| Insulator type |
AC anti-pollution type |
| GB standard No. |
XHP-70 |
XHP5-70 |
XHP-80 |
XHP3-80 |
| Fig |
1 |
2 |
1 |
1 |
| Specified mechanical load (kN) |
70 |
80 |
| Class |
U70BLP |
U70BLP |
U80BLP |
U80BMP |
| Nominal unit spacing (mm) |
146 |
146 |
146 |
146 |
| Nominal diameter (mm) |
255 |
280 |
255 |
255 |
| Nominal creepage distance (mm) |
432 |
400/450 |
432 |
432 |
| Ball & socket size |
16 |
16 |
16 |
16 |
| Electro mechanical failing load (kN) |
70 |
70 |
70 |
70 |
| Mechanical routine test load (kN) |
35 |
35 |
35 |
35 |
| Power frequency withstand voltage |
Dry (kV) |
80 |
80 |
80 |
80 |
| Wet (kV) |
42 |
42 |
42 |
42 |
| Lightning impulse withstand voltage (kV) |
120 |
120 |
120 |
120 |
| Power frequency puncture voltage (kV) |
120 |
120 |
120 |
120 |
| Radio interference voltage |
Test voltage to ground (kV) |
10 |
10 |
10 |
10 |
| Max . RIV at 1MHz (μV) |
50 |
50 |
50 |
50 |
| Weight (kg) |
6.5 |
6.0/6.7 |
6.5 |
6.4 |
| Applicable standard: GB IEC AS BS IS |
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