Contactless Switch

The contactless switch is an electronic power device module that can quickly switch power shunt capacitors. Its electrical structure is mainly composed of a high-power anti-parallel thyristor module, an isolation circuit, a trigger circuit, a synchronous circuit protection circuit, and a drive circuit, and is equipped with terminal blocks for controlling the conduction or cut-off of the switch, with control logic voltages of 0V (cut-off) and 12V (conduction). This switch has the characteristics of simple installation, convenient maintenance, fast response, no inrush current during switching, no noise during operation, stable and reliable operation, and phase loss protection. It is an ideal device for switching capacitor banks in reactive power dynamic compensation devices.

Main Technical Parameters

Rated voltage: 380V (220V)

Rated frequency: 50Hz

Control capacity:

380V class: 1Kvar~40Kvar

220V class: 1Kvar~10Kvar

Response time: less than 20ms

Working Conditions

● Ambient air temperature: -25℃~+50℃, and the average temperature within 24h does not exceed +35℃;

● When the temperature is +25℃, the relative humidity can reach 100% for a short time;

● Altitude does not exceed 1000m;

● The installation site has clean air, free of explosive and flammable hazardous materials;

No gases sufficient to damage insulation or corrode metals; no conductive dust; no rain, snow, or severe mold;

● The installation site is free of obvious excessive harmonic components.