RER620 provides main protection for overhead lines and cable feeders in distribution substations. It can be applied for protection and control of grounded and ungrounded distribution systems.
RER620 is the most powerful, advanced recloser protection and control relay in its class, perfectly offering time and instantaneous overcurrent, negative sequence overcurrent, phase discontinuity, breaker failure, imbedded loop control performing automatic loop restoration functions, commonly accepted as a means to significantly improve circuit reliability and to provide more effective system operation, and voltage metering and protection. The relay also features high impedance fault (HIZ) and sensitive earth fault (SEF) protection for grounded and ungrounded distribution systems. Also, the relay incorporates a flexible three and single-phase multi-shot auto-reclose function for automatic feeder restoration in temporary faults on overhead lines.
RER620 also integrates advanced control functionality, which facilitates the control of one circuit breaker or recloser via the relay’s front panel human machine interface (HMI) or remote control system. To protect the relay from unauthorized access and to maintain the integrity of information, the relay has been provided with a four-level, role-based user authentication system, with individual passwords for the viewer, operator, engineer, and administrator levels series.
- Large, easy to read LCD screen
- Support both single and three phase tripping for improved feeder performance
- Easy integration of Distributed generation on already installed recloser
- Integrated Web browser for easy setting and operation
- Six setting groups