insulator pins for wooden & steel cross armssq-bd.com/pdf/line_hardware_catalogue.pdf ·...

INSULATOR PINS FOR WOODEN & STEEL CROSS ARMS

MATERIAL : Pin-Drop-Forged Steel as per either ASTM A575 OR ASTM A576 NUT-as per ANSI C135.1 Square Washer: As per NEMA PH10, Part3.1.1 Lock Washer: Hot dip galvanized as per ANSI B18.21.1

FINISH: Hot-Dip Galvanized as per ASTM A153 & each pin shall bear the manufacturer symbol/identification mark

Strength: Cantilever Test : according to figure-IV, table-C & ANSI C135.17 Torsion Test: 1.728 kg-m of torque with tightening rotation of 1800 . Tensile Test: after applying 1.728 kg-m of torque, it has to withstand minimum tensile load of 1,363.64 kg.

THREAD: (I) Rolled Thread as per class 2 of ANSI B1.1 & ANSI C135.1 & Nut shall be tapped according to ANSI C135.1 table 8 (II) Lead Thread as per Figure-III & table B. Tolerance: As specified in respective figure or table

Dimension: As per Table “A”, “B” & mentioned in the Respective figure

Test & Inspection: As per ANSI C135.17.

Packing: Each package contains 50 Nos. insulator pin.

Origin: Bangladesh

FIGURE-I

NOTE 1: 5.715 cm (2-1/4”)X0.47625 (3/16”) SQUARE WASHER WITH 1.75 cm (11/16”) HOLE CONFORMING TO REQUIREMENT OF NEMA PHI0. NOTE 2: GALVANIZED EXTRA DUTY HELICAL CARBON STEEL SPRING LOCK WASHER AS PER ANSI B18.21.1 NOTE 3:LENGTH OF LEAD THREAD SHALL BE 4.445 cmc (1-3/4”)

ALLOWABLE VARIATIONS

a= 0.03968, b=0.07937 c= 0.15875, d=0.3175, x=0

(1/64”) (1/32”) (1/16”) (1/8”) (0”)

A SINGLE LETTER SUBSCRIPT INDICATES THAT THE PLUS AND MINUS VALUES ARE THE SAME; FOR EXAMPLE, Fd = F ± 0.3175 CM (1/8”)

TECHNO ELECTRICALS LIMITED, UNIT-3 156, Nasirabad Industrial Area, Chittagong-4210

TABLE-A

DIMENSION OF INSULATOR PINS FOR WOOD OR STEEL CROSS ARMS IN CM (INCHES)

Height above arm.

Length of shank

Nominal shank Diameter

Diameter of Base

Diameter of Shaft

Length of Thread

Square size

Diameter Lead Thread

Item No.

A B C D E F G H

Cross arm Type

Pin type

TRB-10 (5)

12.7 (5-3/4)

14.6 (5/8)

1.5875 (2)

5.08 (5/8)

1.5875 (2-3/4) 6.985

(3/4) 1.905

(1) 2.54

Wood Long

Shank TRB-940

(5) 12.7

(1-1/2) 3.81

(5/8) 1.5875

(2) 5.08

(5/8) 1.5875

(1-1/4) 3.175

(3/4) 1.905

(1) 2.54

Steel Short Shank

TRB-1220

(10) 25.4

(7) 17.78

(3/4) 1.905

(3-1/2) 8.89

(1-1/8) 2.8575

(3) 7.62

N/A (1-3/8) 3.4925

Wood Long

Shank TRB-1230

(10) 25.4

(1-3/4) 4.45

(3/4) 1.905

(3-1/2) 8.89

(1-1/8) 2.8575

(1-1/2) 3.81

N/A (1-3/8) 3.4925

Steel Short Shank

FIGURE-II

NOTE 1: 7.62 cm (3”)X 0.47625 cm (3/16”) SQUARE WASHER WITH 2.06375 (13/16”) HOLE CONFORMING TO REQUIREMENT OF NEMA PHIO. NOTE 2: GALVANIZED EXTRA DUTY HELICAL CARBON STEEL SPRING LOCK WASHER CONFORMING REQUIREMENTS OF ANSI B18.21.1. NOTE 3: LENGTH OF LEAD THREAD SHALL BE 5.3975 CMc (2-1/8”) ALLOWABLE VARIATIONS: a= 0.03968, b=0.07937 c= 0.15875, d=0.3175, x=0 (1/64”) (1/32”) (1/16”) (1/8”) (0”) A SINGLE LETTER SUBSCRIPT INDICATES THAT THE PLUS AND MINUS VALUES ARE THE SAME; FOR EXAMPLE, Fd = F ± 0.3175 CM (1/8”)


FIGURE-III

NOTE 1: THIS IS THE DIAMETER MEASURE BETWEEN THE TAPERED LINES PROJECTED ALONG THE OUTSIDE SURFACE OF THE THREADS AT TOP EXTREMITY OF THE LEAD HEAD. TAPER EQUALS 0.15875(1/16”) IN DIAMETER PER CM (INCH) IN LENGTH. NOTE 2: FOUR (4) THREADS PER 2.54 CM(1”)

TABLE-B

DIMENTION OF LEAD THREADS Item No. LEAD

HEAD A

B

C

D

E

F

G

TRB-10 & 940

CM INCHES

2.54 1

2.5654 1.010

2.84226 1.119

4.445 1.750

0.19843 5/64

2.06375 13/16

1.5875 5/8

0.11906 3/64

TRB-1220 & TRB-1230

CM INCHES

3.4925 1-3/8

3.5179 1.385

3.85572 1.518

5.4102 1.518

0.35718 9/64

2.8575 1-1/8

1.905 3/4

0.27781 7/64

CM +0.0254

-0.0127 +0.0508 -0.0254

+0.1524 -0.1524

ALLOWABLE VARIATIONS

INCHES

+0.010 -0.005

+0.020 -0.010

+0.06 -0.06


FIGURE-IV

NOTE 1: THE ANGLE OF DEFLECTION Ø SHALL BE MEASURED AS THE ROTATION OF THE STEEL THIMBLE IN THE PLANE DEFINED BY THE AXIS OF THE THIMBLE AND LOAD. NOTE 2: THE LOAD SHALL BE APPLIED AT A POINT EQUAL IN HEIGHT TO THE LAYER ARM (PIN HEIGHT ABOVE ARM), AT A RATE OF APPROXIMATELY 1.016 CM (0.4”) PER MINUTE, THROUGH A STEEL THIMBLE SCREWED TO THE LEAD HEAD.

TABLE-C

MINIMUM CANTILEVER TEST LOAD AT 10°

ITEM NUMBER MINIMUM LOAD(KGS) MINIMUM LOAD(LBS)

TRB-10 455 1,000 TRB-940 455 1,000 TRB-1220 955 2,100 TRB-1230 955 2,100


Pole Top Pin

Material : Pins: Iron or Steel as per ANSI C135.22 Lead Thread: Lead Alloy Strength : Pins: Cantilever Test : according to figure-III, table-1 & ANSI C135.17 Torsion Test: 1.728 kg-m of torque with tightening rotation of 180 degree. Tensile Test: after applying 1.728 kg-m of torque, it will withstand min. tensile load of 1,363.64 kg. Thread : Lead Thread made of Lead Alloy.

Finish : Both lead thread and pin shall be hot-dip galvanized as per ASTM A153, shall bear the manufacturer symbol/identification mark Dimension : As per Table “A”, “B” & mentioned in the respective figure Tolerance : As specified in respective figure or table. Test & Inspection : As per ANSI C135.22 Packing : Each package contains 50 (Nos.) pole top pins.

Origin BANGLADESH.

