VS1- 12 (ZN63-12) side-mounted type vacuum circuit breaker is a kind of indoor high voltage switch device which is used in the AC thee-phase power system of frequency 50/60Hz. rated voltage 12KV to be the protection and control unit. Because of the special superiority of vacuum circuit breaker, especially suitable for applications that require frequent operation at rated operating current or multiple open short-circuit breaking curent location. It is especially suitable to the place requiring frequent operations.
VS1- 12 (ZN63-12) side- -mounted type vacuum circuit breaker adopts fixed insallation, which is mainly used in the fixed switchgear. It can be used alone or used in ring network power supply system, box-ype variable system and non-standard power supply system to protect and control the Tansmission and disribuion line.
Model description
Technical Parameter
| Item | Units | Parameters | ||
| Rated voltage | KV | 12 | ||
| Rated current | A | 630-3150 | ||
| Rated short- circuit breaking current | KA | 20 | 31.5 | 40 |
| Rated short- circuit closing current | KA | 50 | 80 | 100 |
| Rated dynamic steady electric current(peak) | KA | 50 | 80 | 100 |
| Rated thermal stability current(RMS) | KA | 20 | 31.5 | 40 |
| Rated thermal stability time | S | 4 | ||
| The breaking times of rated short circuit breaking current | Times | 30 (50) | ||
| Open time of CD10 electromagnetic operating mechanism | mS | < 80 | ||
| Rated operating sequence | O-0.3s-CO- 180s-CO | |||
| A minute power frequency withstand voltage(RMS) | KV | The phase 42, section 48 | ||
| Lightning shock pressure | KV | The phase 75, section 85 | ||
| Mechanical life | Times | 10000 | ||
| Note: 20KA,31.5KA t=0.3s t 1= 180s 40KA t=180s t 1= 180s. | ||||
product description
| Power supply conditions | Within the factory production ZN28G-12 series indoor high voltage vacuum circuit breaker, can be equipped with CT17, CT19 spring mechanism and CD17 electromagnetic mechanism. |
| Ambient condition | 1. Altitude:≤1000m;
2. The ambient temperature: not higher than +40℃. not less than 10℃(-30℃ is permitted storage) 3. Earthquake does not exceed degree 8; 4. Relative humidit: daily average value is not greater than 95%.monthly average is not greater than 90%; air relative humidity on average less than 2210-3Mpa. on average less than 1.810-3Mpa. 5. The surrounding air is not corrosive and flammable gas, steam and other significant plluion; |
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