VS1-12 (ZN63A-12) series spring operating mechanism is a three-phase AC 50Hz,rated voltage 12kV indoor high voltage switch,the products is introduction of Xian Senyuang company technology ,the Products for industrial and mining enterprises, power plants and substation facilities to do electrical protection and control purposes. The agency specifically with VS1-12 vacuum circuit breakers.
Environmental Conditions
1.Ambient temperature: -15℃~+40 ℃ (at -30 ℃ to allow storage and transportation).
2. Altitude: ≤1000m.
3. Relative humidity: daily average ≤95%, monthly average ≤90%. saturated vapor pressure daily average≤2.2kPa, monthly average ≤1.8 kPa.
4. Earthquake intensity: ≤8 degree.
5. No fire, explosion hazard, serious filthy, chemical corrosion, as well as places of intense vibration.
Mainly Technical Parameters
1. Operating mechanism of circuit breaker with permanent magnet single phase DC motor storage energy, storage energy with follow technical data sheet:
| Type | Rated Voltage(V) | Power (W) | Normal working range (V) | Storage energy times of rated voltage (S) |
| ZY55-1 | DC 110 DC 220 | 70(80) | 85%～110% | ≤ 10 |
* Operating voltage adopt AC/DC power. ( ) with 40kA parameter.
2. Technical data for operating mechanism coil and release
| Name | Power (W) | Rated operating voltage (V) | Normal working voltage range | Remarks |
| Closing coil | 368 | DC220 DC110 | 85%-110% rated voltage | |
| Opening coil | 368 | 65%-120% rated voltage | ＜30% rated voltage should not opening | |
| Block coil | 4.8 | DC110 | 85%-110% rated voltage | |
| Overcurrent release Y7 (Y8,Y9) | - | Current 5A-3.5A |
