Feeder Protection Relay
REX521GHHPSH51G Feeder Protection Relay
REX521GHHPSH51G Feeder Protection Relay
REX521丨REX521GHHPSH51G
The REX 521 Feeder Protection Relay provides your medium-voltage network with efficient protection, measuring, supervision and basic control functions. The typical REX 521 applications include incoming and outgoing feeders in isolated neutral, resonant earthed, solidly earthed and resistively earthed systems.
This state-of-the-art protection relay complements the ABB range of solutions from basic protection relays to intelligent feeder terminals for distribution system applications. REX 521 provides your network with standard protection functions such as three-phase overcurrent,non-directional and directional earth-fault,thermal overload protection and phase discontinuity protection. Additionally, the relay supervises power quality in your network by measuring harmonics.
In addition to its protection functions,the REX 521 relay offers:
– Versatile measurements for monitoring your network
– Integrated disturbance functions with high sampling frequency enabling accurate disturbance detection
– Circuit breaker control
– Auto-reclosing
– Condition monitoring
– Total harmonic distortion (THD) for power quality measurements
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