General Introduction
LW3-12 I II III type outdoor SF6 circuit breaker is a new type outdoor high voltage electrical equipment which takes SF6 gas as its arc extinguishing and insulation medium. There are three types of operating mechanism-I type manual energy storage spring operating mechanism, II type motor energy storage spring operating mechanism and III type DC electromagnetic operating mechanism.
Compared with other 12kV outdoor circuit breaker, LW3-12 outdoor SF6 circuit breaker is simple in
structure with good arc extinguishing and insulation performance.
With LW3-12 SF6 circuit breaker, users can reduce cost, eliminate danger of fire and improve the reliability of electric system.
Technical Specification
- Rated Voltage: 12kV
- Rated Frequency: 50Hz
- Rated Current: 630A
- Rated Short-circuit Breaking Current: 20kA
- Rated Short-time Withstand Current: 20kA/4s
- Rated Peak Withstand Current: 50kA
- Operating Mechanism: Spring operating mechanism
- Installation Type: Pole mounted outdoor type
- SF6 Gas Insulation: Sealed fully enclosed structure
- Ambient Temperature: -30℃ ~ +40℃
- Altitude: ≤1000m
RatedVoltage
(kV)
|
Rated
Current(A)
|
Rated
Short-circuitBreaking
Current
(kA)
|
Rated
Short-circuit Closing
Current
(kA)
|
Rated
Peak
Withstand
Current
(kA)
|
Rated
Short-circuit
Withstand
Current
(kA)
|
Rated
Short-circuit
Duration
Time
(S)
|
Rated
Short-circuit
Current
Breaking
Times
(times)
|
Weight(kg)
|
12
|
400
630
1250
|
6.3
8
12.5
16
|
16
20
31.5
|
16
20
31.5
|
6.3
8
12.5
16
|
4
|
30
|
I type 122 II type 130
III type 132
|
Applications
Suitable for 12kV urban & rural power grid, overhead distribution lines, industrial and mining enterprises, residential community power supply, outdoor substation incoming and outgoing line protection and sectional switching.
Our Service
We offer OEM, customized technical parameters, installation drawings and global after-sales technical support. All products comply with international standards with reliable quality and competitive factory price.