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Insulator

This product is suitable for high voltage line facilities,technical reform of city network,polluted area,power facilities,line use,high voltage line hard jumper,high voltage transmission lines,high speed railway and city light rail traffic construction,et

 


Description:

1.No flaw,crack in the surface and interior  ,each bar color uniform(green or light yellow).

2.Can withstand the sawing,milling,planning,drilling,lathe and other mechanical processing.

3.Internal thread can be tapping with screw tap,external thread can be polished,but not allowed to bear overload.

4.It has good damping,creep resistance,fatigue resistance,fracture resistance ,high temperature resistance,stress corrosion resistance etc.

Technical parameters

ANSI CLASS

With long stud

57-1L

57-2L

57-3L

57-4L

57-5L

With short stud

57-1S

57-2S

57-3S

57-4S

57-5S

Fig. No.

1

2

3

4

5

Creepage Distance (mm)

356

559

737

1016

1143

Dry Arcing Distance (mm)

165

241

311

368

430

Cantilever Strength(kN)

12.5

12.5

12.5

12.5

12.5

Power Frequency

Flashover Voltage

Dry /kV

70

100

125

140

160

Wet/kV

50

70

95

110

130

Critical Impulse

Flashover Voltage

Positive/kV

120

160

200

230

265

Negative/kV

155

205

260

340

380

Radio

Influence voltage

Test Voltage to ground/kV

15

22

30

44

44

Maximum RIV at 1MHz/uV

100

100

200

200

200