| Customization: | Available |
|---|---|
| Type: | High-voltage |
| Structure: | Three-column Disconnector |
|
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The ZW32-12 outdoor high voltage vacuum circuit breaker, endearingly referred to as the 'circuit breaker', epitomizes superb outdoor distribution switchgear. It is ingeniously crafted to function at a rated voltage of 12kV with a steadfast three-phase AC of 50Hz. This adaptable circuit breaker excels in interrupting and connecting load currents, managing overload currents, and addressing short circuit currents within the power grid with precision. It features sophisticated overload and short circuit protection, effortlessly meeting control and measurement requirements while offering cutting-edge remote control and monitoring capabilities. This circuit breaker's extensive application is evident in substations, industrial domains, and mining enterprise distribution systems, delivering unmatched control and operation, ideal for environments demanding frequent operations.
Structural Features
Showcasing meticulous craftsmanship, the circuit breaker boasts a three-phase pillar dry design;
Meticulously engineered with a fully enclosed structure, it provides superior sealing along with exceptional moisture resistance and anti-condensation properties, making it a prime selection for high-temperature and humid areas;
Utilizes cutting-edge vacuum arc extinguishing technology, ensuring remarkable insulation reliability;
Offers impeccable opening and closing performance, guaranteeing safety with no combustion or explosion risk;
Compact and lightweight, requiring no maintenance, and promises an exceptional lifespan;
Offers versatile operation options: manual, electric, or remote control;
The operating mechanism is expertly sealed at the base of the switch box, providing robust protection against environmental corrosion;
Unveils a novel, simplistic design with a restless mechanism ensuring dependable dynamic performance, compactness, and an incredible service life reaching up to 10,000 cycles.
Main Technical Parameters
|
No |
Name |
Unit |
Data |
|||
|
1 |
Rated voltage |
kV |
12 |
|||
|
2 |
Rated current |
A |
630 |
1250 |
||
|
3 |
Rated frequency |
Hz |
50 |
|||
|
4 |
Rated insulation level |
1min power frequency withstand voltage |
Dry test |
/ |
42/48(fracture) |
|
|
Wet test |
34 |
|||||
|
Secondary circuit to ground |
2 |
|||||
|
Lightning impulse withstand voltage (peak value) |
75/85(fracture) |
|||||
|
5 |
Rated short circuit making current (peak value) |
kA |
50 |
63 |
||
|
6 |
Rated short time withstand current |
kA |
20 |
25 |
||
|
7 |
Rated peak withstand current |
kA |
50 |
63 |
||
|
8 |
Breaking times of rated short circuit breaking current |
Times |
30 |
|||
|
9 |
Rated short circuit duration |
s |
4 |
|||
|
10 |
Rated operating voltage and rated voltage of auxiliary circuit |
V |
DC220,AC220 ,AC/DC220 |
|||
|
11 |
Rated operation sequence |
/ |
Off-0.3s-on-off-180s-on-off |
|||
|
12 |
Rated current of over current trip |
A |
5 |
|||
|
13 |
Mechanical life |
second |
10000 |
|||
|
14 |
Allowable wear accumulative thickness of moving and static contacts |
mm |
3 |
|||
|
15 |
Rated current of over current release |
A |
5 |
|||
|
16 |
Current ratio of current transformer |
/ |
200/5 400/5 600/5 |
|||
|
17 |
Contact opening distance |
mm |
9±1 |
|||
|
18 |
Contact overtravel |
mm |
2±0.5 |
|||
|
19 |
Average opening speed |
m/s |
1.2±0.3 |
|||
|
20 |
Average closing speed |
m/s |
0.6±0.2 |
|||
|
21 |
Opening time |
ms |
≤40 |
|||
|
22 |
Closing time |
ms |
20~45 |
|||
|
23 |
Closing bounce time |
ms |
≤2 |
|||
|
24 |
Asynchrony of three phase closing and opening |
mm |
≤2 |
|||
|
25 |
Three phase circuit resistance |
μΩ |
≤80 Band isolation≤120 |
|||
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