https://new.abb.com/medium-voltage/digital-substations/protection-relays/feeder-protection-and-control/feeder-protection-and-control-ref630-iec
Feeder protection and control REF630 IEC - Feeder protection and control (Protection relays) |...
REF630 is a comprehensive feeder management IED for protection, control, measuring and supervision of utility and industrial distribution substations
protection and controlfeederiecrelays