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Introduction of Line Insulators,Rod insulator,Disc-shaped insulator
Line insulator is used to refer to the transmission line conductors insulated box fixed insulator, insulators for high voltage transmission line has a...The effect of ceramic insulator in transmission line
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porcelain line post insulators
- line post insulators are manufactured and tested to the requirements of ANSI Standard C29.7
- Color:brown and gray
MAIN DIMENSTIONS AND STANDARD PARTICULARS
ANSI Class |
57 -31 |
57-32 |
57-33 |
57-34 |
57-35 |
||
Fig. No. |
1 |
2 |
3 |
4 |
5 |
||
Leakage distance/ mm |
356 |
559 |
737 |
1016 |
1143 |
||
Dry arcing distance/ mm |
165 |
241 |
311 |
368 |
438 |
||
Cantilever strength/ kN |
12.5 |
12.5 |
12.5 |
12.5 |
12.5 |
||
Average flashover voltage |
Low-frequency |
Dry/kV |
70 |
100 |
125 |
140 |
160 |
Wet/kV |
50 |
70 |
95 |
110 |
130 |
||
Critical-impulse |
Positive/ kV |
120 |
160 |
200 |
230 |
265 |
|
Negative/ kV |
155 |
205 |
260 |
340 |
380 |
||
Radio-influence voltage date |
Test voltage to Ground/ kV |
15 |
22 |
30 |
44 |
44 |
|
Maximum RIV at 1.000kc/μV |
100 |
100 |
200 |
200 |
200 |
||
Net weight each approx./kg |
9.5 |
12.5 |
15.7 |
18.8 |
21.5 |
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