine the voltage rating for the intended application using Table 1.

Specify the appropriate catalog number from Table 4. Contact an Eaton representative for applications not listed.

Table 4. Ordering Information

Arrester Rating(kV rms)

Catalog Numbers: VariSTAR Type AZL Arrester

CrossarmBracket and 19.25" Line Lead

Without CrossarmBracket Crossarm Bracket

Transformer MountingBracket

Cubicle Mounted(Without Isolator)

3 AZL1A3R AZL19B3R AZL1B3R AZL31B3R AZL19C503R










30 AZL1A30R AZL19B30R AZL1B30R AZL31B30R

36 AZL1A36R AZL19B36R AZL1B36R AZL31B36R

A

B

2.34”

3.06” DIA.

0.20”

1.24”

3.87”

CA235006EN-6




VariSTAR™ AZS normal-duty distribution-class MOV arrester

GeneralEaton's Cooper Power™ series VariSTAR™ AZS normal-duty distribution-class MOV arrester in ratings of 3 through 36 kV, incorporates the latest in metal oxide varistor (MOV) technology in a porcelain design. With this combination of technologies, Eaton can offer reliable and cost effective overhead protection of distribution systems.

ConstructionThe VariSTAR AZS arrester consists of highly nonlinear metal oxide varistors enclosed in a porcelain housing. The highly nonlinear nature of the MOV disks results in conduction of leakage current of milliamperes at nominal line-to-ground operating voltage. This small amount of leakage current (which is primarily capacitive current with a small component of resistive current) can be tolerated on a continuous basis.

The VariSTAR AZS design is available with or without an isolator and can be supplied with a variety of mounting brackets to satisfy a wide range of applications.

OperationThe operation of the VariSTAR AZS arrester is typical of gapless metal oxide arresters. During steady state conditions, nominal line-to-ground voltage is applied continuously across the arrester‘s terminals. When overvoltages occur, the AZS arrester limits the overvoltage to required protective levels by conducting the surge current. Upon passage of the overvoltage condition, the arrester returns to a highly nonlinear steady state, conducting minimal leakage current.

The superior protective characteristics of the VariSTAR AZS arrester provide excellent protection for distribution transformers with lower impulse withstand capabilities. Its superior reliability makes it an ideal choice for areas with moderate isokeraunic levels.

Surge ArresterCatalog Data CA235017EN

Effective June 2015 Supersedes TD235008EN September 2014

COOPER POWERSERIES

Features and detailed description Production testsA complete production test program ensures a quality product. Each VariSTAR metal oxide varistor receives a series of electrical tests. Quality is further ensured by a series of destructive tests performed on every batch of varistors. Listed are the tests that are performed on the varistors:• 100% Physical Inspection• 100% Discharge Voltage Test• 100% V1mA/cm2

• 100% Leakage Current at 80% of V1mA/cm2 Voltage

• Batch High-current, Short-duration Test• Batch Thermal Stability Test• Batch Disk Aging Test

Each VariSTAR AZS arrester must pass the following production tests:• 100% Physical Inspection• 100% Vacuum over Fluid Seal Test• 100% Leakage Current Test

• 100% RIV Test

StandardsThe VariSTAR AZS arrester complies with the latest revision of IEEE C62.11™-1987 standard, “IEEE Standard for Metal Oxide Surge Arresters for AC Power Circuits”.

General application recommendationsThe rating of an arrester is the power frequency line-to-ground voltage at which the arrester is designed to pass an operating duty-cycle test. Table 1 provides a general application guide for the selection of the proper arrester rating for a given system voltage and system grounding configuration.

Eaton application engineers are available to make recommendations. The following information is normally required:





Figure 1. Cutaway illustration of VariSTAR AZS arrester.

INSULATING TERMINAL CAP

Polymer cap provides superior wildlife protection.

TOP ELECTRODE

Ensures low resistive contact to MOV disk column.

MOV DISKS

Highly nonlinear metal oxide varistors provide exceptional surge protection.

HEAVY STEEL COIL SPRING

Maintains high pressure on disks for effective contact surfaces; protects from mechanical shock.

COPPER STRAP

Provides a low resistance shunt for surge current discharge.

