| Place of Origin: | China (Mainland) |
|---|---|
| Brand Name: | ghorit |
| Model Number: | GVS7-12 |
| Type: | High Voltage |
| Poles Number: | 3 |
| certificate: | ISO9001 |
| rated voltage: | 12kv |
| rated frequency: | 50hz |
Quick Details
Specifications
GVS7-12 Series High Voltage Vacuum Circuit Breaker for Mine
GVS7-12 series high voltage vacuum circuit breaker for mine, adapt to our company own developed overall type spring operating mechanism, combined with flameproof electrical feeds, development, production of miniature circuit breaker. Use for underground three-phase AC 50Hz, rated voltage 12 (7.2) kV of mine explosion-proof device, available for coal mine explosion-proof electrical feeds, and general occasions of mine electrical control and protection purpose. Circuit breakers can be installed as handcart-type or fixed structure to meet the needs of different installation sites.
GVS7-12 series high voltage vacuum circuit breaker for mine, adapt to our company own developed overall type spring operating mechanism, combined with flameproof electrical feeds, development, production of miniature circuit breaker. Use for underground three-phase AC 50Hz, rated voltage 12 (7.2) kV of mine explosion-proof device, available for coal mine explosion-proof electrical feeds, and general occasions of mine electrical control and protection purpose. Circuit breakers can be installed as handcart-type or fixed structure to meet the needs of different installation sites.
The Use of Environmental Conditions
1. Altitude: not exceed 2000m.
2. Ambient Temperature: not higher than +40 Celsius, not less than -15 Celsius.
3. Relative Humidity: daily average of not more than 95%, month average of not more than 90%.
4. Earthquake Intensity: not more than 8.
5. The ambient air without water drop, no serious filthy, chemical corrosion as well as place of intense vibration.
Mainly Technical Parameters NO. Item Units Value 1 Rated voltage kV 12(7.2)* 2 Rated frequency Hz 50 3 Rated lightning impulse voltage tolerance (peak) kV 42(32)* 4 Rated short-time power-frequency voltage tolerance (1min) kV 75(60)* 5 Rated current A 125, 250, 400, 630 6 Rated short-circuit breaking current kA 2.5, 16, 20, 25 7 Rated short-circuit closing current (peak) kA 31.5, 40, 50, 63 8 Rated short-circuit duration time S 4 9 Rated operating sequence O-0.3s-CO-180s-CO 10 Rated short-circuit breaking current breaking number Times 30 11 Closing time ms 35~70 12 Opening time ms 20~50 13 Mechanical life Times 10000 14 Rated storage and operation voltage V AC220/110DC220/110 15 Contact distance mm 10±1 16 Contact over travel mm 3.5±1 17 Average closing speed m/s 0.7~1.0 18 Average opening speed m/s 1.1~1.5 19 Contact closing spring time ms ≤2 20 Three phase closing opening asynchrony ms ≤2