Description
Product Introduction
ABB REF615 HBFDACADNDA6ABN1XG is a medium-voltage feeder protection relay from the Relion 615 series, designed for industrial and utility MV distribution systems. It integrates protection, control, measurement, automation logic, and communication interfaces in a plug-in form factor suitable for switchgear installation.
This specific configuration is optimized for SCADA connectivity using Modbus RTU and IEC 60870-5-103 protocols, with optional IEC 61850. Field deployment emphasizes correct CT/VT scaling, auxiliary supply verification, and firmware alignment to prevent commissioning delays.
Frequently Asked Questions
Q: Can this relay be hot-swapped?
A: No. Despite the plug-in design, auxiliary circuits remain live. Always isolate DC/AC supply before replacing the unit.
Q: Is REF615 HBFDACADNDA6ABN1XG still supported?
A: Yes. The Relion 615 series is actively supported, with spare parts, firmware updates, and technical documentation available from ABB.
Q: Will I lose configuration during replacement?
A: Yes, unless parameters, event logs, and communication settings are backed up beforehand.
Q: What is the most common commissioning issue?
A: Incorrect CT ratio selection, misconfigured trip circuits, and missing termination resistors for Modbus/IEC buses.
Q: Does it support IEC 61850?
A: Optional. Standard protocol is Modbus RTU or IEC 60870-5-103. IEC 61850 must be specified and activated via hardware option.
Q: Are these units new or refurbished?
A: Typically new OEM surplus from project overstock. Some secondary-market units exist; verify firmware and serial number before installation.