SOLDERLESS CONNECTORS

Accommodates No. 10 solid through No. 2/0 stranded line and ground leads.

ISOLATOR™ GROUND LEAD DISCONNECTOR

Provides positive isolation and visual identification if arrester becomes damaged internally.

IDENTIFICATION INFORMATION

Convenient reference for arrester type, MCOV, voltage rating and year and quarter of manufacture.

ALUMINUM SPACER

Provides additional length for extended creepage porcelain.

HIGH STRENGTH WET PROCESS GLAZED PORCELAIN

Withstands thermal and mechanical shocks; excellent washing characteristics; provides high creepage distance above and below the hanger bracket.

2

Catalog Data CA235017ENEffective June 2015

VariSTAR AZS normal-duty distribution-class MOV arrester


Where unusual conditions exist (high ground resistance, high capacitive load, arc-welding equipment, etc.) the following supplementary information is necessary:

1. The unusual condition.

2. Type of construction, phase spacing, length of line, conductor size.

3. BIL of equipment and line insulation.

4. Phase-sequence components of impedances on the load side of the distribution substation.

The impedance of the transformer and the impedance and grounding of supply to the substation all affect the voltage during faults.

Temporary overvoltage (Tov) capabilityThe Temporary Overvoltage (TOV) capability of the VariSTAR AZS arrester is shown in Figure 2.

Performance test characteristicsThe VariSTAR AZS arrester consistently withstands the following design tests as described by IEEE Std C62.11™-1987 standard:• Duty Cycle:

• 22 current surges of 5 kA crest 8/20 µs waveshape.

• High-current, Short-duration Discharge:

• 2 current surges of 65 kA crest 4/10 µs waveshape.

• Low-current, Long-duration Discharge:

• 20 current surges of 75 A crest 2000 µs rectangle wave duration.


monitoring period.• No evidence of physical or electrical deterioration.• The 5 kA (8/20 µs) discharge voltages measured after each test

changed by less than 10% from the initial values.



10 100 10001

0.9

10000

1

1.1

1.2

1.3

1.4

1.5

1.6

1.7

Per Unit Arrester Rating

Per Unit MCOV

0.1

Table 1. Commonly Applied Voltage Ratings of the VariSTAR Type AZS Arrester


Recommended Arrester Rating(kV rms)

Nominal Maximum

Four-Wire WyeMulti-GroundedNeutral

Three-Wire WyeSolidly GroundedNeutral

Delta andUngroundedWye

2.4 2.54 – – 3

4.16Y/2.4 4.4Y/2.54 3 6 6

4.16 4.4 – – 6

4.8 5.08 – – 6

6.9 7.26 – – 9

8.32Y/4.8 8.8Y/5.08 6 9 –

12.0Y/6.93 12.7Y/7.33 9 12 –

12.47Y/7.2 13.2Y/7.62 9 15 –

13.2Y/7.62 13.97Y/8.07 10 15 –

13.8Y/7.97 14.52Y/8.38 10 15 –

13.8 14.52 – – 18

20.78Y/12.0 22Y/12.7 15 21 –

22.86Y/13.2 24.2Y/13.87 18 24 –

23 24.34 – – 30

24.94Y/14.4 26.4Y/15.24 18 27 –

27.6Y/15.93 29.3Y/16.89 21 30 –

34.5Y/19.92 36.5Y/21.08 27 36 –

46Y/26.6 48.3Y/28 36 – –

3




Protective characteristicsThe protective characteristics of the VariSTAR AZS arresters are shown in Table 2.

Insulation characteristicsThe insulation characteristics of the VariSTAR AZS arresters are shown in Table 3.

