| 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 crafted to excel at a rated voltage of 12kV with a steadfast three-phase AC of 50Hz. This versatile circuit breaker adeptly manages the interruption and connection of load current, overload current, and short circuit current within the power grid. It features advanced overload and short circuit protective capabilities, effortlessly meeting control and measurement specifications while delivering cutting-edge remote control and monitoring functionalities. Its extensive application spans substations, industrial environments, and mining enterprise distribution systems, providing unmatchable control and operation—ideal for high-demand settings with frequent usage.
Structural features:
Crafted with meticulous precision, the circuit breaker exhibits a three-phase pillar dry design;
Engineered with an entirely enclosed structure, it offers superior sealing, exceptional moisture resistance, and remarkable anti-condensation properties, rendering it the perfect choice for high-temperature and humid regions;
Incorporates cutting-edge vacuum arc extinguishing technology for outstanding insulation reliability;
Delivers impeccable opening and closing performance, ensuring unparalleled safety with no risk of combustion or explosion;
Compact and lightweight, it requires no maintenance and promises an impressive lifespan;
Versatile in operation options—manual, electric, or remote control;
The operating mechanism is meticulously sealed at the base of the switch box, effectively shielding against outdoor environmental corrosion;
Showcases a novel, simplistic design with a resilient mechanism ensuring reliable dynamic performance, compact form, and an astounding 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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