Product Core Brief
- Model: REU615 2RCA025340A0001B
- Brand: ABB
- Series: Relion® 615
- Core Function: Voltage protection, frequency protection, and control
- Type: Numerical voltage protection and control relay / IED
- Key Features: IEC 61850 support; frequency protection; voltage regulation; event recording
- Typical Applications: Utility substations, industrial distribution systems, transformer voltage regulation, load shedding systems
- Condition: New Original (New Surplus) / Tested Used Available
Product Introduction
ABB REU615 2RCA025340A0001B is a numerical voltage protection and control relay developed for medium-voltage and high-voltage power systems requiring dependable voltage supervision, frequency protection, and automation integration. It is widely used in substations, industrial distribution systems, renewable energy applications, busbar supervision schemes, and transformer voltage regulation projects.
The REU615 platform supports both voltage/frequency protection applications and automatic voltage regulation for transformers equipped with on-load tap changers. Built on ABB’s Relion® 615 architecture, the relay combines compact withdrawable construction with IEC 61850 communication and modern substation automation capability.
Compared with older ABB 610-series relays, REU615 adds improved communication interoperability, process bus support, advanced event recording, configurable logic, and better integration into digital substations. Exact firmware revision, hardware configuration, and communication datasets should always be verified before retrofit replacement or commissioning.
Key Selling Points & Differentiators
- ABB REU615 2RCA025340A0001B integrates voltage protection, frequency protection, synchronism check, load shedding, voltage regulation, and monitoring functions in one compact IED platform.
- Supports IEC 61850 Edition 2, GOOSE messaging, Modbus, DNP3, and IEC 60870-5-103 communication protocols for modern substation integration.
- Withdrawable plug-in relay design simplifies maintenance and relay replacement in switchgear panels.
- Built-in disturbance recorder and SOE event logging support post-fault diagnostics and commissioning analysis.
- Supports automatic voltage regulation for transformers with on-load tap changers in dedicated configurations.
- Compact construction and configurable standard applications reduce engineering time during retrofit projects.
- Incoming stock should pass startup diagnostics, communication verification, binary I/O simulation, and minimum 24-hour powered runtime before shipment.
- Not recommended for uncontrolled “drop-in” replacement projects where IEC 61850 datasets, firmware revisions, or logic configurations are undocumented.