FIGURE-I

NOTE 1: CHANNEL LEGS MAY BE FLANGED OR OTHERWISE FORMED TO MEET STRENGTH REQUIREMENT. NOTE 2: THIS DIMENSION MAY BE VARIED TO PROVIDE REQUIRED STRENGTH. NOTE 3: THIS DIMENSION SHALL NOT BE LESS THAN 10.16 CM (4”)


TABLE-A

DIMENSION OF POLE TOP PIN IN INCHES

DIMENSION OF POLE TOP PIN:CM(INCH) ITEM No A B C D E F G H I J K

TRB-20

50.8 (20)

20.32 (8)

2.54 (1)

1.74625 (11/16)

1.74625 (11/16)

3.175 (1-1/4)

2.54 (1)

SEE NOTE-

3

4.7625 (1-7/8)

SEE NOTE-

2

SEE NOTE-

2

TRB-1280 50.8 (20)

20.32 (8)

3.4925 (1-3/8)

1.74625 (11/16)

1.74625 (11/16)

3.175 (1-1/4)

2.54 (1)

SEE NOTE-

3

4.7625 (1-7/8)

SEE NOTE-

2

SEE NOTE-

2 ALLOWABLE TOLERANCE

+CM -CM

0.625 0.3175

0.15875 0.15875

SEE FIG-2

0.07937 0

0.07937 0

0.15875 0.15875

N/A N/A

N/A N/A

0.15875 0.15875

N/A N/A

N/A N/A

+INCHES -INCHES

1/4 1/8

1/16 1/16

SEE FIG-2

1/32 0

1/32 0

1/16 1/16

N/A N/A

N/A N/A

1/16 1/16

N/A N/A

N/A N/A

FIGURE-II

NOTE 1: THIS IS THE DIAMETER MEASURED BETWEEN THE TAPERED LINES PROJECTED ALONG THE OUTSIDE SURFACE OF THE THREADS AT TOP EXTREMITY OF THE LEAD HEAD. TAPER EQUALS 0.15875(1/16”) IN DIAMETER PER CM (INCH) IN LENGTH. NOTE 2: FOUR (4) THREADS PER 2.54 CM (1”).

TABLE-B

DIMENSION OF LEAD THREAD

DIMENSION OF LEAD THREAD Item no LEAD

HEAD A B C D E F G

TRB-20

CM INCHES

2.54 1

2.5684 1.010

2.64228 1.119

4.445 1.750

0.19843 5/64

2.06375 13/16

1.5875 5/8

0.11906 3/64

TRB-1280

CM INCHES

3.4925 (1-3/8)

3.5179 1.385

3.85512 1.518

5.4102 2.130

0.35718 9/64

2.8578 1-1/8

1.905 3/4

0.27761 7/64

CM

+0.0254 -0.0127

+0.0508 -0.0254

+0.1524 -0.1524

ALLOWABE

VARIATIONS INCHES

+0.010 -0.005

+0.020 -0.010

+0.06 -0.06


FIGURE-III

NOTE - 1: APPLICATION OF LOAD MUST COINCIDE WITH CENTERLINE OF TESTING MACHINE. NOTE -2: THE ANGLE OF DEFLECTION (ANGLE ø) SHALL BE DETERMINED BY THE INTERSECTION OF THE CENTERLINE AXIS OF THE STEEL THIMBLE IN IT’S INITIAL POSITION WITH THE CENTERLINE AXIS OF THIS THIMBLE OBTAINED AT ANY EDFLECTED POSITION OF THE PIN NOTE - 3: THIS END OF THE STEEL THIMBLE SHOULD NOT EXTEND BEYOND LEAD THREAD.

TABLE-1 TEST SIZE OF PIN LEVER ARM MINIMUM REQUIRED LOAD BASED IN A

MAXIMUM DEFLECTION OF 10 DEGREES T 50. 8 CM (20”) 27.94 CM (11”) 680.40 Kg (1,500 Lbs) L 50.8 CM (20”) 27.94 CM (11”) 544.32 Kg (1,200 Lbs)


MACHINE BOLTS Material: Machine Bolts & Square Nuts - Steel as per ANSI C135.1 Strength: Tensile strength of machine bolt as per table 10 of ANSI C135.1 Bending strength as per section 6.2 of ANSI C135.1 Thread: Rolled Thread as per class 2 of ANSI B1.1 & ANSI C135.1 & Nut shall be tapped according to ANSI C135.1 table 8

Finish: Hot-Dip galvanized as per ASTM A153, shall bear the manufacturer symbol/ identification mark

Dimension :As per Table “A” and figure Tolerance: As specified in the table Test & Inspection: As per ANSI C135.1 Standard Packing: As per Table A

Origin : BANGLADESH

TABLE-A

DIMENSION, STRENGTHS, THREADS & PACKAGES OF MACHINE BOLTS

Dimension in cm(Inches) Units Item no

D L-1 L-2 Ultimate Tensile Strength in Kg

(lbs)

Number of Threads per 2.54

cm (Inches)

Quantity per package

TRB-30 1.27(1/2) 3.81(1-1/2) 2.54(1) 3,538(7800) 5.1181(13) 250 TRB-40 1.27(1/2) 15.24(6) 7.62(3) 3,538(7800) 5.1181(13) 200

TRB-4.10 1.27(1/2) 20.32(8) 10.16(4) 3,538(7800) 5.1181(13) 200 TRB-4.20 1.27(1/2) 25.40(10) 15.24(6) 3,538(7800) 5.1181(13) 200 TRB-4.30 1.27(1/2) 30.48(12) 7.62(3) 3,538(7800) 5.1181(13) 200 TRB-50 1.5875(5/8) 15.24(6) 10.16(4) 5,624(12400) 4.3307(11) 100 TRB-60 1.5875(5/8) 20.32(8) 10.16(4) 5624(12400) 4.3307(11) 100 TRB-70 1.5875(5/8) 25.40(10) 10.16(4) 5624(12400) 4.3307(11) 50 TRB-80 1.5875(5/8) 30.48(12) 15.24(6) 5624(12400) 4.3307(11) 50 TRB-90 1.5875(5/8) 35.56(14) 15.24(6) 5624(12400) 4.3307(11) 50 TRB-100 1.5875(5/8) 40.64(16) 15.24(6) 5624(12400) 4.3307(11) 50 TRB-110 1.5875(5/8) 45.72(18) 15.24(6) 5624(12400) 4.3307(11) 50 TRB-120 1.5875(5/8) 50.80(20) 15.24(6) 5624(12400) 4.3307(11) 50 TRB-130 1.905(3/4) 20.32(8) 10.16(4) 8324(18350) 3.9370(10) 50 TRB-140 1.905(3/4) 25.40(10) 10.16(4) 8324(18350) 3.9370(10) 50 TRB-150 1.905(3/4) 30.48(12) 15.24(6) 8324(18350) 3.9370(10) 50 TRB-160 1.905(3/4) 35.56(14) 15.24(6) 8324(18350) 3.9370(10) 50 TRB-170 1.905(3/4) 40.64(16) 15.24(6) 8324(18350) 3.9370(10) 50 TRB-950 1.5875(5/8) 3.81(1-1/2) 3.175(1-1/4) 5624(12400) 4.3307(11) 30


TOLERANCES

Tolerances before Galvanization Dimension Symbol Diameter Nominal Cm(Inch)

Diameter Maximum Cm(Inch)

Diameter Minimum Cm(Inch)

D 1.27 (1/2-0.500) 1.3081 (0.515) 1.22428 (0.482) D 1.5875 (5/8-0.625) 1.63068 (0.642) 1.5367 (0.605) D 1.905 (3/4-0.750) 1.95072 (0.768) 1.85166 (0.729)

Dimension Symbol Length Cm(Inch) Diameter

Cm(Inch) Tolerance Positive Cm(Inch)

Tolerance Positive Cm(Inch)

L1 3.81(1-1/2) 1.27 (1/2) 0.1016(0.04) 0.1524(0.06) L1 3.81(1-1/2) 1.5875 (5/8) 0.1524(0.06) 0.2032(0.08) L1 15.24-20.32 (6

THRU 8) 1.27 (1/2) 0.3048(0.12) 0.4572 (0.18)

L1 15.24-50.8(6 THRU 20)

1.5875 (5/8) 0.3556(0.14) 0.4572 (0.18)

L1 20.32-40.64(8 THRU 16)

1.905 (3/4) 0.3556(0.14) 0.4572 (0.18)

L2 2.54-3.81 (1 THRU 1-1/2)

1.27-1.905( ½ THRU ¾)

0.1589(1/16) 0.0794(1/32)

L2 7.62-15.24(3 THRU 6)

1.27-1.905( ½ THRU ¾)

0.3175(1/8) 0.15875(1/16)

OTHER DIMENSION, TOLERANCE & PERFORMANCE REQUIREMENTS ARE AS PER ANSI C135.1-1979, B1.1-1982, B18.2.1-1981, B18.2.2-1972.


