WEG Automation RPW FSF Relay.
Function: Phase Sequence and Phase Loss detection.
Neutral Not Selected: The Phase Loss and Sequence Relay is designed to protect three-phase systems against phase loss and reversions. Functioning: directly connected to the supply to be monitored, supplying the 3-phases and the phase amplitude to be within the selected limits and in the correct sequence, the output relay switches the contacts to the work position (closing terminals 15-18) and the red LED will switch on. When phase loss or reversion occurs the output contacts (opening 15-18) become de-energized and the red LED indicating system running switch OFF.
Neutral Selected: In the same product, a “jumper„ must be made between terminals A and B for neutral monitoring, the relay will perform the same monitoring for phase loss and balancing and will also monitor the voltage in neutral, which must be connected. When the voltage at neutral exceeds 20 V, value that considers unbalanced loads, there will be output de-energization (opens 15-18).
Voltage: 380V to 415Vac 50/60 Hz
Part Number: 10047120 (RPW-FSF-D70, RPW-FSFD70)
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