Product Core Brief
- Model: REU615B
- 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 communication; synchronism check; load shedding; disturbance recording
- Typical Applications: Utility substations, industrial distribution systems, renewable energy networks, transformer voltage regulation
- Condition: New Original (New Surplus) / Tested Used Available
Product Introduction
ABB REU615B is a numerical voltage protection and control relay developed for substations and industrial power systems requiring dependable voltage supervision, frequency protection, and advanced substation communication capability. It is commonly used in feeder voltage supervision, busbar monitoring, renewable energy systems, transformer voltage regulation applications, and industrial distribution networks.
As part of ABB’s Relion® 615 series, the REU615B platform combines protection, control, disturbance recording, monitoring, and IEC 61850 communication functions into a compact withdrawable IED structure. Compared with older voltage protection relays, the 615 series improves interoperability, event analysis capability, and engineering flexibility while reducing panel wiring complexity.
The relay supports digital substation integration through IEC 61850 Edition 2, GOOSE messaging, and optional process bus functionality. Its withdrawable plug-in construction simplifies maintenance and relay replacement procedures in switchgear applications. Exact firmware revision, hardware configuration, and communication datasets should always be verified before commissioning or retrofit replacement.
Key Selling Points & Differentiators
- ABB REU615B integrates overvoltage, undervoltage, frequency protection, synchronism check, load shedding, 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 relay design simplifies maintenance and replacement in switchgear panels.
- Built-in disturbance recorder and SOE event logging improve post-fault diagnostics and commissioning analysis.
- Supports process bus integration through IEC 61850-9-2 LE in compatible configurations.
- Graphical LCD interface simplifies local operation, alarm review, and parameter setting.
- Compact 615-series architecture reduces retrofit engineering complexity and minimizes panel modifications.
- Incoming stock should pass startup diagnostics, communication verification, binary I/O simulation, and minimum 24-hour powered runtime before shipment.
