| Customization: | Available |
|---|---|
| Type: | High-voltage |
| Structure: | Three-column Disconnector |
|
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The ZW32-12 outdoor high voltage vacuum circuit breaker, affectionately known as the 'circuit breaker,' is a premier outdoor distribution switchgear. It operates with precision at a rated voltage of 12kV and a robust three-phase AC of 50Hz. This adaptable circuit breaker excels in managing the interruption and connection of load current, overload current, and short circuit current within the power electrical grid. It features state-of-the-art overload and short circuit protective capabilities, effortlessly meeting control and measurement specifications while offering sophisticated remote control and monitoring functionalities. Its extensive application spans substations, industrial settings, and mining enterprise distribution systems, delivering unmatched control and operational excellence—ideal for environments demanding frequent and reliable operations.
Structural features:
Meticulously crafted, the circuit breaker flaunts a three-phase pillar dry design;
Masterfully engineered with a fully enclosed structure, it provides outstanding sealing, superior moisture resistance, and anti-condensation properties, making it exceptionally suited for high-temperature and humid regions;
Utilizes cutting-edge vacuum arc extinguishing technology for unparalleled insulation reliability;
Ensures impeccable opening and closing performance, guaranteeing safety with zero risk of combustion or explosion;
Compact and lightweight, it is maintenance-free and promises an extraordinary lifespan;
Versatile in operation with manual, electric, or remote control options available;
The operating mechanism is securely enclosed at the base of the switch box, effectively shielding against outdoor environmental corrosion;
Exhibits an innovative, simplistic design with a resilient mechanism that ensures reliable dynamic performance, compact form, and an astonishing service life of 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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