OVAL- EYE BOLTS

Material: Bolts-as per ANSI C135.4 Nuts-as per ANSI C135.4 Strength: Tensile strength of bolt & nut as per Section 6 of ANSI C135.4 Bending strength as per section 6.2 of ANSI C135.4 Thread: Rolled Thread as per class 2 of ANSI B1.1 & ANSI C135.1 & Nut shall be tapped according to ANSI C135.1 table 8


Dimension: As per Table “A” , ANSI C135.4 & Fig. Tolerance: As specified in the table Test & Inspection: As per ANSI C135.4 Packing: Each package contains 50 pieces of oval eye bolt.

Origin : BANGLADESH

TABLE-A

DIMENSIONS, STRENGTH & THREADS OF OVAL EYE BOLT

Item no Dimension in cm(Inches)

A B C D d L1 L2 R

Ultimate Tensile

Strength Kg (lbs)

Thread per 2.54

Cm (Inches)

TRB-180 3.81

(1-1/2) 5.08 (2)

5.08 (2)

1.38906 (35/64)

1.5875 (5/8)

20.32 (8)

10.16 (4)

0.794 (5/16)

5624 (12,400)

11

TRB-190 3.81

(1-1/2) 5.08 (2)

5.08 (2)

1.38906 (35/64)

1.5875 (5/8)

25.4 (10)

10.16 (4)

0.794 (5/16)

5624 (12,400)

11

TRB-200 3.81

(1-1/2) 5.08 (2)

5.08 (2)

1.38906 (35/64)

1.5875 (5/8)

30.48 (12)

15.24 (6)

0.794 (5/16)

5624 (12,400)

11

TRB-210 3.81

(1-1/2) 5.08 (2)

5.08 (2)

1.38906 (35/64)

1.5875 (5/8)

35.56 (14)

15.24 (6)

0.794 (5/16)

5624 (12,400)

11

TRB-220 3.81

(1-1/2) 5.08 (2)

5.08 (2)

1.38906 (35/64)

1.5875 (5/8)

45.72 (18)

15.24 (6)

0.794 (5/16)

5624 (12,400)

11

ALLOWABLE VARIATIONS:

C=0.15875 cm(1/16”), d=0.317 cm (1/8”), f= 0.635 cm (1/4”), h=1.27cm (1/2”) Single - letter superscript indicates that plus and minus value are the same, a double-letter superscript indicates that the plus value is that of the first letter and the minus value is that of the second letter.


DOUBLE-ARMING BOLTS

Material: Bolts-As per ANSI C135.1 Nuts-As per ANSI C135.1 Strength : Tensile strength of bolt & nut as per table A or Table 10 of ANSI C135.1 Bending strength as per section 6.2 of ANSI C135.4 Thread : Rolled Thread as per class 2 of ANSI B1.1 & ANSI C135.1 & Nut shall be tapped according to ANSI C135.1 table 8


Dimension : Bolt- As per Table “A” or table 11 of ANSI C135.1 Nut- as per ANSI B18.2.2 Tolerance: As per ANSI C135.1 or B1.1 or B18.2.2 Test & Inspection: As per ANSI C135.4 Packing: Each package shall contain 25 pieces double arming bolts.

Origin : BANGLADESH

TABLE-A

DIMENSIONS, STRENGTH & THREADS

Item No.

Dimensions in Cm (Inches) Minimum Tensile Strength Kg (Lbs)

Threads per 2.54 Cm(Inches)

Length Diameter

TRB-260 40.64 (16)

1.5875 (5/8)

5,624 (12,400)

11

TRB-270 45.72 (18)

1.5875 (5/8)

5,624 (12,400)

11

TRB-280 50.80 (20)

1.5875 (5/8)

5,624 (12,400) 11

TRB-290 55.88 (22)

1.5875 (5/8)

5,624 (12,400)

11

TRB-300 60.96 (24)

1.5875 (5/8)

5,624 (12,400)

11

TRB-1160 55.88 (22)

1.905 (3/4)

8,324 (18,350)

10

TRB-1170 60.96 (24)

1.905 (3/4)

8,324 (18,350)

10


CARRIAGE BOLTS

Material: Bolts-As per ANSI C135.1,ASTM A663 & ASTM A675 Nuts-As per ANSI C135.1,ASTM A663 & ASTM A675 Strength : As per ANSI C135.1 Thread : Rolled Thread as per class 2 of ANSI B1.1 & ANSI C135.1 & Nut shall be tapped according to ANSI C135.1 table 8

Finish: Hot-Dip galvanized as per ASTM A153 shall bear the manufacturer symbol/

identification mark Dimension : As per Table “A” or Bolt- as per ANSI C135.1 & Bolt Head- as per ANSI B18.5 Tolerance: As per ANSI C135.1 or B1.1 or B18.2.2 Test & Inspection: As per ANSI C135.1 Packing: Each package contains 250 carriage bolts.

Origin : BANGLADESH

Table-A

DIMENSIONS OF CARRIAGE BOLTS

Item no. All Dimensions before Galvanizing in Cm (Inches)

Symbol Dimensions Nominal Maximum Minimum

D1

0.9525 (3/8)

0.98552 (0.388)

0.9144 (0.360)

D2

2.06375 (13/16)

2.14376 (0.844)

1.98628 (0.782)

H1

0.51593 (13/64)

0.55626 (0.219)

0.47752 (0.188)

H2

0.51593 (13/64)

0.52832 (0.208)

0.47752 (0.188)

L1

11.43 (4 -1/2)

11.5824 (4.56)

11.176 (4.40)

L2

7.62 (3)

8.255 (3.25)

7.62 (3.00)

TRB-320

W

0.9525 (3/8)

0.98552 (0.388)

0.9144 (0.368)

**Other dimensions, tolerances & performance requirements are as per ANSI C135.1, B1.1 & B18.2.1 & B18.2.2.


SINGLE & DOUBLE UPSET SPOOL INSULATOR BOLTS

Material: Bolts-as per section 3 of ANSI C135 or NEMA PH 31 Washer- As per NEMA Pub. No. PH10. Strength : As specified in the table-A Thread : Rolled Thread as per class 2 of ANSI B1.1 & ANSI C135.1 & Nut shall be tapped according to ANSI C135.1 table 8 Finish :Hot-Dip galvanized as per ASTM A153

shall bear the manufacturer symbol/ identification mark

Dimension : Nut-As per ANSI C135.31 and Table “A” & figure 1 Bolt- as per ANSI B18.2.2 Tolerance: As specified in respective figure Test & Inspection: as per section 7 of ANSI C135.31 according to the figure-II Other Standard: Stated in ANSI C135.31, B1.1, B18.2.2, C135.1 or NEMA PH 31 Packing: Each package shall contain 50 pieces of single & double upset spool insulator bolts.

Origin : BANGLADESH

NOTE-1: A WRENCHING SURFACE SHALL BE PROVIDED IN THIS AREA. WRENCHING SURFACES SHALL NOT AFFECT THE INTEGRITY OR UTILIZATION OF THE UPSET SPOOL INSULATOR BOLT OR DAMAGE THE INSULATOR IN SERVICE. NOTE-2: ROUND WASHER CONFOMING TO NEMA PHIO.


ALLOWABLE VARIATIONS a= 0.03968, b=0.07937, c= 0.15875, d=0.3175, e=0.47625, f= 0.635, g=0.9525, h= 1.27, x=0 (1/64”) (1/32”) (1/16”) (1/8”) (3/16”) (1/4”) (3/8”) (1/2”) (0”) SINGLE LETTER TOLERANCE = ± Variation, d ± 0.125 (1/8”)

Two Letter Tolerance =+First Variation,-Second Variation, gb=+0.9525(3/8”)-0.07935(1/32”)=0.875125(11/32")

TABLE-A

UPSET SPOOL INSULATOR BOLT DATA

Item No. Length

Cm(Inch) Type of Upset

Bolt

No. of threads per

2.54 cm(Inch)

Length of mounting threads

cm(Inch)

Minimum Tensile strength

Kg(Lbs)

TRB-330 20.32 (8) Single 11 10.16(4) 5,624.7(12,400) TRB-340 25.44 (10) Single 11 10.16(4) 5,624.7(12,400) TRB-350 30.48 (12) Single 11 15.24(6) 5,624.7(12,400) TRB-360 20.32 (8) Double 11 10.16(4) 5,624.7(12,400) TRB-370 25.40(10) Double 11 10.16(4) 5,624.7(12,400) TRB-380 30.48(12) Double 11 15.24(6) 5,624.7(12,400) Diameter of shank before galvanizing , Nominal 1.587 Cm (0.625”) Maximum 1.630 Cm (0.642”), Minimum 1.5367 Cm (0.605”). Other dimension, tolerance and performance requirements and thread design requirements are stated in ANSI Standards C135.31, B1.1, B18.2.2, C135.1 and NEMA PH 31 or current edition of these standards.


