arrester characteristics for atpdraw users

Rev Aug-4-11 JJW

Select Arrester Type

Enter Desired Uc

or MCOV (rms) ----->

Current (A)

0.00001

0.00003

0.0001

0.0005

0.01

1

10

125

250

500

1000

1500

3000

5000

10000

20000

40000

100000

Voltage at 5kA =

Voltage at 10kA =

Arrester Class

Arrester Uc or MCOV (rms)

Interpolating above

Note from the Author

Greetings ATP Draw users. This spreadsheet is designed to make it easy to change arrester

ratings in ATPDraw. The data is based on realworld arresters as I have tested and used for

many years. I have tried to make this tool as user friendly and flexible as possible. If you see

a way to improve it or make it better in any way, please contact me and we can discuss. I can

be reached at [email protected].

Feel free to use it in any way and enjoy..

Jonathan Woodworth 7-20-11

Arrester VI Characteristic Tool by ArresterWorksHow to Use Arrester VI Characteristic Tool 1. Enter MCOV of Arrester in dark green Box of Table 1 2. Click on Copy Values to Clipboard Button 3. In ATP Draw open NLRES92 Dialog Box 4. Select Characteristic Tab 5. Paste Values . 6. Select View button in Dialog box to check that data entered correctly

5

Volts Peak Amps Volts Peak

1190.5 0.00001 1190

5952.4 0.00003 5952

8333.3 0.0001 8333

9226.2 0.0005 9226

9523.8 0.01 9524

10000.0 1 10000

10565.5 10 10565

11726.2 125 11726

12083.3 250 12083

12500.0 500 12500

13214.3 1000 13214

13690.5 1500 13690

14404.8 3000 14405

15119.0 5000 15119

16190.5 10000 16190

17797.6 20000 17798

20000.0 40000 20000

25000.0 100000 25000

15119

16145

Arrester Class

Arrester Uc or MCOV (rms)

About button

Interpolating above









0.0

5.0

10.0

15.0

20.0

25.0

30.0

0.00001 0.0001 0.001

Arr

est

er

Vo

ltag

e (

kVp

)

Typical Arrester Voltage

Arrester VI Characteristic Tool by ArresterWorks

182kV MCOV

0.00001 43333.33 0.00001 33333.33333 0.000009

0.00003 216666.7 0.00003 166666.6667 0.000027

0.0001 303333.3 0.0001 233333.3333 0.00009

0.0005 335833.3 0.0005 258333.3333 0.00045

140kV MCOV 3.5kV MCOV

0.01 0.1 1 10 100 1000 10000 100000

Arrester Current (A)

Typical Arrester Voltage-Current (VI) Characteristics

0.01 346666.7 0.01 266666.6667 0.009

1 364000 1 280000 0.9

10 384583.3 10 295833.3333 9

125 426833.3 125 328333.3333 112.5

250 439833.3 250 338333.3333 225

500 455000 500 350000 450

1000 481000 1000 370000 900

1500 498333.3 1500 383333.3333 1350

3000 524333.3 3000 403333.3333 2700

5000 550333.3 5000 423333.3333 4500

10000 589333.3 10000 453333.3333 9000

20000 647833.3 20000 498333.3333 18000

40000 728000 40000 560000 36000

100000 910000 100000 700000 90000

56kV MCOV 10kA

0.000009 13333.33

0.000027 66666.67

0.00009 93333.33

0.00045 103333.3

0.009 106666.7

0.9 112000

9 118333.3

112.5 131333.3

225 135333.3

450 140000

900 148000

1350 153333.3

2700 161333.3

4500 169333.3

9000 181333.3

18000 199333.3

36000 224000

90000 280000

Current (A) kVp

0.00001 1.2

0.00003 6.0

0.0001 8.3

0.0005 9.2

0.01 9.5

1 10.0

10 10.6

125 11.7

250 12.1

500 12.5

1000 13.2

1500 13.7

3000 14.4

5000 15.1

10000 16.2

20000 17.8

40000 20.0

100000 25.0

84kV MCOV Class 1 TLA

833.3333333 0.000009 20000

4166.666667 0.000027 100000

5833.333333 0.00009 140000

6458.333333 0.00045 155000

3.5kV MCOV

6666.666667 0.009 160000

7000 0.9 168000

7395.833333 9 177500

8208.333333 112.5 197000

8458.333333 225 203000

8750 450 210000

9250 900 222000

9583.333333 1350 230000

10083.33333 2700 242000

10583.33333 4500 254000

11333.33333 9000 272000

12458.33333 18000 299000

14000 36000 336000

17500 90000 420000

Uc -------> 8.4

Initial

Current

Current

Adjusted to

Type

Initial

Voltage

0.00001 0.00001 2

0.00003 0.00003 10

0.0001 0.0001 14

0.0005 0.0005 15.5

0.01 0.01 16

1 1 16.8

10 10 17.75

125 125 19.7

250 250 20.3

500 500 21

1000 1000 22.2

1500 1500 23

3000 3000 24.2

5000 5000 25.4

10000 10000 27.2

20000 20000 29.9

40000 40000 33.6

100000 100000 42

21kV MCOV 76 kVMCOV Station

0.00001 20000 0.000009 5000 0.00001 18095.24

0.00003 100000 0.000027 25000 0.00003 90476.19

0.0001 140000 0.00009 35000 0.0001 126666.7

0.0005 155000 0.00045 38750 0.0005 140238.1

70kV MCOV

0.01 160000 0.009 40000 0.01 144761.9

1 168000 0.9 42000 1 152000

10 177500 9 44375 10 160595.2

125 197000 112.5 49250 125 178238.1

250 203000 225 50750 250 183666.7

500 210000 450 52500 500 190000

1000 222000 900 55500 1000 200857.1

1500 230000 1350 57500 1500 208095.2

3000 242000 2700 60500 3000 218952.4

5000 254000 4500 63500 5000 229809.5

10000 272000 9000 68000 10000 246095.2

20000 299000 18000 74750 20000 270523.8

40000 336000 36000 84000 40000 304000

100000 420000 90000 105000 100000 380000

Type

8 1

Class or

Type Position

Current

Factor

Light Duty 1 0.7

Normal Duty 2 0.8

Heavy Duty 3 0.9

5kA 4 0.8

10kA 5 0.9

Station 6 1

Class 1 7 1.1

Class 2 8 1

Class 3 9 1.5

Class 4 10 2

Class 5 11 3

Predicting V10kA and V5kA using values near 5 and 10kA

e = k*In E

n = ln(E2/E1)/ ln(I2/I1) 0.095

k = E1/ I1n 6746.482

Voltage at 5000 amps 15119

Voltage at 10,000 amps 16145

Current Voltage

3000 14405

5000 15119

48kV MCOV MOR or 70kV EGL 70kV Class 1

0.000009 11428.57 0.000009 16666.67

0.000027 57142.86 0.000027 83333.33

0.00009 80000 0.00009 116666.7

0.00045 88571.43 0.00045 129166.7

0.009 91428.57 0.009 133333.3

0.9 96000 0.9 140000

9 101428.6 9 147916.7

112.5 112571.4 112.5 164166.7

225 116000 225 169166.7

450 120000 450 175000

900 126857.1 900 185000

1350 131428.6 1350 191666.7

2700 138285.7 2700 201666.7

4500 145142.9 4500 211666.7

9000 155428.6 9000 226666.7

18000 170857.1 18000 249166.7

36000 192000 36000 280000

90000 240000 90000 350000

Rev 8-3-11 Added V10ka and V5kA values interpolated

arrester characteristics for atpdraw users

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