| Insulator type | AC normal type | ||||
| GB standard No. | XP4-160 | XP7-160 | XP8-160 | XP9-160 | |
| Fig | 1 | 2 | 1 | 1 | |
| Specified mechanical load (kN) | 160 | ||||
| Class | U160BN | U160BL | U160BS | U160BM | |
| Nominal unit spacing (mm) | 155 | 170 | 146 | 155 | |
| Nominal diameter (mm) | 300 | 280 | 280 | 280 | |
| Nominal creepage distance (mm) | 400 | 380/405 | 315 | 315 | |
| Ball & socket size | 20 | 20 | 20 | 20 | |
| Electro mechanical failing load (kN) | 160 | 160 | 160 | 160 | |
| Mechanical routine test load (kN) | 80 | 80 | 80 | 80 | |
| Power frequency withstand voltage | Dry kV | 75 | 75 | 70 | 70 |
| Wet (kV) | 45 | 45 | 40 | 40 | |
| Lightning impulse withstand voltage (kV) | 110 | 110 | 105 | 105 | |
| Power frequency puncture voltage (kV) | 110 | 110 | 110 | 110 | |
| Radio interference voltage | Test voltage to ground (kV) | 10 | 10 | 10 | 10 |
| Max . RIV at 1MHz (μV) | 50 | 50 | 50 | 50 | |
| Weight (kg) | 8.2 | 8.8 | 7.5 | 7.9 | |
| Applicable standard: GB IEC AS BS IS | |||||
