ANSI CLASS

56-1

56-2

56-3

56-4

56-5

Main Dimension(mm)

H

146

165

191

241

318

h

50.8

50.8

50.8

50.8

63.5

D

191

228

267

305

343

d

34.9

34.9

34.9

34.9

34.9

R1

19

19

19

19

19

R2

14

14

14

14

14

Leakage Distance (in)

13

17

21

27

34

Dry Arcing Distance (in)

7

8

9

11

14

Low Frequency

Voltage

Dry Flashover

95

110

125

140

175

Wet Flashover

60

70

80

95

125

Puncture

130

145

165

185

225

Critical Impulse

Flashover Voltage

Positive/kV

150

175

200

225

270

Negative/kV

190

225

265

310

340

Radio

Influence

voltage

Test Voltage to ground/kV

15

22

30

30

44

Maximum RIV at 1000kHz/uV

Plain

8000

12000

16000

16000

25000

Radio Freed

100

100

200

200

200

Cantilever Strength (lb)

2500

3000

3000

3000

3000