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33kv High voltage U70 disc toughed glass insulator

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33kv High voltage U70 disc toughed glass insulator has become popular in transmission and distribution system. Annealed tough glass is used for insulating purpose. Glass insulator has numbers of advantages over conventional porcelain insulator

 

33kv High voltage U70 disc toughed glass insulator specification:

IEC designation

U70B/140

Diameter D( mm )

255

Socket coupling( mm )

140

Creepage distance L( mm )

320

Socket coupling( mm )

16

Mechanical failing load( mm )

70

Mechanical routine test( kN )

35

Wet power frequency withstand voltage( kV )

40

Dry lightning impulse withstand voltage( kV )

100

Impulse puncture voltage( P.U )

2.8

Power frequency puncture voltage( kV )

130

Radio influence voltage( µV )

50

Corona visual test( kV )

18/22

Power frequency electric arc voltage

0.12s/20ka

Net weight per unit( kg )

3.6

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Jiangxi Province, China
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Jiangxi Johnson Electric Co., Ltd      Jiangxi ICP No.06050822-1     www.300.cn