| 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 | |||||
