SUPPLYING DEVICE FOR ELECTRO-MECHANICAL CONTACTOR

摘要

The invention solves the problem of energizing coils, contactors, and electromechanical relays. In order to obtain a great force for switching-on, the energization must be performed at a high voltage, and after the switching is made, a lower force has to be gained. For this purpose the voltage on the coil must be lowered by powering the coil using an on/off static contactor; the coil is thus energized with an average voltage which ensures the above mentioned minimal force.