ANSI High Voltage Post Insulator
Main Dimensions and Properties:
Class ANSI
57-1S 57-1L
57-2S 57-2L
57-3S 57-3L
57-4S 57-4L
57-5S 57-5L
Creepage Distance (mm)
356
559
737
1015
1143
Dry Arcing Distance(mm)
165
241
311
358
438
Cantilever Failing Load Ib(KN)
12.5
12.5
12.5
12.5
12.5
Low Frequency Dry Flashover(KV)
80
110
25
150
175
Low Frequency Wet Flashover(KV)
60
85
100
125
150
Critical Impulse Flashover, Pos (kv)
30
180
210
255
290
Critical Impulse Flashover,Neg (kv)
155
205
260
340
380
Test Voltage to ground (kv)
15
22
30
44
44
Max. RIV at 1000KHz (kv)
100
100
200
200
200
Weight (kg)
5.0
9.5
11
16
18
Numbers in Standrad Pakage
6
3
3
2
2