Overview
The CJ19 Series Switching Capacitor Contactor is specially used for switching low-voltage shunt capacitors, which are widely used in reactive power compensation equipment with AC 50 Hz and voltage up to 400 V. In the power system with controllable capacitor capacity of 50 kvar under AC-6b usage category, three-phase unipolar or multipolar capacitor banks are switched to improve the power factor. The contactor is equipped with inrush current suppression device, which can effectively reduce the impact of closing inrush current on the capacitor and the operating overvoltage at the breaking moment. It can replace the original switching device consisting of one contactor and three current limiting reactors, with small size, light weight, strong making/breaking capacity and convenient installation.
This product complies with GB14048.4 and IEC60947-4-1.
Normal working conditions
1. Ambient air temperature: -5°C–+40°C. The average temperature within 24 hours shall not exceed +35°C.
2. The altitude shall not be higher than 2,000 m.
3. Atmospheric conditions: The relative atmospheric humidity at the installation site shall not exceed 50% at +40°C. A higher relative humidity is allowed at a lower temperature, e.g. 90% humidity at 20°C. Special measures shall be taken for the occasional condensation due to the temperature change.
4. Contamination grade: Grade 3.
5. The installation category is III. The inclination between the installation surface and the vertical plane shall not be more than +5°.
6. Degree of protection by enclosure: IP20.
7. Impact vibration: The contactor shall be installed and used in a place free of significant shaking, impact and vibration.
8. Transportation and storage: The contactor shall not be subjected to severe collision and vibration during the transportation, and shall not be attacked by rain and snow during the transportation and storage. The contactor is suitable for the transportation and storage at a temperature between -25°C and +55°C, which can reach +70°C in a short time (within 24 h).
