ZW32-12 (G) outdoor high voltage vacuum circuit breaker
Structural features
◆The overall structure is a three-phase pillar-type dry structure;
◆It adopts a fully enclosed structure with good sealing performance, good moisture-proof and anti-condensation performance, and is suitable for use in high temperature and humid areas;
◆Adopt vacuum arc extinguishing, reliable insulation;
◆Reliable opening and closing performance, no burning and explosion hazards;
◆Small size, light weight, maintenance-free and long service life;
◆Opening and closing operations can be manual, electric or remote controlled;
◆The operating mechanism is sealed at the bottom of the switch box, which can effectively prevent the switch from rusting due to long-term exposure to outdoor environments. The operating mechanism has a novel design, simple structure, reliable action, small size, and a mechanism life of up to 10,000 times.
Technical Parameters
|
Serial number |
Name |
Unit |
Data |
|||
|
1 |
Rated voltage |
kA |
12 |
|
||
|
2 |
Rated current |
A |
630 |
1250 |
||
|
3 |
Rated frequency |
Hz |
50 |
|||
|
4 |
Rated insulation level |
1min power frequency withstand voltage |
Dry Test |
kV |
42/48 fracture |
|
|
Wet test |
34 |
|||||
|
Secondary circuit to ground |
2 |
|||||
|
Lightning impulse withstand voltage (peak value) |
75/85 fracture |
|||||
|
5 |
Rated short-circuit breaking current |
kA |
20 |
25 |
||
|
6 |
Rated short-circuit making current (peak value) |
kA |
50 |
63 |
||
|
7 |
Rated short-time withstand current |
kA |
20 |
25 |
||
|
8 |
Rated peak withstand current |
kA |
50 |
63 |
||
|
9 |
Rated short-circuit breaking current breaking times |
Second-rate |
30 |
|||
|
10 |
Rated short circuit duration |
s |
4 |
|||
|
11 |
Rated operating voltage and auxiliary circuit rated voltage |
V |
DC220、AC220、AC/DC220 |
|||
|
12 |
Rated operating sequence |
|
Open-0.3s-Close-Open-180s-Close-Open |
|||
|
13 |
Overcurrent trip rated current |
A |
5 |
|||
|
14 |
Mechanical life |
Second-rate |
10000 |
|||
|
15 |
Allowable cumulative wear thickness of moving and static contacts |
mm |
3 |
|||
|
16 |
Rated current of overcurrent release |
A |
5 |
|||
|
17 |
Current transformer current ratio |
|
200/5 400/5 600/5 |
|||
|
18 |
Contact opening distance |
mm |
9±1 |
|||
|
19 |
Contact overtravel |
mm |
2±0.5 |
|||
|
20 |
Average opening speed |
m/s |
1.2±0.3 |
|||
|
21 |
Average closing speed |
m/s |
0.6±0.2 |
|||
|
22 |
Opening time |
ms |
20-40 |
|||
|
23 |
Closing time |
ms |
30-60 |
|||
|
24 |
Closing bounce time |
ms |
≤2 |
|||
|
25 |
Different phases of three-pole closing and opening |
ms |
≤2 |
|||
|
26 |
Phase-to-phase loop DC resistance |
μΩ |
≤80 |
|||