3UG4511-1BP20

The 3UG4511-1BP20 is an analogue phase sequenced Monitoring Relay, the phase sequence in a three-phase network and no adjustments are required for operation. The device has an internal power supply and works using the closed-circuit principle. If the phase sequence at the terminals L1-L2-L3 is correct, the output relay picks up after the delay time has elapsed and the LED is lit. If the phase sequence is wrong, the output relay remains in its rest position.

• Analogue Phase Sequence Monitoring Relay
• SPST-NC Contact Configuration
• Variably Adjustable to Overshoot, Undershoot or Range Monitoring
• Freely Configurable Delay Times and Reset Response
• Provides Maximum Protection for Mobile Machines and Plants or for Unstable Networks
• Automatic direction correction of rotation by sensing power system faults and wrong phase sequence