| Insulator type |
AC normal type |
| GB standard No. |
XP-40C |
XP-40 |
| Fig |
1 |
2 |
| Specified mechanical load (kN) |
40 |
| Class |
U40C |
U40BL |
| Nominal unit spacing (mm) |
140 |
110 |
| Nominal diameter (mm) |
190 |
175 |
| Nominal creepage distance (mm) |
200 |
185 |
| Ball & socket size |
|
11 |
| Electro mechanical failing load (kN) |
40 |
40 |
| Mechanical routine test load (kN) |
20 |
20 |
| Power frequency withstand voltage |
Dry (kV) |
55 |
55 |
| Wet (kV) |
30 |
30 |
| Lightning impulse withstand voltage (kV) |
75 |
75 |
| Power frequency puncture voltage (kV) |
90 |
90 |
| Radio interference voltage |
Test voltage to ground (kV) |
7.5 |
7.5 |
| Max . RIV at 1MHz (μV) |
50 |
50 |
| Weight (kg) |
2.5 |
2.3 |
| Applicable standard: GB IEC AS BS IS |
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