Table 2. Protective Characteristics

Arrester Rating (kV rms) MCOV (kV rms)

Front-of-wave Protective Level* (kV crest)

Maximum Discharge voltage (kV crest)8/20 μs Current Wave

1.5 kA 3 kA 5 kA 10 kA 20 kA 40 kA

3 2.55 10.2 8.6 9.2 9.8 10.8 12.8 15.9

6 5.10 20.4 17.2 18.4 19.6 21.7 25.5 31.9

9 7.65 30.6 25.8 27.6 29.4 32.5 38.3 47.8

10 8.40 33.7 28.4 30.5 32.4 35.9 42.2 52.7

12 10.20 40.8 34.4 36.8 39.2 43.4 51.0 63.8

15 12.70 51.0 43.0 46.1 49.0 54.2 63.8 79.7

18 15.30 61.2 51.6 55.3 58.8 65.1 76.6 95.7

21 17.00 71.3 60.2 64.5 68.6 75.9 89.3 111.6

24 19.50 80.4 67.8 72.7 77.4 85.6 100.7 125.8

27 22.00 91.9 77.5 83.1 88.4 97.9 115.1 143.8

30 24.40 101.1 85.2 91.4 97.2 107.6 126.6 158.1

36 29.00 119.5 100.8 108.1 115.0 127.2 149.7 187.0

* Based on 5 kA current impulse that results in a discharge voltage cresting in 0.5µs.

Table 3. Insulation Characteristics


Characteristics for AZS100M, AZS101M, AND AZS103M series* Characteristics for basemount (AZS100C series)

Creepage Strike 1.2/50 us impulse (kV crest)

1 min Wet (kV rms)

10 sec Wet (kV rms)

Creepage Strike 1.2/50 us impulse (kV crest)

1 min Dry (kV rms)

10 sec Wet (kV rms)(in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm)

3 2.8 7.1 2.0 5.1 45 15 13 10.9 27.7 8.7 22.1 125 70 60

6 6.6 16.8 4.5 11.4 60 21 20 10.9 27.7 8.7 22.1 125 70 60

9 10.4 26.4 7.0 17.8 75 27 24 13.5 34.3 10.4 26.4 150 80 70

10 10.4 26.4 7.0 17.8 75 27 24 13.5 34.3 10.4 26.4 150 80 70

12 13.2 33.5 8.9 22.6 95 35 30 13.5 34.3 10.4 26.4 150 80 70

15 13.2 33.5 8.9 22.6 95 35 30 16.6 42.2 12.6 32.0 175 90 80

18 17.9 45.5 12.0 30.5 125 42 36 16.6 42.2 12.6 32.0 175 90 80

21 17.9 45.5 12.0 30.5 125 42 36 – – – – – – –

24 21.7 55.1 14.4 36.6 150 70 60 – – – – – – –

27 21.7 55.1 14.4 36.6 150 70 60 – – – – – – –

30** 26.4 67.1 17.5 44.5 200 95 80 – – – – – – –

36** 26.4 67.1 17.5 44.5 200 95 80 – – – – – – –

* Refer to pages 5 and 6.

** Not applicable to AZS103M Series.

4




Dimensions and clearancesThe dimensions and clearances of the VariSTAR AZS arresters are shown in Figures 4, 5 and 6.



A B Phase-to-Ground Phase-to-Phase

(in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm)

3 9.19 23.3 5.20 13.2 3.4 8.6 5.2 13.2

6 11.67 29.6 5.20 13.2 4.4 11.2 6.5 16.5

9 14.77 37.5 5.82 14.8 5.6 14.2 8.0 20.3

10 14.77 37.5 5.82 14.8 5.6 14.2 8.0 20.3

12 17.25 43.8 6.44 16.4 6.4 16.3 8.7 22.1

15 17.25 43.8 6.44 16.4 7.1 18.0 9.7 24.6

18 20.97 53.3 7.06 17.9 9.6 24.4 12.2 31.0

21 20.97 53.3 7.06 17.9 9.6 24.4 12.2 31.0

24 24.07 61.1 7.68 19.5 11.1 28.2 14.2 36.1

27 24.07 61.1 7.68 19.5 11.1 28.2 14.2 36.1

30 27.79 70.6 8.30 21.1 11.1 28.2 14.2 36.1

36 27.79 70.6 8.30 21.1 13.1 33.3 17.2 43.7

Figure 3. Dimensions for AZS100M and AZS101M series.* All clearances are measured from centerline of arrester per IEEE C62.11™-1987 standard.