DIMENSIONS FOR FIGURE 1 IN CM (INCH)

A B C D E F G H I J K 11.1125 (4-3/8)

3.8 (1-1/2)

10.16 (4)

1.5875 (5/8)

3.4925 (1-3/8)

4.445 (1-3/4)

2.42 (1)

3.4925 (1-3/8)

0.47625 (3/16)

10.16 (4)

4.11275 (1-5/8)

FIGURE-II

NOTE-1: APPLICATION OF LOAD TEST MUST CONICIDE WITH CENTRE LINE OF TESTING MACHINE. NOTE-2: AMGLE OF DEFLECTION SHALL BE DETERMINED BY THE INTERSECTION OF CENTRE LINE OF AXIS OF THE BOLT IN ITS INITIAL POSITION, WITH A LINE DRAWN THROUGH CENTRE POINT OF THE BOLT AT THE DEFLECTED POSITION & THE UPSET SOULDER NEAREST MOUNTING SUPPORT. TYPE OF INSULATOR BOLT LEVER ARM MIN. LOAD AT TEN DEGREEES

DEFLECTION Single upset bolt 4.1275 cm(1-5/8”) 862 Kg(1900 Lbs) Double upset bolt 7.62 cm (3”) 363 Kg(800 Lbs) Single & double upset spool insulator bolts & nuts shall, without defecting more than ten degrees under load, develop load, develop strengths shown in above when tested by the method shown & described in REB’s standard & ANSI C135.31-1980. The load shall be applied at a rate of approximately 0.4 inch per minute free running cross head speed of the testing machine.


STEEL CROSS-ARM BRACES Material: Strength: Tolerance: Finish :

Hot-Rolled Steel as per ASTM A570 and NEMA PH6. Minimum tensile strength at bolt hole is 3175 Kg. with 10 degree bending at bolt hole and 140 degree bending at any other point As specified in the figure-I Hot-Dip galvanized as per ASTM A153 shall bear the manufacturer symbol/ identification mark

Dimension: Flat Brace- All dimensions are specified on drawing (Figure-I) Double Span (“V”) Cross Brass (Fig-II) as per Table-A & figure-II Side arm Brace as per Table-B Test & Inspection: As per ASTM A570 Packing: Flat Brace 20 pieces per package, Double Span Brace 5 pieces per package & Side Arm Brace 1 piece per package.

Origin : BANGLADESH Item No. TRB-410, 420 & 430

FIGURE-2 TECHNO ELECTRICALS LIMITED, UNIT-3 156, Nasirabad Industrial Area, Chittagong-4210

Table-A

(For Figure-II) Dimensions in Cm (Inches)

TOLERANCES DIMENSION

SYMBOL DIMENSION

POSITIVE NEGATIVE L1 152.4 (60) 0.635 (1/4) 0.635 (1/4) L2 76.2 (30) 0.3175 (1/8) 0.3175 (1/8) H 45.72 (18) 0 (0) 0 (0) D1 1.74625 (11/16) 0.07937 (1/32) 0.07937 (1/32) D2 1.42875 (9/16) 0.07937 (1/32) 0.07937 (1/32) W1 3.81 (1- 1/2) 0.15875 (1/16) 0 (0) W2 3.81 (1- 1/2) 0.15875 (1/16) 0 (0) T 0.47625 (3/16) 0.07937 (1/32) 0 (0) A 10.16 (4) 1.27 (1/2) 1.27 (1/2) B 2.2225 (7/8) 0.15875 (1/16) 0 (0)

Figure-III

SIDEARM BRACE


TABLE-B Dimension in cm (inch)

DIMENSION SYMBOL DIMENSION TOLERANCE C1 2.2225 (7/8”) Cx C2 1.905 (3/4”) -- C3 2.2225 (7/8”) -- D1 1.74625 (11/16”) b D2 1.42875 (9/16”) Cx D3 1.74625 (11/16”) b D4 0.9525 (3/8”) -- L1 213.36 (84”) f L2 76.2 (30”) d L3 Centre of 2.225 (3/8”) rivet step

holes 22.866 (9”) d

L4 12.7 (5”) g L5 2.54 (1”) c L6 6.33 (2-1/2”) c L7 2.54 (1”) c L8 11.43 (4-1/2”) d L9 2.54 (1”) c L10 13.97 (5-1/2”) h T1 0.635 (1/4”) -- T2 0.635 (1/4”) -- T3 0.635 (1/4”) -- T4 3.175 (1-1/4) x 0.47625 (3/16”) -- T5 4.445 (1-3/4”) x 4.445 (1-3/4”)

x (3/16”)


a=0.03968, b=0.07937, c=0.15875, d=0.3175, e=0.47625, f=0.635, g=0.9525, h=1.27, x=0 (1/64") (1/32") (1/16") (1/8") (3/16") (1/4") (3/8") (1/2") (0") Single letter Tolerance=±Variation, d±0.125(1/8”) Two Letter Tolerance=+ first Variation, - Second Variation, gb=+0.9525(3/8”), - 0.07935(1/32”),=0.875125(11/32”).


FERROUS WASHERS

Materials Strength

Hot or Cold – Rolled Steel as per ASTM A569, ASTM A570, OR ASTM A635. or , Malleable iron as per ASTM A197 or Ductile type as per ASTM A536 As per Standard according to the type of material used.

Finish : Dimension: Tolerance: Test & Inspection: Packing:

Hot-Dip galvanized as per ASTM A153 As per NEMA PH10 or Table A As specified with the table-A As per Standard ASTM A569, or ASTM A570 or ASTM A635 or ASTM A197 As per table B.

Origin: BANGLADESH

TABLE – A DIMENSIONS OF WASHERS

Item No. Fig No Washer Type

Bolt Size Cm (Inch)

A With Tolerance Cm

(Inch)

B With

Tolerance Cm (Inch)

T With Tolerance

Cm (Inch)

TRB -460 1 Square (Flat) 1.5875 (5/8”) 1.74625 (11/16”) cx

5.715 (2-1/4”)d

0.47625(3/16”)ba

TRB- 480 2 Round 1.27 (1/2”) 1.42875 (9/16”) bx

3.4925 (1-3/8”) bx

0.27781 (7/64”)cb

TRB-490 3 Square (Curved)

1.5875 (5/8”) 1.74625 (11/16”) cx 7.62 (3”) d 0.635(1/4”)cb

TRB-1100 3A Square(Curved)

1.905 (3/4”)

2.06375 (13/16”)cx 10.16 (4”)d 1.27 (1/2”)cb

TRB-1180 1 Square (Flat) 1.5875 (5/8”)

2.06375 (13/16 “)cx 5.715 (2-1/4”)d

0.47625 (3/16”)ba


ALLOWABLE VARIATIONS: a =0.03968, b =0.07937, c =0.15875, d =0.3175, e =0.47625, f =0.635, g =0.9525, h =1.27, x=0 (1/64") (1/32") (1/16") (1/8") (3/16") (1/4") (3/8") (1/2") (0") Single Letter Tolerance = ± variation, d ± 0.125(1/8”) Two Letter Tolerance=+First variation, -Second variation, gb=+0.9525(3/8”) -0.079375(1/32”) =0.875125(11/32”)

TABLE – B Ferrous washers shall be securely packaged for shipment. The contents of each Package shall be as follows: REB Item Quantity TRB-460 250 TRB-480 2,000 TRB-490 100 TRB-1100 25 TRB-1180 250


OVAL – EYE NUT Materials : Drop- forged as per ASTM A663, ASTM A675 and ANSI C135.5. Strength : Ultimate strength 5,624 Kg. Tolerance : As specified with the table A. Finish : Hot-Dip galvanized as per ASTM A153 or ASTM A675,


Dimension : As per Table “A” and class 2 of ANSI B1.1 Test & Inspection: As per ASTM A663 and ANSI C135.5 Packing: Each package contains 100 Nos. of Oval Eye Nut

Origin : BANGLADESH

TABLE - A

DIMENSIONS AND STRENGTH OF OVAL EYE NUT

Dimensions in Cm (Inches) Item

No Bolt Size

A B C D E F G

Ultimate Strength

TRB-530

1.5875C

m (5/8”)

7.62 (3”)

3.4925 (1-3/8”)

