| 摘要 |
The inverter system operates with a multi-polar electromechanical interrupter with a main control electromagnet, such as a contactor or contactor-circuit breaker. The appts. offers several current channels between the source and load terminals, and has main contacts separately controlled by a main electromagnet. The inverter contact are distributed between two switches (I4, I5) whose common point (14C,15C) is connected to the respective load terminals (T'1, T'3). The inversion control device (21) has a mechanical system (21a) urging the two switches (I4, I5) into the function of the state of the inverter electromagnet (E2), the coils' supply circuit being such that the switching of the inverter contacts is effected under tension. A mechanical element (M1) controlled by the main electromagnet (E1) locks the inversion mechanical equipment (21a) when the main coil (C1) is supplied.
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