A B C D E Phase-to-Ground Phase-to-Phase

(in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm)

3 9.19 23.3 5.20 13.2 6.04 15.3 10.77 27.4 4.12 10.5 3.4 8.6 5.2 13.2

6 11.67 29.6 5.20 13.2 8.52 21.6 13.25 33.7 4.12 10.5 4.5 11.4 6.5 16.5

9 14.77 37.5 5.82 14.8 11.00 27.9 15.73 40.0 4.12 10.5 5.6 14.2 8.0 20.3

10 14.77 37.5 5.82 14.8 11.00 27.9 15.73 40.0 4.12 10.5 5.6 14.2 8.0 20.3

12 17.25 43.8 6.44 16.4 12.86 32.7 17.59 44.7 4.12 10.5 6.4 16.3 8.7 22.1

15 17.25 43.8 6.44 16.4 12.86 32.7 17.59 44.7 4.12 10.5 7.1 18.0 9.7 24.6

18 20.97 53.3 7.06 17.9 15.96 40.5 20.69 52.6 4.12 10.5 9.6 24.4 12.2 31.0

21 20.97 53.3 7.06 17.9 15.96 40.5 20.69 52.6 4.12 10.5 9.6 24.4 12.2 31.0

24 24.07 61.1 7.68 19.5 18.44 46.8 23.17 58.9 4.12 10.5 11.1 28.2 14.2 36.1

27 24.07 61.1 7.68 19.5 21.22 53.9 32.20 81.8 4.38 11.1 11.1 28.2 14.2 36.1

Figure 4. Dimensions for AZS103M series.

ote:N Columns B, C, & D are calculated with the bracket located at the top of the bellyband region

ote:N Mounting Lug Spacing for 3 through 24 kV is 2.5” (6.4 cm) and for 27 kV is 9.25” (23.5 cm).

* All clearances are measured from centerline of arrester per IEEE Std C62.11™-1987 standard.

A

B

1.69

2.34

2.56

3.06 DIA.

0.20

4.00to

5.00

2.68to

4.00

3.87

2.75"REF.

A

0.20

3.06DIA.

C

D

B

ESIDE VIEW

TOP VIEW

IMPORTANT The values shown in Figures 3, 4, and 5 are the minimum clearances recommended by Eaton. These clearances may be revised to meet local or system requirements for spacing or energized equipment. However, safe operating procedures must always be followed.

5




Figure 5. Dimensions for AZS100C series.

* All clearances are measured from centerline of arrester per IEEE Std C62.11™-1987 standard.

Ordering informationTo order a VariSTAR AZS arrester, determine the voltage rating for the intended application using Table 1.

Specify the appropriate catalog number from Table 4. Contact your Eaton representative for applications not listed.

Table 4. Ordering Information


Catalog Numbers: VariSTAR AZS Arrester

With NEMA®CrossarmBracket*

Without NEMA®CrossarmBracket*

Transformer MountingBracket*

Base Mounted(WithoutIsolator)

3 AZS101M003R AZS100M003R AZS103M003R AZS100C503







21 AZS101M021R AZS100M021R AZS103M021R –



30 AZS101M030R AZS100M030R – –

36 AZS101M036R AZS100M036R – –

* Protective terminal cap option available. To order option, change 0 after M in catalog number to 5. (Example: AZS101M503R)


Minimum Recommended Clearances*

Dimension A

Enclosure Application Outdoor Application

Phase-to-Ground Phase-to-Phase Phase-to-Ground Phase-to-Phase

(in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm) (in.) (cm)

3 3.2 8.1 4.9 12.4 3.6 9.1 5.1 13.0 11.2 28.4

6 4.2 10.7 6.2 15.7 4.7 11.9 6.5 16.5 11.2 28.4

9 5.5 14.0 7.7 19.6 6.2 15.7 8.1 20.6 13.0 33.0

10 5.5 14.0 7.7 19.6 6.2 15.7 8.1 20.6 13.0 33.0

12 6.2 15.7 8.4 21.3 7.0 17.8 8.8 22.4 13.0 33.0

15 7.0 17.8 9.4 23.9 7.8 19.8 9.9 25.1 15.1 38.5

18 9.5 24.1 11.9 30.2 10.6 26.9 12.5 31.7 15.1 38.5

A

6




supersedes i235-35 august 2014 ultrasil polymer-housed ... · • iec 60099-4 testing – full...

Documents