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LW3 outdoor high voltage SF6 circuit breaker

The product is a three-phase AC outdoor high-voltage circuit breaker equipment, three-phase common box structure, using SF6 arc extinguishing, phase-to-phase SF6 insulation, mainly used in urban and rural overhead power distribution network, split load, fault and short-circuit current. The product adopts rotary arc extinguishing principle, built-in 35mm breaking fracture, circuit breaker and operating mechanism as an integral structure, with simple structure, reliable arc extinguishing and insulation performance, low operating power, high rated parameters, long electrical life and maintenance-free cycle and other significant advantages, suitable for small and medium-sized power stations as control and protection. With the hezong HZD300F series feeder terminal, distribution automation can be realized.
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Product Parameters

Performance characteristics

(1) Three-phase common box type, simple structure, compact layout, circuit breaker with electric operating mechanism and distribution automation interface, control interface using aviation connector.

(2) The power output is a rotating type, and the sealing effect is good.

(3) The application of rotating arc technology improves the arc extinguishing efficiency and electrical life.

(4) The independence of the body structure, the shell has sufficient rigidity and good anti-rust performance,Adopting thickness ≥3mmof304Stainless steel material manufacturingThe protection grade of the shell reaches IP67.

(5) Special arrangement and configuration can be carried out according to user requirements without variable ratio protection and measuring transformer.

(6) With low air pressure alarm function, in case of air leakage, the circuit breaker will not be able to be opened and closed with electricity to ensure safety.

 

 

Technical parameters

Serial Number

Name

Parameters

1

Type or model

SF6 circuit breaker, LW □

2

Rated voltage (kV)

12

3

Rated current (A)

630

4

Rated frequency (Hz)

50

5

Rated short-circuit breaking current (kA)

20

6

Rated short-time withstand current and duration (kA/s)

20/4

7

Rated peak withstand current （It's khaki)

50

8

Rated short-circuit breaking current (kA)

20

9

Rated short-circuit closing current (kA)

50

10

Rated power frequency 1min withstand voltage

(effective value kV)

Relatively, interphase

42

Interfracture

48

11

Rated lightning impulse withstand voltage

(peak kV)

Relatively, interphase

75

Interfracture

85

12

1min power frequency withstand voltage of secondary circuit (KV)

2

13

Mechanical life (times)

12000

14

SF6 gas pressure Mpa

0.35

15

Annual leakage rate of SF6 gas

≤ 0.01%

16

Temperature rise test current

1.1x630

17

Operating mechanism

Spring

18

Operation mode

Manual/electric

19

Operating voltage

AC/DC 220V、110V、48V、24V

20

Transport weight (kg)

120

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