ZW8-12 Outdoor Vacuum Circuit Breaker
Item:ZW8-12 Outdoor Vacuum Circuit Breaker①Strong arc extinguishing ability②Long electrical life③Small size and light weight④Three-phase common box type⑤Protection...
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ZW8-12
ZW8-12 Outdoor Vacuum Circuit Breaker （ZW8-12F、ZW8-12、ZW8-12G 、ZW8-12M ） is a three-phase common box type, the three-phase vacuum interrupter is placed in a metal box, and the SMC insulating material is used for phase-to-phase insulation and ground insulation, with reliable performance and high absolute strength.
Model Description
Z:Vacuum circuit breaker
W:Outdoor
8:Design Number
12:Rated voltage:12kV
▢: F:intelligeht type/blank(mannual type)/G:disconnector type
▢: Rated current:630A
▢: Rated short-circuit breaking current :20kA
Working Environment：
◆Ambient air temperature: -25℃～40℃;
◆Altitude: no more than 2000m;
◆The surrounding air can be polluted by dust, smoke, corrosive gas, steam or salt spray;
◆The wind speed does not exceed 34m/s;
◆Vibration or ground motion from outside of switchgear and control equipment can be ignored;
◆ Pollution level: Ⅳ.
Main Technical Parameters
|
Parameter |
Unit |
Value |
|
Rated voltage |
kV |
12 |
|
Rated current |
A |
630 |
|
Power frequency withstand voltage |
kV |
42、48 |
|
Lightning impulse withstand voltage (peak) |
kV |
75、85 |
|
Rated short-circuit breaking current (RMS) |
kA |
20 |
|
Rated short-circuit making current (peak value) |
kA |
50 |
|
Nominal Operation Sequence |
|
O-0.3S CO 180S CO |
|
Rated short-circuit current breaking times |
time |
≥30 |
|
Mechanical life |
time |
10000 |
|
Rated operating voltage (closing/opening coil) |
|
DC220V AC220V |
|
Allowable wear thickness of moving and static contacts |
mm |
3 |
|
Isolation fracture breaking distance |
mm |
> 200 |
Structure And Mounting Dimensions
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