3 Phase Circuit Protection Voltage Monitoring Relay Undervoltage Phase Sequence Protector

Features: 1. Use 5 indicators to indicate: normal, phase loss (voltage three phase unbalance), reverse phase, overvoltage and undervoltage. 2. The base of the protector adopts a rail type with two screw holes, which can be directly installed separately or mounted on the HT35 rail. 3. Phase loss protection means that when the protected line is in the running state or non operating state, any phase failure occurs, and the delay is 2S. 4. Reverse phase protection, a protection measure to prevent L1, L2, L3 three phase AC phase sequence from being connected incorrectly, delay 2S action. 5. Voltage unbalance protection means that a three phase voltage imbalance will affect a safe protection of the line. When the three phase unbalance rate x100pe