BS 3288-2:1990

Foreword
Committees responsible
Specification
1. Scope
2. Performance and general requirements
3. Dimensions and tolerances
4. Insulator pins
5. Line post insulator studs
6. Insulator set fittings
7. Termination fittings and suspension clamps for
     conductors
Appendices
A. List of insulator set fittings
B. List of insulator set fittings in order of
     reference number
Tables
1. Insulator pins
2. Dimensions of insulator pin with large steel head
3. Details of pilot insulator pin
4. Dimensions of ring gauge for head of insulator pin
5. Dimensions of bow shackle: reference numbers 15/29,
     28/29, 42/29, 42/103, 67/103, 15/129 and 42/129
6. Dimensions of dee shackle: reference number 28/108
7. Dimensions of shackle: reference numbers 28/34,
     42/34 and 67/34
8. Dimensions of ball-ended eye link: reference
     numbers 15/30, 28/30 and 42/30
9. Dimensions of ball clevis: reference numbers 15/83,
     28/83 and 84/83
10. Dimensions of ball tongue: reference numbers 67/48
     and 84/48
11. Dimensions of socket clevis: reference numbers
     15/84, 28/37, 42/37, 42/46, 42/104 and 84/37
12. Dimensions of socket clevis (with arcing horn
     attachment): reference numbers 15/31, 28/31 and
     42/31
13. Dimensions of socket tongue (with arcing horn
     attachment): reference numbers 15/35, 28/36A,
     28/36B, 28/36C, 28/135, 42/35 and 42/36
14. Dimensions of clevis tongue: reference numbers
     42/28A, 42/28B and 42/28C
15. Dimensions of clevis tongue: reference numbers
     42/39A, 42/39B, 42/54A, 42/54B and 42/139
16. Dimensions of twisted clevis-clevis: reference
     numbers 15/23, 28/23, 67/23 and 84/23
17. Dimensions of adaptor: reference numbers 15/27B,
     15/27C, 15/27D, 28/27B, 28/27C and 28/47
18. Dimensions of clevis ends for clamps: reference
     numbers 91A, 91B, 91C, 91D, 91E and 91
19. Dimensions of tongue ends for clamps: reference
     numbers 92A, 92B, 92C, 93A and 93B
20. Dimensions of terminating strap: reference
     numbers 4/89A and 4/89B
21. Dimensions of single link: reference numbers 15/86,
     28/86, 42/86 and 67/86
22. Dimensions of parallel links: reference numbers
     28/88A, 42/88A, 42/88B, 42/88C, 67/88 and 84/88
23. Dimensions of parallel conversion links: reference
     numbers 28/89, 42/89 and 67/89
24. Dimensions of cranked links: reference numbers
     15/87, 28/87, 42/87 and 67/87
25. Dimensions of cranked links: reference numbers
     42/102 and 84/102
26. Dimensions of landing plate: reference numbers
     15/21, 28/21 and 42/21
27. Dimensions of yoke plate: reference numbers
     28/22, 42/22 and 42/124
28. Dimensions of suspension clamp body and closed
     type strap for line and earth conductors: keeper
     type and closed type strap
29. Dimensions of suspension clamp body and open type
     strap for line and earth conductors: keeper type
     corona free and open type strap
30. Dimensions of suspension clamp body and straight
     type strap for line and earth conductors: two-
     part corona free and straight type strap
31. Dimensions of sag adjuster/shackle pins H, L and M
     complete with washers and split pins
32. Dimensions of sag adjuster pins/bolts P, Q, R and S
33. Dimensions of spacer for sag adjuster pins/bolts
     R and S
34. Dimensions of clevis pin and split pin
35. Dimensions of bolt and split pin
Figures
1. Dimensions of small steel insulator pin head
2. Dimensions of large steel insulator pin head
3. Insulator pin with small steel head: reference
     number 23
4. Insulator pin with large steel head
5. Pilot insulator pin
6. Ring gauge for head of insulator pin
7. Shackle: reference numbers 15/29, 28/29, 42/29,
     42/103, 67/103, 15/129, 42/129 and 28/108
8. Shackle: reference number 15/33
9. Shackle: reference numbers 28/34, 42/34 and 67/34
10. Ball-ended hook: reference number 4/88
11. Ball-ended hook: reference number 15/32
12. Ball-ended hook: reference number 15/81
13. Ball-ended eye link: reference numbers 15/30,
     28/30 and 42/30
14. Ball-ended eye link: reference number 15/82
15. Ball-ended eye link (twisted): reference number
     42/44
16. Ball clevis: reference numbers 15/83, 28/83 and
     84/83
17. Ball clevis: reference number 15/25
18. Ball clevis: reference number 84/25
19. Ball tongue: reference numbers 67/48 and 84/48
20. Socket clevis: reference numbers 15/84, 28/37,
     42/37, 42/46, 42/104 and 84/37
21. Socket clevis (with arcing horn attachment):
     reference numbers 15/31, 28/31 and 42/31
22. Socket clevis (with arcing horn attachment):
     reference number 42/45
23. Socket clevis (with arcing horn attachment):
     reference number 67/31
24. Socket clevis (with arcing horn attachment):
     reference number 84/31
25. Twisted socket clevis (with arcing horn attachment):
     reference number 28/131A
26. Socket tongue (with arcing horn attachment):
     reference numbers 15/35, 28/36A, 28/36B, 28/36C,
     28/135, 42/35 and 42/36
27. Socket tongue (with arcing horn attachment):
     reference number 42/51
28. Socket tongue: reference number 15/85
29. Clevis-tongue: reference number 28/28
30. Clevis-tongue: reference numbers 42/28A, 42/28B and
     42/28C
31. Clevis tongue: reference numbers 42/39A, 42/39B,
     42/54A, 42/54B and 42/139
32. Earthwire adaptor: reference number 28/50A
33. Earthwire adaptor: reference number 28/40A
34. Twisted clevis-tongue: reference number 42/27
35. Twisted clevis-clevis: reference numbers 15/23,
     28/23, 67/23 and 84/23
36. Twisted clevis-clevis: reference number 28/24

