High Votage Line Post Insulator for Electrical Power Systems 57-1

ANSI class

57-1

57-2

57-3

57-4

57-5

Fig no.

1

2

3

4

5

creepage distance-mm

356

559

737

1015

1145

Dry arcing distance-mm

165

241

311

368

438

Mechanical cantilever failing load-KN

12.5

12.5

12.5

12.5

12.5

Cantilever strength routine  test  -KN

5

5

5

5

5

Type application voltage

25

35

45

55

66

low frequency Flashover Voltage

Dry-kv

80

110

125

150

175

Wet-kv

60

85

100

125

150

Critical Impulse Flashover Voltage

Positive-kv

130

180

210

255

290

Negative-kv

155

205

260

340

380

Radio interference voltage

Test voltage to ground-kv

15

22

30

44

44

Max RIV at 1000KHz-uv

100

100

200

200

200

Net weight-kg

5.2

9

11

16

18