ZN63A-12(VS1)Type lndoor High Voltage Vacuum Circuit Breaker
Short Description:
ZN63A-12 (VS1) type indoor high voltage vacuum circuit breaker (hereinafter referred to as circuit breaker) is used for indoor high voltage switch equipment of power system, as a protection and control unit of network equipment, industrial and mining enterprises power equipment, suitable for the place of frequent operation at rated working current or many times of breaking short-circuit current place. The circuit breaker uses the integrated design of actuator and the circuit breaker body, not only can be used as a fixed install unit, also can be equipped with special chassis, hand car unit.
Detail
Main application
ZN63A-12 (VS1) type indoor high voltage vacuum circuit breaker (hereinafter referred to as circuit breaker) is used for indoor high voltage switch equipment of power system, as a protection and control unit of network equipment, industrial and mining enterprises power equipment, suitable for the place of frequent operation at rated working current or many times of breaking short-circuit current place. The circuit breaker uses the integrated design of actuator and the circuit breaker body, not only can be used as a fixed install unit, also can be equipped with special chassis, hand car unit.
The use of environmental conditions
1. The environment temperature: upper limit+40℃, lower limit -15℃ (allow storage at -30℃);
2. Altitude: no more than 2000m;
3. Relative humidity: daily average value is not greater than 95%, monthly average is not greater than 90%;
4. Saturated steam pressure: daily no larger than 2.2×10-3Mpa, monthly average is not greater than 1.8×10-3Mpa;
5. Earthquake intensity does not exceed 8 degrees;
6. No fire, explosion, pollution, chemical corrosion and severe vibration place；
Technical Parameter
| Item | Unit | Parameter | |||||||
| Parameters of voltage, current, life | |||||||||
| Rated voltage | kV | 12 | |||||||
| Rated short time power frequency withstand voltage(1 min) | kV | 42 | |||||||
| Rated lightning impulse withstand voltage (Peak) | kV | 75 | |||||||
| Rated frequency | Hz | 50 | |||||||
| Rated current | A | 630 1250 | 1250 1600 2000 2500 | 1250 1600 2000 2500 3150 4000 | 4000 5000 | ||||
| Rated short-circuit breaking current | kA | 20 | 25 | 31.5 | 40 | 50 | |||
| Rated short-time withstand current(RMS) | kA | 20 | 25 | 31.5 | 40 | 50 | |||
| Rated peak withstand current | kA | 50 | 63 | 80 | 100 | 125 | |||
| Rated short-circuit closing current | kA | 50 | 63 | 80 | 100 | 125 | |||
| Rated single/back-to-back capacitor bank breaking current | A | 630/400 | |||||||
| Rated short-circuit current duration | S | 4 | |||||||
| Rated short-circuit breaking times | times | 50 | 30 | ||||||
| Rated operating sequence | O-t-CO-180s-CO rated short-circuit breaking current less than 31.5kA, t=0.3s rated short-circuit breaking current 40kA, t=180s | ||||||||
| The main galvanic circle resistance | µΩ | ≤50(less than 1250A); ≤40(less than 1600~2000A); ≤30(more than 2500A) | |||||||
| Rated operation voltage | ≌220/110 | ||||||||
| Mechanical life | times | ≥10000 | |||||||
| Mechanical property parameters | |||||||||
| Open clearance between contacts | mm | 11+1 | |||||||
| Overtravel | mm | 3.0+0.5 | |||||||
| Contact closing bounce time | ms | 2 | 3 | ||||||
| Three-phase, switching in different period | ms | ≤2 | |||||||
| Average opening speed | m/s | 0.9~1.3 | |||||||
| Average closing speed | m/s | 0.5~0.8 | |||||||
| Opening time (rated voltage) | ms | ≤50 | |||||||
| Closing time (rated voltage) | ms | ≤70 | |||||||
