Product Core Brief
- Model: REF620
- Brand: ABB
- Series: Relion® 620 Series
- Core Function: Feeder protection, control, and supervision
- Type: Feeder Protection and Control Relay (IED)
- Key Specs: IEC 61850 Edition 2, withdrawable design, 24 BI / 14 BO typical
- Condition: New Original (New Surplus), not refurbished
Product Introduction
ABB REF620 is a feeder protection and control relay designed for medium-voltage substations, industrial distribution systems, and utility feeder applications. The relay combines protection, measurement, supervision, and IEC 61850 communication inside a withdrawable platform suited for modern digital substations.
A common field use is 11–33 kV feeder protection where operators need fast GOOSE signaling, disturbance recording, and configurable logic through PCM600. ABB REF620 supports radial, looped, and meshed networks, including feeders connected to distributed generation such as solar or wind systems. Before replacement, verify firmware version, connectivity package, and technical key alignment; mismatches are a regular source of commissioning delays in live substations.
