| Insulator type |
AC normal type |
| GB standard No. |
XP-70 |
XP-70C |
XP1-70 |
XP4-70 |
| Fig |
1 |
2 |
1 |
1 |
| Specified mechanical load (kN) |
70 |
| Class |
U70BL |
U70C |
U70BS |
U70BL |
| Nominal unit spacing (mm) |
146 |
146 |
127 |
146 |
| Nominal diameter (mm) |
255 |
255 |
255 |
270 |
| Nominal creepage distance (mm) |
295/320 |
295 |
295/320 |
330 |
| Ball & socket size |
16 |
16C |
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) |
70 |
70 |
70 |
70 |
| Wet (kV) |
40 |
40 |
40 |
40 |
| Lightning impulse withstand voltage (kV) |
100 |
100 |
100 |
100 |
| 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) |
4.7/4.9 |
4.7 |
4.7/4.8 |
5.0 |
| Applicable standard: GB IEC AS BS IS |
Service Tel: 86-799-7616888
