Rish Relay - V/Hz (Digital Line Monitoring Relay)
Rish Relay V/Hz is used to protect against Over Voltage, Under Voltage, Phase Unbalance, Phase Sequence detection, Phase Failure detection, Under and Over Frequency conditions.
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Features
- Over voltage protection
- Under voltage protection
- Single phasing protection
- Phase unbalance protection
- Phase incorrect sequence protection
- Over frequency protection
- Under frequency protection
- 4 Digits ultra bright 7 Segment LED Display
- Trip Relay cum DPM with Class 0.5
- True RMS measurement
- Previous fault Storage
- LED Indication
Applications
- Over voltage
- Under voltage
- Start up standby generators
- Operation of mains failure units
- Switching standby hybrid supplies
- Protecting computer supplies
- Close control of equipment
- Gensets - to monitor correct operation of the AVR (Automatic voltage regulator) and excitation system
- Motors-Some electric motors are voltage sensitive, and can overheat and burn out when operated at low voltage
- UPS supplies - When the main A. C. supply falls outside the acceptable operating voltage window the relay can initiate a change over to an alternate or standby supply
- Motors - Single Phasing
- Incorrect sequence connection.
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