According to the technical requirements of power capacitor switching, the power electronic
switch thyristor and the high-power bistable magnetic holding relay are combined to realize
the voltage zero-crossing input and the current zero-crossing. It not only has the advantages of
non-contact switch zero-cross switching, but also has the advantages of small contact resistance,
impact resistance, reliable operation, low energy consumption, long mechanical life, etc. It is
designed and manufactured for 0.4KV system switching power capacitors. In the low-voltage
reactive power compensation device in the factory, living quarters, box change and urban
network and rural network transformation.
Main Technical Parameters:
--- Voltage zero-crossing input, current zero-crossing;
-- Cut and cast demonstration protection function;
-- Lack of phase protection function ;
-- No need for peripheral power supply;
-- Long mechanical life; using microprocessor to drive magnetic holding relay, low failure rate;
-- No need for external series reactor, no on-off current, zero-crossing switching, no harmonic injection;
-- The power consumption is small after the switch is turned on, and it does not generate heat;
-- Enter the new number photoelectric isolation, the action is stable and reliable;
-- Strong anti-interference ability;
-- No load capacitance monitoring alarm.
Technical Characteristics:
-- Working power supply: AC220V + / - 20%;
-- Control voltage: 400 v;
-- Contact capacity: AC250V, 60 A;
-- Control capacitor capacity: 30 kvar or less;
-- Control mode: DC12V;
-- Input flow: < 2.0 Ie;
-- Altitude: 2500 meters or less;
-- Ambient temperature: - 40 ? ~ + 70 ?;
-- Relative humidity: 90% or less when air humidity at 20 ?, and higher relative humidity is
allowed when the temperature is lower;
-- Environmental conditions: There is no danger of explosion in the surrounding medium, no
gas enough to damage the insulation and corrode the metal, no conductive dust.
ambient medium no explosion danger, no enough to damage the insulation and corrosion of
metal gas, no conductive dust.