ZW32-12 series outdoor high-voltage vacuum circuit breakers (hereinafter referred to as "circuit breakers") are outdoor distribution switchgear with rated voltage of 12kV and three-phase AC of 50Hz. Circuit breaker is mainly used for opening and closing Load current, overload current and short-circuit current in power lines have overload and short-circuit protection functions, meet the requirements of control and measurement, and can also realize remote control and monitoring functions, which are widely used in It is used for control and operation in distribution systems of substations and industrial and mining enterprises, and is especially suitable for places requiring frequent operation.
Circuit breakers meet technical standards such as GB1984-2003, DL/T 402-2007 and IEC60056.
Main features
1.high reliability
2. It is completely maintenance-free during the whole life
3. It has high mechanical life and electrical life
4. The whole machine is small in size, light in weight and easy to installed in medium voltage overhead power grid, as a sub-, Combined with load current, overload current and short circuit current.
Normal use environment
1. Ambient air temperature:-30°C ~+60°C;
2. Altitude: ≤ 3000 m;
3. The wind speed shall not exceed 34m/s;
4. Vibration or ground motion from the outside of switching equipment and control equipment can be ignored;
5. Pollution grade: Grade IV;
6. Storage temperature: -40
Advantages
1 - with reliable interlock functions, suitable for frequent operation
2 - low noise and energy consumed
3 - simple and robust construction.
4 - high operating reliability
Fields of application
1 - Transformers and distribution substations
2 - Generator control and protection
3 - Capacitor bank control and protection, etc
mechanical parameter
| name |
unit |
data |
| rated voltage |
KV |
40.5 |
| rated current |
A |
630/1250 |
| rated frequency |
HZ |
50/60 |
| power frequency withstand voltage 1min(wet)(dry)phase to phase/phase to ground |
KV |
80 95/95 |
| lighting impulse withstand current(peak value) phase to phase/phase to ground |
KV |
185 |
| rated short circuit breaking current |
KA |
25/31.5 |
| rated short circuit closing current(peak) |
KA |
63/80 |
| rated peak withstand current |
KA |
63/80 |
| 4s short time withstand current |
KA |
25/31.5 |
| rated operating cycle |
|
on-0.1s-on/off-3s-on/off-6s on/off-60s recovery |
| rated short circuit current breaking times |
TIMES |
30 |
| mechanical life |
TIMES |
10000 |
| mechanism control voltage |
V |
AC/DC220 |
| 1min power frequency withstand voltage of secondary circuit |
KV |
2 |
| contact opening distance |
MM |
16±1 |
| contact overstroke |
MM |
4±0.5 |
| opening speed |
M/S |
1.4-1.8 |
| closing speed |
M/S |
0.4-0.8 |
| contact closing bounce time |
MS |
≤5 |
| interphase center distance |
MM |
460±2 |
| different periods of three phase opening and closing |
MS |
≤2 |
| resistance of each phase conductive loop |
μΩ |
<80 |
| closing time |
MS |
≤100 |
| opening time |
MS |
≤50 |
| weight |
KG |
270 |
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