Ru-Lena Ind. (Holding) Co., Ltd.
Main products:fuse cut out parts,polymer arrester,arrestor disc,ACSR,galvanized steel cable
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  • Contact Person : Mr. Han Daniel
  • Company Name : Ru-Lena Ind. (Holding) Co., Ltd.
  • Tel : 86-0411-39852517
  • Fax : 86-0411-39852510
  • Address : Liaoning,Dalian,1302-1305 Tower B, The Manhattan Tower, No. 101 Youhao Road, Zhongshan Dist.
  • Country/Region : China
  • Zip : 116001

LW10B-252(H)/4000-50 Type SF6 Circuit Breaker

LW10B-252(H)/4000-50 Type SF6 Circuit Breaker
Product Detailed
biggest breaking capacity and the top technical guide line CB with SF6 gas as arc extinguishing medium

1.General Description

LW10B-252(H)/4000-50 type SF6 circuit breaker is independently developed by Pingdingshan High Voltage Switchgear Works, which is the biggest scientific research achievement after LW10B-550/4000-63.It can break short circuit current 50KA with 0.4MPa SF6 /-40.It has the biggest breaking capacity and the top technical guide line CB with SF6 gas as arc extinguishing medium at ambient temperature 40.

Our early products such as LW10B-252/LW6-252 type circuit breakers ,of which breaking current is 40KA on condition that with 0.4MPa SF6 gas and ambient temperature -40. The rated short circuit breaking current of the circuit breaker is 50KA in south China(above -30),but it cannot run normally in the cold weather in north areas.LW10B-252(H)/4000-50 circuit breaker can widely service more than  90% of China areas under any kind of weather condition.

2.Main features

Ambient air temperature :-40/ rated current:4000A/ short circuit breaking current:50KA/opening time:20ms/mechanical endurance:3000/ etc.

 Structure of  LW10B-252(H)/4000-50 circuirt breaker :

Muti-type arc extinguishing chamber and including CYT controlling valve with no oil pipe connecting integration module hydraulic mechanism.

3.Main technical Data

item

description

Unit

LW10B-252(H)

LW10B-252

1

Rated current

A

4000

3150

2

SF6 GAS Pressure(at 20)

MPa

0.4

0.4/0.6

3

Rated short circuit breaking current

kA

50

40/50

4

Opening time

ms

20

32

5

C-O time

ms

5005

60±5

6

Breaking time

frequency

2

2.5

7

Structure of arc extinguishing chamber

 

Composite pressing gas type

Pressing gas type

8

Moving distance of arc extinguishing chambers moving contact

mm

230

200

9

Rated oil pressure of operation mechanism

MPa

33

28/26

10

Operating components of operating mechanism

 

CYT controlling valve(including electro-magnet iron/primary valve and secondary valve)

 

11

Coupling oil pipesnumber of operating mechanism

 

1(used coupling oil meter)

11

12

Oil pump

 

Axial motion oil pump,motor make up of a whole body.

Radial motion oil pump,which has each own system with the motor

LW10B-252(H)/4000-50 Type SF6 Circuit Breaker



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