Tengfei Electric Co., Ltd.
Main products:Meter Box,Distribution Box,Electrical Enclosure
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  • Contact Person : Mr. Wu Fandy
  • Company Name : Tengfei Electric Co., Ltd.
  • Tel : 86-577-6278 6208
  • Fax : 86-577-6277 9136
  • Address : Zhejiang,Wenzhou,17# Tengfei Rd, Dongfeng Industrial Zone, Liushi Town, Yueqing City, Wenzhou, Zhejiang, china
  • Country/Region : China
  • Zip : 325604

LW8-40.5 Sulphur hexafluoride high voltage circuit breaker

LW8-40.5 Sulphur hexafluoride high voltage circuit breaker
Product Detailed
high voltage circuit breaker -Excellent insulation and arcing performances; -Best price and quickly delivery.

 LW8-40.5 Series Sulphur hexafluoride high voltage circuit breaker

  

Main technical data

No.

Name

Unit

Data

1

Rated voltage

kV

40.5

2

Rated insulation level

Lightning impulse withstand voltage (full-wave peak)

kV

185/215 (across isolating distance)

Power frequency withstand voltage (rms1min)

95/118 (across isolating distance)

3

Rated frequency

Hz

50

4

Rated current

A

1600

2000

5

Rated short time withstand current

kA

25

31.5

6

Rated peak withstand current

kA

63

80

7

Rated short-circuit breaking current

kA

25

31.5

8

Rated short-circuit making current (peak)

kA

63

80

9

Rated out-of-phase breaking current

kA

6.3

8

10

Rated short-circuit duration

s

4

11

Rated operating sequence

 

O-0.3s-CO-180s-CO

12

Rated switching single capacitor bank current

A

400

13

Total breaking times at rated short-circuit breaking current

time

20

14

Mechanical life

time

6000

15

Opening time under rated operating voltage

s

≤0.06

16

Closing time under rated operating voltage

s

≤0.10

17

Rated pressure of SF6 gas at 20°C

Mpa

0.45

18

Alarm pressure of SF6 gas at 20°C

0.42

19

Blocking pressure of SF6 gas at 20°C

0.40

20

Annual leakage rate of SF6 gas

 

≤1%

21

Moisture content of SF6 gas at 20°C

PPm(v/v)

≤150

LW8-40.5 Sulphur hexafluoride high voltage circuit breaker



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