The system of the current richter units and current richter unit

摘要

In the case of a system of the current richter units are connected in parallel with the current richter units. A current richter unit comprises a current converter circuit which, with an ac supply and an equal to stro mbus is connected, a first switch-on current limiting resistor which, with the same stro mbus is connected, a first contactor, the parallel to the first switch-on current limiting resistor is connected, one after the first switch-on current limiting resistor and the first contactor arranged smoothing capacitor, a second contactor, which a a - / from - signal outputs to the outside, a voltage detection of a unit, which have a value a on the two ends of the smoothing capacitor a dc voltage is applied, and a control unit, which the first contactor and the second contactor on the basis of the value of the of the voltage detection unit controls a dc voltage measured. The system of current richter units has a third contactor, which is connected with the current richter units, and a second turn-on current limiting resistor, the parallel to the third contactor is positioned. When all the contacts of the second contactors of the current richter units are closed, is a contact of the third contactor closed.