I. Overview

The VS1-12 indoor high-voltage vacuum circuit breaker is a three-phase AC 50Hz indoor switchgear with a rated voltage of 12kV. It can be used for the operation and protection of industrial and mining enterprises, power plants, substations, and electrical facilities, and is suitable for frequent operation places. By integrating the mechanical operating mechanism with the circuit breaker body, it can be designed as a fixed installation unit or equipped with a dedicated propulsion mechanism to form a handcart unit for use. The main circuit can be equipped with integral fixed pole to achieve miniaturization, high reliability, and maintenance free of circuit breakers. It can be used with KY28A-12 mid mounted handcart switchgear or XGN fixed switchgear.

II. Environmental conditions for use

1. Environmental temperature: upper limit+40 ℃, lower limit -15 ℃ (storage and transportation allowed at -30 ℃);

2. Altitude: not exceeding 2000m;

3. Relative humidity: daily average not exceeding 95%, monthly average not exceeding 90%;

4. Saturated vapor pressure: The daily average value shall not exceed 2.2 × 10Mpa, and the monthly average value shall not exceed 1.8 × 10Mpa;

5. The seismic intensity shall not exceed 8 degrees;

6. No places with fire, explosion, serious pollution, chemical corrosion, or severe vibration.