TR Station & Ping Post Insulators

ANSI CLASS

57-11

57-21

57-12

57-22

57-13

57-23

Creepage Distance(mm)

356

356

559

559

737

737

H-Height To Middle of Clamp Assembly

257

276

333

352

400

419

D-Diameter

146

146

160

160

160

160

C-Clamp Throat Width

102

102

102

102

102

102

Dry Arcing Distance(mm)

165

165

241

241

311

311

Cantilever Strength(kN)

12.5

12.5

12.5

12.5

12.5

12.5

Low Frequency Flashover Voltage-Dry(kV)

70

70

100

100

125

125

Low Frequency Flashover Volitage-Wet(kV)

50

50

70

70

95

95

Critical Impulse Flashover Voltage-Pos.,(KV)

120

120

160

160

200

200

Test Voltage to Ground(kV)

15

15

22

22

30

30

Maximum RIV at 1000KHZ(μv)

100

100

100

100

200

200