Rish Relay 252-PVR - Phase Sequence & Phase Failure Relay
The protector is designed to monitor the correct phase rotation or sequence of 3-phase systems L1, L2, L3. Rotating machines are particularly vulnerable to incorrect phase sequences.
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- LED trip indication
- 2 pole relay contacts
- Auto Reset
Product Function
The protector continuously monitors the three-phase supply. With the correct phase sequence applied, the front panel LED will illuminate & the output relay will be energized. An incorrect sequence or missing phase will de-energize the relay, & the LED will be extinguished. If the supply drops below 85% of its nominal voltage, this condition will also cause a trip.
Applications
- Portable pumps
- Portable compressors
- Motor-driven mixing equipment
- Motors: Single Phasing
- Gensets: correct engine rotation
- All portable equipment
- All rotating machines
- An illuminated LED indicates when the relay is energized.
This relay can be used to protect:
- Portable electrical equipment
- Incorrect sequence connection
- Loss of one phase
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