1.27 (1/2”)

6.35 (2-1/2”)

3.81 (1-1/2”)

4.445 (1-3/4”)

1.905 (3/4”)

5,624 KG (12,400 Lbs)

ALLOWABLE VARIATIONS: a =0.03968, b =0.07937, c =0.15875, d =0.3175, e =0.47625, f =0.635, g =0.9525, h =1.27, x=0 (1/64") (1/32") (1/16") (1/8") (3/16") (1/4") (3/8") (1/2") (0") Single Letter Tolerance = ± variation, d±0.125(1/8”) Two Letter Tolerance=+First variation, -Second variation, gb=+0.9525(3/8”) -0.07935(1/32”) =0.875125(11/32”)


ANCHOR SHACKLE

Material : Anchor:-Drop- forged as per ASTM A 668 . Cotter-Bolt as per ANSI C135.1, Cotter-Key of goods commercial grade brass, stainless Steel, Bronze, hard drawn copper or hard drawn aluminum . Strength : Minimum tensile strength of eye bolt 6,123 Kg. As per ANSI C135.4 paragraph 5.1. Finish : Hot-Dip galvanized as per ASTM A153


Dimension : As per Table “A” Test & Inspection : As per ASTM A668. Packing : package shall contain 100 nos. of Anchor shackle.

Origin : BANGLADESH

TABLE - A

DIMENSIONS & STRENGTH OF ANCHOR SHACKLE

Dimensions Cm (Inches) Item No. A B C D E F

Minimum Tensile Strength

Kg (Lbs)

TRB-550 1.27 (1/2)

8.89 (3-1/2)

3.81 (1-1/2)

1.905 (3/4)

1.5875 (5/8)

4.1275 (1-5/8) 6123 (13,500)


FORMED GUY STRAP Material : Hot- Rolled Steel as per ASTM A570. Strength : Minimum strength at 45 degree is 4,536 Kg. as per NEMA PH11 according to the figure II Tolerance : As specified with the table A Finish : Hot-Dip galvanized as per ASTM A153,


Dimension : As per Table “A” and Figure-I Test & Inspection : As per NEMA PH11 according to Figure II. Packing: package contains 100 Nos. of formed Guy Strap.

Origin : BANGLADESH

Figure-I

TABLE - A

Dimensions in Cm (Inches) Maximum

Strand Size in Cm (Inches)

Minimum Strength @ 45 deg.

Item No.

W T H DI L RI Minimum

R2 Minimum

TRB-560

3.81 (1-1/2)

0.635 (1/4)

10.4775 (4-1/8)

1.74625 (11/16)

1.42875 (9/16)

0.47625 (3/16)

1.905 (3/4)

1.5875 (5/8)

4,536 Kg 10,000(Lbs)

ALLOWABLE VARIATIONS a =0.03968, b =0.07937, c =0.15875, d =0.3175, e =0.47625, f =0.635, g =0.9525, h =1.27, x=0 (1/64") (1/32") (1/16") (1/8") (3/16") (1/4") (3/8") (1/2") (0")

Single Letter Tolerance = ± variation, d±0.125(1/8”) Two Letter Tolerance=+First variation, -Second variation, gb=+0.9525(3/8”) -0.07935(1/32”), =0.875125(11/32”)

TECHNO ELECTRICALS LIMITED, UNIT-3

156, Nasirabad Industrial Area, Chittagong-4210

Figure-II

TESTING APPARATUS


TWIN-EYE ANCHOR ROD

Material : Rod and heavy duty Nuts are of Hot- Rolled Steel as per ASTM A663 or ASTM A 675 . Strength : Tensile strength- Anchor Rod minimum load 7,258 Kg. for TRB-62 and 10,433 Kg. for TRB-63 as per ANSI C135.2 Bending strength- unthread portion of the bent through a 90 degree angle on a radius equal to the rod diameter without breaking. Thread :Threads as per ANSI C135.2 & table A & B.

Finish : Hot-Dip galvanized as per ASTM A 153, shall bear the manufacturer symbol/

identification mark Dimension : As per Table “A” , “B”, “C” and ANSI C135.2 Tolerance : As specified with the Table C. Test & Inspection : As per ANSI C135.2. Other Specification: ANSI B1.1, ANSI B18.2.21 Packing: Each package contains TRB-62 Ten(10) Nos. & TRB-63 five (5) Nos.

Origin : BANGLADESH

TABLE - A

ANCHOR ROD THREAD DIMENSIONS (ROLLED THREADS)

Rod Major Pitch Item

No. Nominal

Rod Size Cm (Inch)

Thread Type

Thread Series and

Class Diameter Minimum Cm (Inch)


Diameter Minimum Cm (Inch)



Diameter Maximu

m Cm(Inch)

TRB- 620

1.5875 (5/8)

Rolled 11-UNS-2A 1.52908 (0.602)

1.56464 (0.616)

1.660144 (0.6536)

1.706372 (0.6718)

1.538732 (0.6058)

1.552702 (0.6113)

TRB- 630

1.9050 (3/4)

Rolled 10-UNS-2A 1.93548 (0.762)

1.88458 (0.742)

1.991614 (0.7841)

2.040636 (0.8034)

1.85547 (0.7305)

1.870456 (0.7364)

Table - B HEAVY NUT T

HREAD DIMENSIONS

Pitch Minor Major Item No.

Nominal Rod

Size Cm (Inch)

Threads Per Cm (Inch)

Diameter Minimum

Cm (Inch)

Diameter Maximu

m Cm(Inch)

Diameter Minimum

Cm (Inch)

Diameter Maximu

m Cm(Inch)



TRB- 620

1.5875 (5/8)

4.3307 (11)

1.613916

(0.6354)

1.632204

(0.6426)

1.514856

(0.5964)

1.563116

(0.6154)

1.763776 (0.6944)

1.7653 (0.695)

TRB- 630

1.9050 (3/4)

3.9370 (10)

1.933702

(0.7613)

1.95326 (0.7690)

1.824482

(0.7183)

1.877822

(0.7393)

2.098802 (0.8263)

2.09804 (0.826)


Table – C

Dimensions Cm (Inches) Item No.

Rod size ‘d’ A B C D E L

TRB-620

1.5875 (5/8)

2.2225 (7/8)

1.5875 (5/8)

0.3175 (1/8)

0.555625 (7/32)

0.9525 (3/8)

243.84 (96)

TRB-630

1.905 (3/4)

2.54 (1)

1.74625 (11/16)

0.396875 (5/32)

0.635 (1/4)

1.27 (1/2)

304.8 (120)


a =0.03968, b =0.07937, c =0.15875, d =0.3175, e =0.47625, f =0.635, g =0.9525, h =1.27, x=0 (1/64") (1/32") (1/16") (1/8") (3/16") (1/4") (3/8") (1/2") (0") Single Letter Tolerance = ± variation, d±0.125(1/8”) Two Letter Tolerance=+First variation, -Second variation, gb=+0.9525(3/8”) -0.07935(1/32”), =0.875125(11/32”)


SOLID FERROUS GROUND ROD

Material : Hot-Rolled High Carbon Steel as per ASTM A663 or ASTM A675.

or Malleable Cast Iron as per ASTM A 47 Strength : Sufficiently strong and rigid to resist bending

Finish : Hot-Dip galvanized as per ASTM A153, shall bear the manufacturer symbol/identification mark Dimension: As per Table “A” and Figure-I. Tolerance : As specified with the Table-A Packing: As per table A

Origin : BANGLADESH

Figure-I


TABLE - A

DIMENSIONS & PACKAGES

Dimensions Item

No. Rod size Cm (Inches)

Rod Length Mt (Feet) Quantity per Package

TRB-650 1.5875 Cm

(5/8”) 2.4384 M (8’)

05

TRB-1290

1.5875 Cm (5/8”)

1.8288 M (6’)

10

TRB-1300

1.5875 Cm (5/8”)

3.0480 M (10’) 05

ALLOWABLE VARIATIONS a = ± 7.62 Cm (1”) b = ± 0.079375 Cm (1/32”)


SECONDARY CLEVIS BRACKET Material : Hot- Rolled open-hearth Steel Strip as per ASTM A570. Clovis Pin will be from Hot-rolled Steel as per ASTM A675. The self locking cotter key shall be made from a non-ferrous metal. Strength : withstand a side load of 453.6 Kg. at 90 degree to the axis of the clevis bolt and mounting bolt without exceeding a test deflection of 0.9525, ultimate strength-2,041.2 Kg.

