Patent ID: 6480368
Filing Date: 2002-11-12
Classification: H02H

Abstract:
Monitoring circuit for monitoring a voltage, comprising a coil (S), which is incorporated in a first current branch to be connected to the voltage to be monitored, and an auxiliary relay, an actuating winding (A) of which is incorporated in a second current branch connected in parrallel to the first current branch, characterised in that in the first current branch a first make contact (a1) of the auxiliary relay is connected in series with the coil, in that in the second current branch a first resistor (R2) is connected in series with the actuating winding (A) of the auxiliary relay and in that a series circuit of a second resistor (R3) and a second make contact (a2) of the auxiliary relay is connected in parallel to the actuating winding (A) of the auxiliary relay.