VS1-12/4000A High-current Indoor High-voltage Vacuum Circuit Breaker, 10KV Indoor Cartridge-type High-voltage Switch
Contact Info
- Xiangyang Industrial Zone, Liushi Town, Yueqing City,
- 李经理
- 15167417505
- 864640886@qq.com
The overall structure of the VS1-12 vacuum circuit breaker is a three-phase common tank type, with three-phase vacuum interrupters placed inside a metal tank. According to different insulation and protection methods, it is mainly divided into two structural types: the ordinary type and the pole type (solid-sealed type). The main conductive circuit of the ordinary circuit breaker is set in a cylindrical insulating tube made of insulating material, and the vacuum interrupter is placed inside the insulating tube, which can effectively resist environmental influences and mechanical damage. The pole type adopts epoxy resin solid-sealing technology, integrating the vacuum interrupter, main conductive circuit, and insulating support into a solid-sealed pole, which improves environmental tolerance.
The VS1-12 vacuum circuit breaker is designed with a front-back split structure and supports multiple installation forms. It can not only be installed as a fixed unit in fixed switchgear (such as XGN type, GG-1A type), but also cooperate with a special chassis car to be used as a withdrawable (cart-type) unit, suitable for cart-type switchgear such as KYN28 (GZS1) type. This product has certain interchangeability and versatility. The main technical parameters of the VS1-12 vacuum circuit breaker include: rated voltage 12kV, rated frequency 50Hz. Rated currents include 630A, 1250A, 1600A, 2000A, 2500A, 3150A, 4000A, etc. Rated short-circuit breaking currents include 20kA, 25kA, 31.5kA, 40kA, etc. Rated short-circuit making current (peak value) includes 50kA, 63kA, 80kA, 100kA, etc. Rated peak withstand current (dynamic stability current) includes 50kA, 63kA, 80kA, 100kA, etc. Rated short-time withstand current (4s thermal stability current) includes 20kA, 25kA, 31.5kA, 40kA, etc. Rated insulation level includes power frequency withstand voltage for 1 minute: 42kV to ground, 48kV across the breaker gap; lightning impulse withstand voltage: 75kV to ground, 85kV across the breaker gap. Mechanical life is usually 20,000 or 30,000 times [3-4] [8] [11]. The breaking times of rated short-circuit breaking current are 30 or 50 times. The rated operation sequence is open-0.3s-close-open-180s-close-open.
The normal use environment conditions of the VS1-12 vacuum circuit breaker must meet the following requirements: the upper limit of ambient air temperature is generally +40℃, the lower limit is -10℃ or -15℃, and it is allowed to be as low as -30℃ or -40℃ during storage and transportation. The altitude does not exceed 1000m or 2000m; if a higher altitude is required, the rated insulation level must be increased accordingly. The daily average relative humidity is not more than 95%, and the monthly average is not more than 90%. The installation site shall have no fire or explosion hazard, no severe pollution, chemical corrosion or violent vibration. The seismic intensity does not exceed 8 degrees. explosion pollution
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