EPU-41 monitoring relay
The EPU-41 monitoring relay monitors the voltage level in the 1-phase network for overvoltage and undervoltage, as well as for phase failure. The monitored voltage is also the
power supply for the device. In normal operation, the output relay is picked up. In the event of overvoltage or undervoltage, or if the phase fails, the output relay drops out. The over- or undervoltage is indicated by the red LED. In order to temporarily bridge brief disturbances on the network, the switch-off time t can be delayed from 0 to 10 seconds using the potentiometer.