Product Core Brief
- Model: REF615E-1G
- Brand: ABB
- Series: Relion® 615
- Core Function: Feeder protection and control for medium-voltage overhead lines and cable feeders
- Type: Numerical protection relay (IEC)
- Key Specs: 48–250 Vdc / 100–240 Vac auxiliary, 1 A or 5 A CT secondary, IEC 61850 + DNP 3.0
- Condition: New Original (New Surplus), not refurbished
Product Introduction
Pain-point scenario: When a medium-voltage feeder trips on an overcurrent or earth-fault condition, you need a relay that isolates the fault fast while keeping the rest of the distribution network online. The ABB REF615E-1G handles this for overhead lines and cable feeders in utility and industrial applications.
This relay integrates overcurrent, earth fault, undervoltage, and frequency protection in a compact drawout design, supporting IEC 61850, Modbus, and DNP3 for integration into modern automation systems. You choose the REF615E-1G when you need 4 analog current inputs (including ground/zero-sequence), 12 binary inputs plus 10 binary outputs, Ethernet 100Base TX, and product version 5.0 FP1 with reclosing functionality. Operating temperature range covers diverse environments, and the wide auxiliary voltage range (48–250 Vdc / 100–240 Vac) fits most substation power supplies.
