ABB, the global leader in electrification products and technologies, recently introduced a new feeder protection relay, the REX521GHHPSH50G. Part of ABB’s REX 521 series, the relay integrates protection, control, measurement, communication, monitoring and arc protection, and is designed based on the international standard IEC 61850 platform to support the interoperation and horizontal communication of smart devices.

With its advanced technology, REX521GHHPSH50G relays provide a comprehensive solution for the power industry such as power substations and power plants. It can not only be used as the main protection of overhead lines and feeders in the distribution network, but also as the backup protection of transformers and other equipment. In addition, the protection logic and related functions of this relay have been specially optimized for the Chinese market to meet the specific needs of different industrial users.

The relay configuration is flexible, widely used, suitable for cement, metallurgy, petrochemical, automotive, semiconductor, paper, tobacco and other industrial fields, but also can be used in municipal, airport, port, real estate and other industries. ABB offers seven standard configurations to meet customer requirements, ensuring that the REX521GHHPSH50G relay can be adapted to a wide range of operating environments and protection needs.

Concluding remarks:

The introduction of the REX521GHHPSH50G feeder protection relay marks ABB’s continued innovation and development in the field of power system protection. This relay is expected to play an important role in improving the reliability of the power system, optimizing the operation of the grid, and reducing maintenance costs.