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

LW34B-40.5 Series Outdoor High Voltage SF6 Circuit Breaker

LW34B-40.5 Series Outdoor High Voltage SF6 Circuit Breaker
Product Detailed
It is designed for control and protect large and mediumized power station, substation and industrial and mining enterprises. It

1.General Description:

  Latest design, simple structure, small occupying area, easy erection , low noise, high reliability, high energy-storing efficiency (energy storing time is not more than 15s), applicable for various environment.

 The interrupter makes use of the principle to extinguish the arc by the energy itself, takes the structure of small-diameter puffing cylinder, variable clearing distance and double-direction blast, which increases the pressure of SF6 gas in puffing cylinder by making use of block effect of arc to extinguish the arc.The circuit breaker is operated by full spring mechanism, structure is impact, connection between the mechanism and circuit breaker itself is easy, mechanical properties of the circuit breaker is determined by designed structure, adjustment is not necessary on site.

 The transmission between poles is through double pull rods, which reduces the impact to the interrupter, and increases the service stability of circuit breaker.

The wiring terminal is arranged as the shape of , which make the connection of incoming and outgoing line is very flexible.

Due to optimized design and high insulating level, the interrupter takes lower SF6 operating pressure when breaking identical short-circuit current, and makes ambient temperature for the circuit breaker reach to -40~+40.Technical data:

2.Main technical Data

Item

Unit

LW35-72.5

LW35-126

Rated voltage

kV

72.5

126

Rated frequency

Hz

50

Rated current

A

3150

Rated short-circuit breaking current

kA

31.5

40

Short-line fault breaking current

kA

28.5

30/36

Rated short-time withstand current (3s)

kA

40

Rated peak withstand current

kA

100

Rated out-of-phase breaking current

kA

8

10

Rated line charging breaking current

A

10

31.5

Rated SF6 gas pressure (at 20)

MPa

0.4

0.5

Resistance of main circuit

μΩ

≤40

≤45

Rated operating sequence

 

O-0.3s-CO-180s-CO

Mechanical endurance

time

3000

Annual leakage rate of SF6 gas

%

≤1

Moisture content in SF6 gas (V/V)

ppm

≤150 (when leave the factory)

Creeping distance (mm) /creeping ratio (cm/kV)

Across the breaker

 

2300/3.1

3950/3.1

To earth

 

2300/3.1

3950/3.1

LW34B-40.5 Series Outdoor High Voltage SF6 Circuit Breaker



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