Description

ABB REF630 IEC distribution substation isolation and management digital relay

Feeder protection and control REF630 IEC
Flexibility and high functionality for feeder protection and control applications
REF630 is a comprehensive feeder management relay for protection, control, measurement and supervision in utility and industrial power distribution systems, including radial, looped and meshed distribution networks, with or without distributed generation. REF630 is also ideal for feeder bay control.

Application
REF630 has been designed to be the main protection for overhead lines and cable feeders, in either isolated neutral, resistance-earthed, compensated or effectively earthed distribution networks. The comprehensive feeder
management relay offers four predefined configurations, intended for open/closed ring feeder applications, radial overhead/mixed line feeder applications, ring/meshed feeder applications and bus sectionalizers.

The earth-fault protection has been significantly extended, now including not only directional and non-directional, transient/intermittent, wattmetric and admittance-based, but also both harmonics and multifrequency admittance-based earth-fault protection. The new additions take the earth-fault protection to new heights, creating an extensive earth-fault protection portfolio. In addition, the sensitivity of the intermittent earth-fault protection has been
significantly improved and reactive power undervoltage protection added.

Scope

REF630 has been designed to be the main protection for overhead lines and cable feeders.

Product benefits

Freely configurable functionality to meet application specific requirements
Extensive functionality and scalable hardware for the most demanding applications
All-in-one solution with integration of protection, control, monitoring and supervision in one relay
Large integrated or detached HMI with user configurable push buttons, making it easy to use
Extensive life cycle services