EPU-42 monitoring relay
The EPU-42 monitoring relay monitors the voltage level in the 1-phase network for overvoltage and undervoltage. The monitored voltage is also the power supply for the device. In normal operation, the output relays are switched off. In the event of overvoltage, relay 1 switches on, and in the event of undervoltage, relay 2 switches on. The red and green LED displays clearly indicate the error status. In order to temporarily bridge brief disturbances on the network, the response time t can be delayed from 0 to 10 seconds with the potentiometer.