LW36-72.5~252KV Outdoor SF6 Circuit Breaker
Boerstn outdoor self energy high-pressure sulfur hexafluoride circuit breaker(LW36 series) is a three-phase ac 50/60 Hz outdoor high voltage electric transmission and transformation equipment, By Opening or closing the rated current and fault current and conversion circuit to realizing the protection,control and operation of the power transmission and transformation system. The product can open or close brake and operate the auto reclosing very fast and realize the linkage of three pole electric
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Product description

  • The circuit breaker using the latest design principle, And it has much feature such as simple construction,small volume material consumption, It is necessary to the operation of the energy is small and high reliability,easy to install,low noise and so on. It is developed a new generation of high-pressure sulfur hexafluoride circuit breakerby ourselves.

Service environment

  • 2.1 Ambient temperature:  -40℃--+ 50℃
    2.2 Wind pressure:≤700 pa
    2.3 Altitude:≤3000m
    2.4 Seismic intensity:≤9degrees
    2.5 Air polluted degree: level Ⅲ

Main technical parameter

No.

Name

Main technical parameters

1

Rated voltage, KV

72.5,126, 145, 245 , 252

2

Rated insulation level,kV

230/550

3

Rated frequency,Hz

50/60

4

Rated current,A

1250~3150

5

Rated short circuit breaking current,kA

31.5/40

6

Rated short-time withstand current,kA

31.5/40

7

Rated peak withstand current,kA

100

8

Rated short time continual time,s

3

9

Rated peak withstand current,kA

100

10

Short-line fault breaking current,kA

30/36

11

Rated clearing energized current,A

125

12

Rated out-of-phase breaking current,kA

10

13

Accumulative opening times of rated short circuit on power flow,time

20

14

First pole to clear factor

1.3

15

Pressure of SF6-gas(20℃),MPa

0.5

16

The rated voltage of control circuit and auxiliary circuit

AC/DC110V、AC/DC220V、AC/DC48V

Outline Dimension(LW36-126KV)

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