Finish : Hot-Dip galvanized as per ASTM A 153 shall bear the manufacturer symbol/

identification mark Dimension : As per NEMA PH20 and Table “A” Tolerance: As specified with the table A Test & Inspection : As per strength of ASTM A153. Packing: Each package shall contain 25 Nos. Clevis Brackets.

Origin : BANGLADESH Item No. TRB-720


TABLE - A

CLAVIS DIMENSIONS IN Cm (INCHES) A

B C E F G K R

57.25 (3-3/8)

10.16 (4)

1.74625 (11/16)

0.27686 (0.109)

8.89 (3-1/2)

2.2225 (7/8)

6.985 (2-3/4)

2.54 (1)

ULTIMATE STRENGTH: 2041.2 kg(4500 Lbs) SIDE PULL 453.6 Kg (1000 Lbs)


a =0.03968, b =0.07937, c =0.15875, d =0.3175, e =0.47625, f =0.635, g =0.9525, h =1.27, m=7.62, x=0 (1/64") (1/32") (1/16") (1/8") (3/16") (1/4") (3/8") (1/2") (3”) (0") Single Letter Tolerance = ± variation, d±0.3175Cm(1/8”) Two Letter Tolerance=+First variation, -Second variation, gb=+0.9325(3/8”), -0.07937(1/32”),=0.873125(11/32”)

DIMENSIONS OF CLEVIS PIN IN Cm (INCHES)

B C D E 11.1125 (4-3/8)

2.2225 (7/8)

1.5875 (5/8)

0.635 MIN (1/4 MIN)


SECONDARY SWINGING CLEVIS Material : Hot- Rolled open-hearth Steel Strip as per ASTM A570. Clevis Pin will be from Hot-rolled Steel as per ASTM A675.Self Locking Cotter Key will be of non-ferrous metal. Strength : As per section 10.1 of NEMA PH20, ultimate strength 1360.8 Kg for insulator class 53-2 and 2,041.2 Kg for insulator class 53-4

Finish : Hot-Dip galvanized as per ASTM A153, shall bear the manufacturer symbol/

identification mark Dimension : As per Table “A” and NEMA PH20 Tolerance : As per NEMA PH20 and as specified with the table A Test & Inspection : Test procedure described in section 6 of NEMA PH20 and as per ANSI C29.3 Packing: Each package contains 50 Clevis assemblies.

Origin : BANGLADESH Item No. TRB-730

TABLE - A

Item No. TRB-730

Dimension of Clevis in Cm(Inches)

A B C E F G R 8.5725 (3-3/8)

14.49375 (5-1/16)

1.74625 (11/16)

0.47625 (3/16)

3.81 (1-1/2)

2.2225 (7/8)

2.54 (7/8)

Dimension of Clevis Pin in cm(Inches)

B C D E 11.1125 (4-3/8) 2.2225 (7/8) 1.5875(5/8) 0.635 Min (1/4 Min) ALLOWABLE VARIATIONS:

a =0.03968, b =0.07937, c =0.15875, d =0.3175, e =0.47625, f =0.635, g =0.9525, h =1.27, m=7.62, x=0 (1/64") (1/32") (1/16") (1/8") (3/16") (1/4") (3/8") (1/2") (3”) (0") Single Letter Tolerance = ± variation, d±0.125 (1/8”) Two Letter Tolerance=+First variation, -Second variation, gb=+0.9325(3/8”) -0.07937(1/32”),=0.873125(11/32”)


GROUND ROD CLAMPS

Material : Drop forged Clamp bodies will be made of malleable steel as per ASTM A663 or ASTM A675. The retaining screws will be of steel as per ANSI C135.1 with squire or hexagonal head. Strength: As per strength ASTM A663 or ASTM A675.

Finish: Hot-Dip galvanized as per ASTM A153, shall bear the manufacturer symbol/ identification mark Dimension : As per Figure-I Test & Inspection : As per ASTM A663 Packing: Each package contains 100 Pieces of Ground Rod clamps.

Origin : BANGLADESH

Figure-I

TABLE - A

DIMENSIONS & CLAMP

Dimensions in Cm (Inches) Item No.

A B C D E

TRB-800 3.175 (1-1/4) 1.6668 (21/32)

0.3175 (1/8)

2.54 (1) 1.27X3.81 (1/2 X 1-1/2)


STEEL GROUND PLATES FOR WOOD POLES

Dimension : As per Figure-I and Table-A. Material : Shall be made of hot rolled steel as per ASTM A 570 with grade & carbon content suitable for the requirement of this standard.

Finish : Hot-Dip galvanized as per ASTM A153 Test & Inspection : As per strength of ASTM A570 Other Specification : Zinc coating on Iron and Steel Hardware as per ASTM A153 Packing: Each package shall contain 35 Nos. ground plates.

Origin : BANGLADESH

Figure-I

Table-A

Dimensions (Inches) Cm Packaging

Item No. L W T R1 R2 Pieces Wt(Lbs)

TRB-660 (7-1/2) 19.05

(7-1/2) 19.05

16 ga (1-1/2)

3.81 (2)

5.08 35 145


LOOP DEADEND CLAMP

Material : Top & Bottom Pressure Pad will be castings of high strength aluminium alloy 356 as per ASTM B686 and heat treated to T6 temper as per ASTM B 597. The Spacer will be made of highly conductive aluminum. U-bolts will be from steel as per ASTM A663 or A675. Hex Nuts of Steel as per ANSI B18.2.2. Lock Washers will be hot-dip galvanized as per ANSI B18.21.1 Finish : Hot-Dip galvanized as per ASTM A153

shall bear the manufacturer symbol/ identification mark Dimension : As per Table “A” and Figure-I.

Strength : For two loop dead end clamps- holding strength should be 95% or more of the conductors rated strength, For one loop dead end clamp holding strength 80% of ACSR and 90% of all aluminium conductors. Test & Inspection : As per strength of ASTM A663 or A675 Other Specification : ASTM B686 for alloy casting, ASTM B597 for heat treatment of Aluminum Alloy Packing: Each package contains 100 Nos. assembled clamp.

Origin : BANGLADESH

Figure-I

TABLE - A

CLAMP DIMENSIONS AND CONDUCTOR SIZE

Item No. American Wire Gauze Conductor Range

Conductor Diameter Range - Centimeter

Conductor Diameter Range - Inches

TRB-850 # 3 Through 1/0 ACSR 0.71374-1.01092 0.281-0.398 TRB-860 1/0 Through 4/0- ACSR 1.01092-1.43002 0.398-0.563


CONDUCTOR DEADEND CLAMPS

Material : Clamp Body will be fabricated from high strength aluminium alloy as per ASTM A686. Cotter pin will be stainless steel, hardened aluminum or brass. U- Bolts will be made of Steel as per ASTM A663 or A675. Nuts will be of steel as per ANSI B18.2.2. Lock Washers will be hot-dip galvanized as per ANSI B 18.21.1. Dimension : As per Table “A” Figure I.

Strength: Ultimate body strength according to Table-A for one our. Clamp pulling eye test :- minimum ultimate strength for item RB-132 is 1587.6 kg. and 2721.6 Kg. for Item RB-133. Clamp Slip/pull out test: As per Table B. Finish : Smooth surfaces, free from blemishes and sharp projection and bear manufacturer’s symbol /identification mark. Test & Inspection: As per standard of strength. Packing: Each package shall contain 20 assembled clamps.

Origin : BANGLADESH

Figure I

TABLE - A

Dimensions in MM (Inches) Clamping Ranges in MM (Inches)

Item No. B L W X Min. Max.

Ultimate Body

Strength In Lbs (Kg)

TRB- 1320 101.60 (4)

209.55 (8-1/4)

19.05 (3/4)

12.70 (1/2)

6.35 (0.25)

15.24 (0.60)

7,000 (3,175)

TRB- 1330 139.70 (5-1/2)

266.70 (10-1/2)

25.40 (15/16)

12.70 (1/2)

17.37 (0.684)

21.79 (0.858)

12,000 (5,443)


CLAMP SLIP / PULLOUT TABLE

Table-B

Item No Conductor

Size AAAC

No. of Strand Minimum

Slip / Pullout Tensions Lbs (Kg)

TRB-1320

TRB-1320

TRB-1320

#2

1/0

4/0

7 STR

7 STR

7 STR

1888 (858)

3,005(1,363)

5,785(2,624)

Item No Conductor Size ACSR

No. of Strand Minimum Slip / Pullout Tensions Lbs (Kg)

TRB-1320

TRB-1320

TRB-1320

TRB-1330

TRB-1330

#3

1/0

4/0

336.4 MCM

477 MCM

6/1

6/1

6/1

18/1

26/7

1,518 (689)

2,888(1,310)

5,523(2,205)

6,250 (2,835)

7,633 (3,462)


GROUNDING CLAMP FOR SPC POLE

Material : Drop forged of malleable Steel as per ASTM A663 or ASTM A675. Retaining screw will be of steel as per ANSI C135.1 & shall have square or hexagonal head. Strength : As per ASTM A663 or A675. Threads : As per ANSI B1.1.

