SF6 Circuit Breaker LW-126KV 132KV 145KV Outdoor Types 3 Phase 3 Poles for Electrical Power Supply Equipment Usage

SF6 Circuit Breaker LW-126KV 132KV 145KV Outdoor Types 3 Phase 3 Poles for Electrical Power Supply Equipment Usage

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Product Details

1.Description of SF6 Circuit Breaker LW-126kv 132kv 145kv Outdoor Types

Lw-126kv circuit breaker which is outdoor type finds its universal range of applications for the electrical system with elevation not greater  than 2000m,ambient temperature not lower than -30℃,dirtiness grade not high than IV, alternating current 50Hz and the maximum voltage 126kV. It is used for cutting the rated current, malfunction current or switching the circuitry, to control and protect the electrical system ,and it can also be used for connecting with the circuit breaker.

The gas of the SF6 is employed as the arc-extinguishing medium and the dielectric material. The self-extinction technology and the new-type spring operating mechanism are introduced in the SF6 circuit breaker. Thus the circuit breaker has good qualities with long electrical life, low operation power, lower noise, high reliability, simple structure, small and long overhaul periods. It can fully replace the same type one.

2. Data list

No

Name

Unit

Value

1

Rated voltage

kV

252

2

Rated power frequency

withstand voltage (1min)

To earth

460

Between interrupter

460+146

3

Rated thunder impulse

withstand voltage

To earth

1050

Between interrupter

1050+206

4

Rated frequency

Hz

50

5

Rated current

A

4000

6

Amplitude factor


1.3

7

Rated short-circuit breaking current

kA

50

8

Rated short-circuit making current(peak)

kA

125

9

Rated current withstand current

kA

50

10

Rated peak value withstand value

kA

125

11

Rated short-circuit duration

s

3

12

Rated out-of-phase breaking current

kA

12.5

13

Breaking current of close-in fault

kA

90%lk,75%lk

14

Rated line-charging breaking current

A

200

15

Operating sequence


O-0.3s-CO-180s-CO

16

Resistance other main circuit

μΩ

≤55

17

Rated gauge pressure of SF6(20℃)

Mpa

0.6

18

Minimum functional gauge pressure(20℃)

Mpa

0.550.015/0.50.015

19

Annual leakage rate of SF6


≤0.5%

20

Amount of water of SF6(V/V)

ppm

≤150

21

Mechanical life

times

6000

22

Electrical level of radio interference

μV

<500

23

Creepage distance

To earth

mm

≥8660

Between interrupter

≥6900

24

Weight of the SF6

kg

24

25

Weight of the circuit breaker

kg

1500

3. working Conditon

Surrounding air temperature: -40 ºC ~+40 ºC ; 
The wind speed is not bigger than 34m/s; 
The air filthy should be with in III degreealtitude above sea level does not over 2,000 meters; 
Installing places: Not flammable, the explosion hazard, chemistry corrode place; 

4.Technical diagram

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5. Producton line

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6. Delivery and warranty

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7. FAQ

1.You inquiry will be replied within 24 hours. 
2. Well trained engineer serving to every customers.
3. Accept customer’s drawing and make accordingly
4. 2 years quality warranty and strict inspection in every process
.

8.Contact us

XIGAO Electricenergy Group Co.,LTD.

Add.: No. 6, Weibei Industrial Park, Xi'an City, Shaanxi Pro., CN. 710600 

Phone: 0086 13319220197

Email: emma@zgxgdn.com

WhatsApp: 008613319220197

Skype: sunnysunny12271

Wechat: 13319220197

Website:  www.zgxgdn.cn


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