| Insulator type |
AC normal type |
| GB standard No. |
XP-45C-M |
XP5-70C-M |
XP5-70-M |
XP-70-M |
| Fig |
1 |
2 |
3 |
3 |
| Specified mechanical load (kN) |
45 |
70 |
| ANSI standard No. |
52-1 |
52-2 |
52-2 |
52-3 |
| Nominal unit spacing (mm) |
140 |
146 |
146 |
146 |
| Nominal diameter (mm) |
160 |
200 |
200 |
225 |
| Minimum creepage distance (mm) |
178 |
210 |
210 |
292 |
| Combined M&E strength (kN) |
45 |
70 |
70 |
70 |
| Tension proof test load (kN) |
22.5 |
35 |
35 |
35 |
| Mechanical impact strength (Nm) |
5 |
6 |
6 |
6 |
| Low frequency flashover voltage |
Dry (kV) |
60 |
65 |
65 |
80 |
| Wet (kV) |
30 |
35 |
35 |
50 |
| Critical impulse flashover voltage |
Positive (kV) |
100 |
115 |
115 |
125 |
| Negative (kV) |
100 |
115 |
115 |
130 |
| Low frequency puncture voltage (kV) |
80 |
90 |
90 |
110 |
| Radio interference voltage |
Test voltage to ground (kV) |
7.5 |
10 |
10 |
10 |
| Max. RIV at 1MHz μV |
50 |
50 |
50 |
50 |
| Weight (kg) |
2.5 |
3.6 |
3.6 |
4.6 |
| Applicable standard: ANSI C29.2 |
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