ABB Relion® 630 series Feeder protection and control REF630
Feeder protection and control REF630
REF630 has been designed to protect overhead line and cable feeders in utility
and industrial power distribution systems, including radial, looped and meshed
distribution networks, with or without distributed power generation.
Product highlights
• Extensive earth-fault protection portfolio with
unique multifrequency admittance-based
protection for higher sensitivity and selectivity
• Advanced and fast fault location of short
circuits and earth faults
REF630 also includes a fault locator that locates
short circuits in radial distribution networks and
earth faults in effectively and low-resistance
earthed ones. If the fault current is as high as or
higher than the load current, earth faults in
isolated neutral distribution networks will also
be located.