Finish : Hot-Dip galvanized as per ASTM A153. Dimension : As per Figure-I. Test & Inspection : As per strength of ASTM A663 or A675. Packing: Each package contains 100 Pieces clamp.

Origin : BANGLADESH

Item No. TRB-1410

All dimensions are in mm Figure-I


TWO BOLT CLEVIS SUSPENSION CLAMP

Dimension: As per Table-A & Figure-I Finish: Smooth surfaces, free from blemishes and sharp projection and bear manufacturer’s symbol /identification mark.

Material: Clamp body: High strength Aluminium alloy as per ASTM B686. U-Bolts & compatible hex nuts shall be made from hot rolled steel and as per ANSI C135.1 & ANSI B18.2.2 Standard. Washer shall comply the requirement of NEMA PH10. Lock washer shall be hot dip galvanized & comply the requirement of ANSI B18.21.1. All clamp components are hot dip galvanized & shall comply with the requirements of ASTM A153.

Thread: As per ANSI C135.1

Strength: Ultimate tensile strength as per Table A

Inspection: As per strength of ASTM B686

Packing: Each package shall contain 20(Nos.) assembled clamp.

Origin: Bangladesh

Figure-I

TABLE A

Conductor Range cm(Inch)

Clamp Dimension cm(Inch) Item No.

Minimum

Maximum A B C D E F

Maximum angle

Ultimate body

strength Kg (Lbs)

TRB-830 1.016 (.40)

2.156(0.85) 19.05 (7-1/2)

6.05875 (2-9/16)

2.38125

(15/16)

1.27 (1/2)

1.5875(5/8)

1.74625(11/16)

30º 7,711(17,0

00)

TRB-840 1.27

(0.50) 2.6416(1.04

)

21.59 (8-1/2)

6.985 (2-3/4)

2.936875 (1-5/32)

1.27 (1/2)

1.5875(5/8)

1.74625(11/16) 30º

11,340(25,000)

TRB-1340

2.54 (1.00)

3.7338(1.47)

23.33625 (9-3/16)

7.9375 (3-1/8)

3.696875 (1-9/16)

1.27 (1/2)

1.5875(5/8)

1.74625(11/16)

22.5º 11,340(25,

000)

TRB-1350

3.175 (1.25)

4.6228(1.82)

25.4(10)

9.36625 (3-

11/16)

4.92125 (1-

15/16)

1.27 (1/2)

1.5875(5/8)

1.74625(11/16) 25º

11,340(25,000)


TRANSFORMER HANGER BRACKETS

Dimension: As per Table-A,B & Figure Finish: Hot dip galvanized as per ASTM

A153 and surface should be smooth and free from blemishes and without sharp edges.

Material: Brackets: As per ASTM A 568/ ASTM A570 Nuts: As per ANSI B18.2.2 Bolts & other: ASTM A153

Test & Inspection: As per ANSI C135.1

Strength: As per Table C.

Origin: Bangladesh

Table-A

Dimension in cm (Inches) For Item No. TRB-870 A B C D E F G H I J K

16.51X30.48 (6-1/2 to 12)

16.51 (6-1/2)

1.5875X5.08 (5/8X2)

1.27X2.54 (1/2X1)

6.35 (2-1/2)

30.48 (12)

43.18 (17)

78.74 (31)

0.635X7.62 (1/4X3)

0.6875X4.7625 (11/16X1-7/8)

0.635X7.62X7.62(1/4X3X3)

Table-B Dimension in cm (Inches) For Item No. TRB-880

A B C D E F G H I J K 16.51X30.48 (6-1/2 to 12)

24.13 (9-1/2)

1.5875X5.08 (5/8X2)

1.27X3.81 (1/2X1-1/2)

6.35 (2-1/2)

30.48 (12)

76.2 (30)

92.25 (37-1/2)

0.9525X10.16 (3/8X4)

0.8125X6.19125(13/16X2-7/16)

0.9525X10.162X10.16(3/8X4X4)


Table C Applied Load Kg (Lbs) Item No. Transformer Bracket Size

(KVA) Test 1 Test 2 TRB-870 3 to 50 608.4 (1,500) 1,360.8 (3,000) TRB-880 75 to 167 1134 (2,500) 2,268 (5,000)


CUTOUT & LIGHTING ARRESTER EXTENSION BRACKETS

Material: Cutout/Arrester extension brackets shall be fabricated from: *New structural quality steel which conforms to ASTM A36. *Hot rolled bar steel in accordance with ASTM A576

Finish: Hot dip galvanized as per ASTM A153 & as per REB Standard. Smooth surfaces, free from blemishes and sharp projection and bear manufacturer’s symbol /identification mark.

Dimension: As per Table-A & Figure-I Strength: As per strength of ASTM A576 and ASTM A36. Inspection: As per ANSI C135.1.

Packing: Each package contains 25(Nos.) assembled brackets.

Origin: Bangladesh

Figure-I TABLE-A

Item No. TRB-900 Dimension in cm(Inches) A B C D E F G H

20.32(8) 33.02(13) 30.48(12) 33.02(13) 1.74625 (11/16)

1.74625X3.175 (11/16X1-1/4)

3.4925 (1-3/8)

5.08(2)

I J K L M N O P 0.9525 (3/8)

30.48 (12)

5.08 (2)

2.54 (1)

0.47625 (3/16)

1.27X3.81 (1/2X1-1/2)

1.27 (1/2)

1.27 (1/2)


TWO BOLT TYPE GUY ATTACHMENTS

Material: Drop forged guy attachment shall be made of malleable Iron produced in accordance with ASTM A197 & NEMA Pub. No.: PH 11.

Finish: Hot dip galvanized as per ASTM A153 Smooth surfaces, free from blemishes and sharp projection and bear manufacturer’s symbol /identification mark.

Dimension: As per Table-A & Table-I Strength: As per strength of ASTM A197 & NEMA PH 11 Minimum strength as per Table A

Testing & Inspection: According to the Figure II.

Packing: Each package shall contain 50(Nos.) attachments.

Origin: Bangladesh

Figure-I

TWO-BOLT TYPE GUY ATTACHMENTS Item No. TRB-1110

TABLE-A Dimensions in Cm (Inches) Maximum

Strand size

Width W

T L1 L2 Thimble DIA,D1

D2 D3 D4

Minimum Strength

@45° or 90° 1.11125 (7/16)

8.89 (3-1/2)

1.905 (3/4)

11.43 (4-1/2)

7.14375 (2-13/16)

3.4925 (1-3/8)

1.74625 (11/16)

1.42875 (9/16)

3.81 (1-1/2)

5,625 kg (12,400 Lbs)


THIMBLE EYE BOLT

Dimension: As per table “A” & Figure in accordance with ANSI B18.2.2 and ANSI C135.1.

Finish: Hot dip galvanized as per ASTM A153 & Smooth surfaces, free from blemishes and sharp projection and bear manufacturer’s symbol /identification mark.

Material: Bolts & Nuts – As per ANSI C135.4 Tolerance: As specified with table A. Strength: Tensile strength-As per section 6 of ANSI C135.4. Bending strength- As per section 6.2 of ANSI C135.4.

Test & Inspection: As per section 6 & 6.2 of ANSI C135.4.

Thread : Bolts- Rolled Thread as per class 2 of section ANSI B1.1 Square Nut- As per ANSI C135.1 Table-8 Thread per square inch-11

Packing: Each package shall contain 50 Pieces of Thimble Eye Bolt.

