ABB, a global leader in automation technology, announced the introduction of the new REX521BBHGLB01C feeder protection relay, which provides a strong guarantee for the safe and stable operation of medium-voltage power systems with advanced protection and monitoring capabilities.

The REX521BBHGLB01C feeder protection relay is not only a superior feeder protection device, it also provides a complete value-added information service package, including technical data, user documentation and basic information such as wiring diagrams, to ensure smooth operation and efficient use of the relay from installation, configuration, commissioning and life cycle.” Information can be easily accessed through the operator interface or through a computer equipped with the free software Inform IT Aspect Object Viewer.

The relay is typically used in neutral ungrounded system, resonant grounding system, neutral direct grounding system and resistance grounding system, which can meet the protection functions of quick break, overcurrent and zero grounding sequence between incoming and outgoing lines. The powerful protection function of REX521BBHGLB01C makes it suitable for large and medium voltage motor protection units.

REX521GHHGSH05G

In order to meet the needs of users in the Chinese market, the REX521BBHGLB01C has added protection functions such as acceleration before and after reclosing, and provides a full Chinese man-machine interface display, so debugging and operation is very convenient.” Increased operational safety The new REX521 condition monitoring feature monitors both the relay body and the system’s primary and secondary devices, enhancing the operational reliability of the protection.

Concluding remarks:
ABB REX521BBHGLB01C feeder protection relays further enrich ABB’s product line in the field of power system protection. Its comprehensive protection features, high reliability and powerful data processing capabilities provide a strong guarantee for the safe and stable operation of the global power system.

Citation information:

ABB REX521BBHGLB01C feeder protection relays integrate a large number of protection functions to provide users with an efficient and reliable power system protection solution.