| Insulator type | AC Anti-pollution type (double-shed) | ||||
| GB standard No. | XWP-210 | XWP3-210 | XWP-240 | XWP-300 | |
| Specified mechanical load (kN) | 210 | 240 | 300 | ||
| Class | U210BSP | U210BSP | U240BSP | U300BP | |
| Nominal unit spacing (mm) | 170 | 170 | 170 | 195 | |
| Nominal diameter (mm) | 300 | 350 | 350 | 330 | |
| Nominal creepage distance (mm) | 450 | 525 | 525 | 480 | |
| Ball & socket size | 20/24 | 20 | 24 | 24 | |
| Electro mechanical failing load (kN) | 210 | 210 | 240 | 300 | |
| Mechanical routine test load (kN) | 105 | 105 | 120 | 150 | |
| Power frequency withstand voltage | Dry kV | 80 | 90 | 90 | 85 |
| Wet (kV) | 45 | 50 | 50 | 47 | |
| Lightning impulse withstand voltage (kV) | 130 | 135 | 135 | 130 | |
| Power frequency puncture voltage (kV) | 130 | 130 | 130 | 130 | |
| Radio interference voltage | Test voltage to ground (kV) | 10 | 10 | 10 | 10 |
| Max. RIV at 1MHz μV | 50 | 50 | 50 | 50 | |
| Weight (kg) | 11.5 | 13.5 | 14 | 14.5 | |
| Applicable standard: GB IEC AS BS IS | |||||
