ABB REF610 Feeder Protection

ABB REF610 Feeder Protection Relay – Key Functions‌

1. Core Protection Features‌

Overcurrent & Earth Fault Protection‌
Three-phase non-directional overcurrent with IDMT/DTL curves
Low-set stage for sensitive fault detection
Thermal Overload Protection‌
Cable/equipment thermal replica algorithm

2. Automation & Control‌

Auto-Reclosing (79)‌
Configurable sequences for fault recovery
Synchrocheck (25)‌
Safe breaker closing synchronization

3. Monitoring & Communication‌

Local HMI‌
LCD display for local operation and diagnostics
Remote Connectivity‌
Serial communication (Modbus RTU) and Ethernet options
IEC 61850 support (GOOSE/MMS) in advanced models

4. Application Scope‌

Primary Use Cases‌:
Industrial/utility feeder protection (up to 40.5kV)
Resistive/directly grounded systems
Offshore/marine environments (with arc-flash protection option)