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Shackle insulator - In early days, the shackle insulators were used as strain insulators. But now a day, they are frequently used for low voltage distribution lines. Such insulators can be used either in a horizontal position or in a vertical position. They can be directly fixed to the pole with a bolt or to the cross arm.
| ANSI Class | 19360 | 19391 | 19419 | 19450 | 19480 | ||
| Main dimensions (mm) |
H | 54 | 76 | 81 | 76 | 105 | |
| h | 27 | 38 | 40.5 | 38 | 52.5 | ||
| D | 57 | 79 | 76 | 105 | 102 | ||
| d | 44 | 44 | 44 | 73 | 73 | ||
| d1 | 17.5 | 17.5 | 17.5 | 17.5 | 17.5 | ||
| d2 | 22 | 24 | 24 | 24 | 24 | ||
| R | 11 | 17.5 | 11 | 16 | 11 | ||
| Transverse strength (kN) | 8.9 | 13.3 | 17.8 | 20 | 26.7 | ||
| Power frequency flashover voltage (kV) |
Dry | 20 | 25 | 25 | 25 | 35 | |
| Wet | V | 8 | 12 | 12 | 12 | 18 | |
| H | 10 | 15 | 15 | 15 | 25 | ||
| Weight (kg) | 0.2 | 0.5 | 0.6 | 1.05 | 1.2 | ||
| Applicable Standard | ANSI C29.3 | ||||||
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