| Insulator type | AC normal type | ||||
| GB standard No. | XP-210 | XP3-210 | XP4-210 | XP-225 | |
| Fig | 1 | 2 | 1 | 2 | |
| Specified mechanical load (kN) | 210 | 210 | 210 | 225 | |
| Class | U210BS | U210BS | U210BS | U225B | |
| Nominal unit spacing (mm) | 170 | 170 | 170 | 170 | |
| Nominal diameter (mm) | 280 | 300 | 300 | 280 | |
| Nominal creepage distance (mm) | 335/380 | 370/400 | 330 | 380 | |
| Ball & socket size | 20/24 | 20/24 | 20 | 20 | |
| Electro mechanical failing load (kN) | 210 | 210 | 210 | 225 | |
| Mechanical routine test load (kN) | 105 | 105 | 105 | 112.5 | |
| Power frequency withstand voltage | Dry kV | 70/75 | 75 | 70 | 75 |
| Wet (kV) | 40/42 | 42 | 40 | 42 | |
| Lightning impulse withstand voltage (kV) | 105 | 110 | 105 | 105 | |
| 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) | 9.5/10.8 | 10.8/11 | 10.6 | 11.2 | |
| Applicable standard: GB IEC AS BS IS | |||||