Origin: Bangladesh

Figure: Thimble Eye Bolt & Square Nut Assembly

TABLE – A

Dimensions(Inches) REB Item No

A B C D E d F R L1 L2

Minimum Tensile

Strength Kg(Lbs)

Threads Per 2.54 cm(Inch)

TRB-230

1.74625 (11/16)

1.74625 (11/16)

0.79375 (5/16)

0.635 (1/4)

0.71437 (9/32)

1.42875 (9/16)

1.5875 (5/8)

0.9525(3/8)

20.32 (8)

10.16 (4)

5,624 (12,400) 11

TRB-240

1.74625 (11/16)

1.74625 (11/16)

0.79375 (5/16)

0.635 (1/4)

0.71437 (9/32)

1.42875 (9/16)

1.5875 (5/8)

0.9525(3/8)

25.4 (10)

10.16 (4)

5,624 (12,400) 11

TRB-250

1.74625 (11/16)

1.74625 (11/16)

0.79375 (5/16)

0.635 (1/4)

0.71437 (9/32)

1.42875 (9/16)

1.5875 (5/8)

0.9525(3/8)

30.48 (12)

15.24(6)

5,624 (12,400) 11

ALLOWABLE VARIATIONS: b=0.07937 cm(1/32”), c=0.15875 cm(1/16”), f= 0.635 cm(1/4”), h=1.27cm(1/2”) Single-letter superscript indicates that plus and minus value are same and double superscript indicates that the plus value is that of the first letter and the minus value is that of the second letter.


THIMBLE – EYE NUT

Material: Drop- forged as per ASTM A663, ASTM A675 and ANSI C135.5

Finish: Hot dip galvanized as per ASTM A153, Smooth surfaces, free from blemishes and sharp projection and bear manufacturer’s symbol /identification mark.

Dimension: As per table “A” and Figure. Tolerance: As specified with the Table A Test & Inspection: As per ANSI C135.1

Strength: As per strength of ASTM A663,A675 and ANSI C135.5 Thread: Thimble nut with unified coarse thread class 2 of ANSI B1.1

Packing: Each package shall contain 50 Pieces of Thimble Eye Nuts.

Origin: Bangladesh

TABLE –A

Dimensions (Inches) REB Item No

Bolt Size

(Inch) A B C D E F R1 R2

Maximum Strand (Inch)

Ultimate Strength Kg (Lbs)

TRB-540

1.5875 (5/8”)

8.255 (3-1/4)

3.81 (1-1/2)

3.81 (1-1/2)

4.7625(1-7/8)

2.225(7/8) 3.4925(1-3/8)

0.635(1/4) 1.5875(5/8) 1.27 (1/2) 5,624.64 (12,400)

ALLOWABLE VARIATIONS: a= 0.03968, b=0.07937 c= 0.15875, d=0.3175, e=0.47625 f=0.635 g=0.9525 h=1.27 x=0

(1/64”) (1/32”) (1/16”) (1/8”) (3/16”) (1/4”) (3/8”) (1/2”) (0”)

Single Letter Tolerance=±Variation, d±0.125(1/8”) Two Letter Tolerance =+First Variation,-Second Variation, gb=+0.9525(3/8”)-0.07935(1/32”),=0.875125(11/32").


STAPLES

Material: Hot–Rolled open hearth or electric furnace Steel as per ASTM A570

Finish: Hot dip galvanized as per ASTM A153

Strength: As per strength of ASTM A570 Dimension: As per table “A” & Figure and ANSI C135.14 Test & Inspection: As per ANSI C135.1

Packing: As per Table-A. Tolerance: As specified with the Table

Origin: Bangladesh

TABLE – A

Dimensions in Cm (Inches) Item no. L A D P

Point type Quantity per package

TRB – 670 3.81

(1-1/2) 0.635 (1/4)

0.3048 (0.120)

0.635 (1/4)

Cut 3,650

TRB - 680 7.62 (3)

2.69875 (1-1/16)

0.635 (1/4)

2.225 (7/8)

ROLLED 1,000

ALLOWABLE VARIATIONS: a= 0.03968, b=0.07937 c= 0.15875, d=0.3175, e=0.47625 f=0.635 g=0.9525 h=1.27 x=0 (1/64”) (1/32”) (1/16”) (1/8”) (3/16”) (1/4”) (3/8”) (1/2”) (0”) Single Letter Tolerance=±Variation, d±0.125(1/8”) Two Letter Tolerance =+First Variation,-Second Variation, cx=+0.15875cm(3/8”)-0 cm (0”)=0.15875 cm(1/16").


TRANSFORMER SECONDARY BRACKETS

Material: Bracket- Hot Rolled Steel as per ASTM A675. Bolt as per ANSI C135.1 & Nut as per ANSI B18.2.2 & ANSI C 135.1.

Finish: Hot dip galvanized as per ASTM A153 & surface should be free from blemishes.

Dimension: As per table “A” and Figure. Test & Inspection: As per ANSI C135.1

Strength: As per strength of ASTM A675.

Packing: Each package contains 50 Nos. of Brackets.

Origin: Bangladesh

Figure: Transformer Secondary Bracket

TABLE-A

Dimension in Cm (Inches)

Item No. TRB-710

Bolt Dimension Bracket Dimensions L1 L2 D L1 L2 H1 H2 W T

15.24(6) 9.525 (3-3/4)

1.27(1/2) 5.08(2) 1.905(3/4) 2.54(1) 4.1275 (1-5/8)

3.175 (1-1/4)

0.79375 (5/16)


LAG SCREWS

Material: Drop forged lag screw material in accordance with ASTM A663 or ASTM A675.

Finish: Hot dip galvanized as per ASTM A153 Smooth surfaces, free from blemishes and sharp projection and bear manufacturer’s symbol /identification mark.

Strength: As per strength of ASTM A663 or A675 Minimum body strength 2,949 Kg. for nominal diameter of 1.27 cm. Thread: As per Table A and Figure.

Dimension: As per table A, B & Figure in accordance with ANSI B18.2.1 and NEMA PH3 Tolerance: As specified with the Table B

Test & Inspection: As per ANSI C135.1 Packing: Each package shall contain 250 Nos. lag screws.

Origin: Bangladesh

TABLE – A

Width Across Flats Width Across Corners Height Nominal

Diameter of Screw cm(Inch)

Basic cm(Inch)

Max. cm(Inch)

Min. cm(Inch)

Max. cm(Inch)

Min. cm(Inch)

Basic cm(Inch)

Max. cm(Inch)

Min. cm(Inch)

1.27 (1/2) 1.905 (3/4)

1.905 (0.725)

1.8415 (0.725)

2.58064 (1.016)

2.5273 (0.995)

0.83343 (21/64)

0.88392 (0.348)

0.78232 (0.308)

TABLE – B

DIMENSION OF LAG SCREW (Item No. TBR-400) Reference Letter Description of Dimensions Dimensions cm(Inches)

E Diameter of Screw 1.27 (1/2) F Width Across Flats 1.905(3/4) G Width Across Points 2.54(1) H Height of Head 0.83343(21/64) J Pilot Drive Point Length 1.27(1/2) L Lag Screw Length 10.16(4) T Minimum Thread Length 6.35(2-1/2)

ALLOWABLE VARIATIONS: a= 0.03968 cm (1/64”), b=0.07937 cm (1/32”) , d=0.3175 Cm (1/8”). Single Letter superscript indicates that plus & minus values are the same, a double letter superscript indicates that the plus value is that of the first letter and the minus value is that of the second letter.


Three Bolt Type Guy Clamp

Material: Bolt material as per ASTM A570 and nut as per ANSI C135.1

Dimension: As per table and figure

Strength: Holding strength as per Table Inspection: As per ANSI C135.1 Thread: Machine rolled thread as per class 2 of ANSI C135.1

Packing: Each package contains 25 (Nos.) three bolt clamp with nut.

Finish: Hot dip galvanized as per ASTM A153 Origin : Bangladesh

Table

Item No.

No. of Bolt

Bolt Dia Cm Inches

Clamp Length Cm Inches

Clamp width Cm Inches

Min. thickness of plate halves Cm (Inches)

Range of guy strand Cm Inches

Holding strength Kg. (Lbs)

Qnty per package

TRB-690

3 1.27 (1/2)

15.24 (6)

3.97 (1-9/16)

1.00 (13/32)

0.635 to0.9525 (1/4 to 3/8)

2,155 (4,750) for ¼” guy wire & 4,899 (10,800) for 3/8” guy wire

25

TRB-700

3 1.5875 (5/8)

15.24 (6)

4.207 (1-21/32)

1.11 (7/16)

1.11125 (7/16)

6,577 (14,500) for 7/16” guy wire

25


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