37. Twisted clevis-clevis: reference number 42/23
38. Adaptor: reference numbers 15/27B, 15/27C, 15/27D,
     28/27B, 28/27C and 28/47
39. Clevis ends for clamps: reference numbers 91A,
     91B, 91C, 91D, 91E and 91
40. Tongue ends for clamps: reference numbers 92A, 92B,
     92C, 93A and 93B
41. Terminating strap: reference numbers 4/89A and 4/89B
42. Strap section and terminal: reference number 4/90
43. Single link: reference numbers 15/86, 28/86, 42/86
     and 67/86
44. Single conversion link: reference number 42/115
45. Parallel links: reference numbers 28/88A, 42/88A,
     42/88B, 42/88C, 67/88 and 84/88
46. Parallel conversion links: reference numbers 28/89,
     42/89 and 67/89
47. Cranked links: reference numbers 15/87, 28/87,
     42/87 and 67/87
48. Cranked links: reference numbers 42/102 and 84/102
49. Cranked links: reference number 28/186A
50. Landing plate: reference numbers 15/21, 28/21 and
     42/21
51 to 58. Sag adjuster plates: various reference numbers
59 to 71. Yoke plates: various reference numbers
72. Cruciform yoke plate: reference number 84/38
73. Yoke plate: reference number 84/43
74. Suspension clamp body and closed type strap for
     line and earth conductors: keeper type and closed
     type strap
75. Suspension clamp body and open type strap for line
     and earth conductors: keeper type corona free and
     open type strap
76. Suspension clamp body and straight type strap for
     line and earth conductors: two-part corona free
     and straight type strap
77. Sag adjustor assembly with 190 kN insulator units:
     single conductor
78. Sag adjuster assembly with 190 kN insulator units:
     vertical pair of conductors
79. Sag adjuster assembly with single 400 kN insulator
     units: vertical pair of conductors (two sag
     adjustors)
80. Sag adjuster assembly with 300 kN insulator units:
     single conductor
81. Sag adjuster assembly with single 400 kN insulator
     units
82. Sag adjuster assembly with single 400 kN insulator
     units: vertical pair of conductors (single sag
     adjusters)
83. Sag adjuster/shackle pins H, L and M complete with
     washers and split pins
84. Sag adjuster/link pin J complete with washer and
     split pin
85. Sag adjuster pins/bolts P, Q, R and S complete with
     washer and split pin
86. Spacer for sag adjuster pins/bolts R and S
87. Typical arcing horn flag
88. Clevis pin and split pin
89. Bolt and split pin

Gives requirements for a range of insulator and conductor fittings for overhead power lines. Includes sections on performance and general requirements, dimensions and tolerances, insulator pins, line post insulator studs, insulator set fittings and termination fittings and suspension clamps for conductors.