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Company Profile

Beijing Huadong Electric Co., Ltd
[China]

Address:
emilylian@huadongswitch.com No.69 LongZhaoshu Nanli, Chaoyang Dist.,Beijing,China Beijing Beijing 100078 China

Phone:
86-10-87697121

Contact name:
emilylian , trader

Beijing Huadong Electric Co., Ltd

Products

	LW-252/3150-50 SF6 Dead Tank Circuit Breaker

LW-252/3150-50 SF6 Dead Tank Circuit Breaker

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Model Number

LW-252/3150-50

1.Rated voltage: 252kV

2.Rated frequency: 50Hz

3.Rated current : 3150 A

4.Rated short-circuit breaking current : 50kA

5.Rated short-circuit makeup current (peak) : 125 kA

6.Rated short-time withstand current : 50kA

7.Rated short-circuit duration :2(3) S

8.Rated peak withstand current :125 kA

9.Near-field fault breaking current L75 L90: 37.5/45 kA

10.Rated phase-out makeup and breaking current: 12.5 kA

11.Rated circuit charge breaking current : 160 A

12.insulation level
1min rated power-frequency withstand voltage kV (virtual value)
over ground: 460kV
between fracture :395+145kV

13.Rated lightning impulse withstand voltage(1.2/50µs) kV (peak)
over ground: 1050kV
between fracture :950+206 kV

14.Rated pull in terminal N
level vertical: 1500

level horizontal: 1000

vertical direction: 1250

15. Creepage distance :6300, 7812 mm

16.Rated operation sequence: O-0.3s-CO-180s-CO

17.Gas rated pressure of SF6 (20) :0.6 MPa

18.Leak rate of SF6 per year ≤ 1 %

19.Moisture content of SF6 gas ≤ 150 µ L/L

20. Continuous breaking times of rated short-circuit breaking current : 20 times

21.Mechanical operation times: 3000 times

22.Break-brake time : 18~25 ms

23.Close-brake time: 80~100ms

24.Break and close time ≤ 0.3 ms

25.Close and break time ≤ 60ms

26. Asynchronism of anode-to-cathode break brake ≤ 3ms

Asynchronism of anode-to-cathode close brake ≤ 5ms

27. Monopole gas weight of SF6 :46 kg