Description
Product Introduction
ABB REF615C-E HCTJBABAABC2DNNIIE is a high-performance integrated protection relay for medium-voltage distribution systems (10 kV–35 kV). It integrates protection, control, measurement, monitoring, and communication in one device.
This REF615C-E variant provides directional and non-directional overcurrent and earth-fault protection, plus voltage, frequency, and power-based protection. It supports IEC 61850 Editions 1 and 2 (including HSR/PRP, GOOSE, IEC 61850-9-2 LE), Modbus, DNP3, and IEC 60870-5-103. The compact withdrawable-unit design speeds field swaps. Honestly, that cuts commissioning time when you’re under live-line pressure.

Installation & Configuration Guide
Phase 1—Pre-Installation
- De-energize the bay. Lockout/tagout.
- Wait 5 min for discharge.
- Export the existing relay program from PCM600.
- Photograph DIP switches, wiring, and rack layout.
- Tools: Fluke 115 multimeter, ESD wrist strap, torque driver (0.5 N·m), label tags.
Phase 2—Removal
- Label wires before disconnecting.
- Release the DIN rail latch.
- Pull the unit perpendicular to the backplane.
- Inspect backplane connector pins for bent contacts or corrosion.
Phase 3—Installation
- Put ESD protection on first. Wrist strap + ESD mat.
- Verify part number HCTJBABAABC2DNNIIE.
- Replicate jumper and terminal settings from photos.
- Seat the module until the latch clicks.
- Reconnect wiring at about 0.5 N·m.
- Check shield grounding against the wiring diagram.





