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Copyright ® Henan pinggao Electric Co.,Ltd         豫ICP备05010380号

Company name: henan pinggao electric co. LTD

Address: Henan province of pingdingshan city

south ring road 22

Mail editor: 467000
E -  mail : pinggao@pinggao.esgcc.com.cn

400-6700-312

PRODUCT

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PRODUCTS

LW35-72.5/126/145/252 SF6 Circuit Breaker

Description

Brief Description

LW35 serial circuit breakers, including LW35-72.5, LW35-126, LW35-145 and LW35-252 products, are designed with self-energizing principle that arc generated in the interrupter is distinguished at a specified time with a part of energy produced by the arc itself. They are used for making and breaking normal current, fault current and switching lines to realize the operation (three-pole opening&closing operation and fast automatic-reclosing operation),  control and protection of power system. 

Main Features

1        Less consumption of SF6 gas, benefitial for environmental protection. When other kinds of circuit breaker at 0.6 MPa must be filled with SF6 of 27 kg/set, this kind of circuit breaker only need 19.3 kg/set.

2        Dynamic sealing system adopts advanced Glyd ring and Step seal to reduce starting friction and prevent leakage.

3        Adopt imported control valve of stable performance and anti-slow-opening function in case of pressure loss.

4        Two sets of independent opening control circuit are adopted in hydraulic mechanism with two sets of relay protection to enhance service reliability.


Technical Parameters
Specifications
Unit
Value
Rated voltage
kV
72.5
126
145
252
Rated current
A
3150/4000
Rated frequency
Hz
50/60
Rated short-time withstand current (r.m.s)
kA
50
Rated peak withstand current
kA
125
1 min power frequency withstand voltage (r.m.s)
To earth/Between phases
kV
140
230
275
460
Across isolating distance
kV
160
300
315
460 +(145)
Lightning impulse withstand voltage (peak)
To earth/Between phases
kV
325
550
650
1050
Across isolating distance
kV
375
650
750
1050 +(200)
Rated SF6 gas pressure(20℃)
MPa
0.5
0.5
0.5
0.6
Rated SF6 annual leakage
%
≤0.5

 

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暂未实现,敬请期待
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