LW8-40.5 Sulphur hexafluoride high voltage circuit breaker

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