Ball and socket type suspension porcelain insulators( IEC Class ) |
Type |
XP-40 |
XP-40C |
XP-70 |
XP-70C |
XP-80 |
XP-100 |
IEC Class |
U40B |
U40C |
U70BL |
U70C |
U80BL |
U100BL |
Coupling size |
16 |
16C |
16 |
16C |
16 |
16 |
Dimensions |
Diameter(D) |
mm |
190 |
190 |
255 |
255 |
255 |
255 |
Spacing(H) |
mm |
140 |
140 |
146 |
146 |
146 |
146 |
Leakage distance |
mm |
200 |
200 |
320 |
320 |
320 |
320 |
Mechanical Values |
Combined M&E strength |
kn |
40 |
40 |
70 |
70 |
80 |
100 |
Impact strength |
N.m |
5 |
5 |
6 |
6 |
7 |
7 |
Routine proof test load |
kn |
20 |
20 |
35 |
35 |
40 |
50 |
Electrical Values |
power frequency dry withstand voltage |
kv |
55 |
55 |
70 |
70 |
70 |
70 |
power frequency wet withstand voltage |
kv |
30 |
30 |
40 |
40 |
40 |
40 |
Dry lightning impulse withstand voltage |
kv |
75 |
75 |
100 |
100 |
100 |
100 |
Power frequency puncture voltage |
kv |
90 |
90 |
110 |
110 |
110 |
110 |
Radio influence Voltage Data |
Test voltage RMS to ground |
kv |
7.5 |
7.5 |
10 |
10 |
10 |
10 |
Maximum RIV at 1000kHz |
μv |
50 |
50 |
50 |
50 |
50 |
50 |
Packing and Shipping Data |
Net weight,approximate |
kg |
2.8 |
2.9 |
4.7 |
4.8 |
5.0 |
5.3 |
![Good Quality 40kn U40b Disc Suspension Porcelain Insulator](//www.micstatic.com/athena/img/transparent.png)
U40C(Clevis type) VS U40B(Ball and socket type)