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ZW32Y-12 Indoor Vacuum Circuit Breaker
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ZW32Y-12 Indoor Vacuum Circuit Breaker
1. Overload protection
2. Short circuit protection
3. Controlling
4. Used in residential building, non-residential building, energy source industry and infrastructure.
5. According to the type of instantaneous release classified as follows : type B(3-5)ln, type C(5-10)ln, type D(10-20)ln
2. Short circuit protection
3. Controlling
4. Used in residential building, non-residential building, energy source industry and infrastructure.
5. According to the type of instantaneous release classified as follows : type B(3-5)ln, type C(5-10)ln, type D(10-20)ln
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Product Details
● ZW32Y-12/630-20/25 outdoor permanent magnetic MV vacuum on pillar dry circuit breaker (hereinafter referred to as circuit breaker), is the control and protection equipment used in rated voltage 12KV, 50HZ AC three phase high voltage distribution grid. Mainly used for load current, overload current and short-circuit current breaking, closing in the power lines. Applied to substation and industrial and mining enterprises in power system used for protection and control purposes.
● Standard: IEC 62271-100
Selection
Operating conditions
1. Ambient temperature: upper limit +40℃, lower limit -30℃;
2. Altitude: ≤2000m;
3. Wind pressure: not more than 700Pa (corresponding to the wind speed 34m/s);
4. Earthquake intensity: do not exceed 8 degree;
5. Pollution grade: III class;
6. Maximum daily temperature variety less than 25℃ .
Technical data
| Item | Unit | Parameter | ||
| Rated voltage | kV | 12 | ||
| Rated insulation level | 1min power frequency withstand voltage | Dry test Wet test | kV | 42/ fracture 48 |
| kV | 34 | |||
| Lightning impulse withstand voltage (peak) | kV | 75/ fracture 85 | ||
| Rated current | A | 630, 1250 | ||
| Rated short-circuit breaking current | kA | 20 | ||
| Rated short-circuit breaking current time | Times | 30 | ||
| Rated short-circuit closing current (peak) | kA | 50 | ||
| Rated peak withstand current | kA | 50 | ||
| Rated short-time withstand current | kA | 20 | ||
| Rated short circuit duration | S | 4 | ||
| Opening time | ms | ＜50 | ||
| Closing time | ms | ＜60 | ||
| Full off time | ms | ≤100 | ||
| Arcing time | ms | ≤50 | ||
| Mechanical life | Times | 30000 | ||
| Switch on power | J | 70 | ||
| Rated operational voltage and auxiliary circuits rated voltage | V | DC 220 | ||
| V | AC 220 | |||
Overall and mounting dimensions(mm)
Circuit breaker and mounting dimensions
Controller outline and mounting dimensions
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