ABB REG615 Generator Protection Relay

Product Description

The ABB REG615 is a generator and distributed energy interconnection protection relay, delivering reliable protection, measurement, and control in industrial and utility power systems. Designed for synchronous generators and interconnection points, it ensures safe operation by detecting abnormal conditions and isolating faults to prevent equipment damage and grid instability. Moreover, its compact and modular design simplifies integration into control panels and substations, making installation fast and efficient.

This relay supports a variety of modern communication protocols, including IEC 61850 with GOOSE messaging, Modbus®, DNP3, and IEC 60870‑5‑103. Additionally, it offers redundancy via PRP and HSR networks, ensuring continuous operation even in critical applications. Local and web-based HMI tools provide intuitive configuration, real-time monitoring, and single-line diagram editing.

In addition to generator protection, the REG615 excels in distributed energy interconnection scenarios. It continuously monitors renewable energy sources such as solar or wind farms to ensure safe grid disconnection, perform islanding detection, and maintain network stability. This relay supports IEC 61850 second edition and IEEE 1588 v2 high-precision time synchronization, offering enhanced interoperability and reliability.

Key Benefits

• Integrates protection, control, measurement, and supervision into one compact device

• Provides complete generator protection including stator ground faults, differential, and loss-of-field

• Ensures distributed energy units connect safely, maintaining grid stability and reliability

• Supports multiple communication protocols, redundant Ethernet, and precise time synchronization

• Quick installation and testing with a modular, plug-and-play design

• Intuitive HMI with LCD display and web-based access for monitoring and configuration

Technical Specifications

Protection Functions:

• Generator differential protection

• Non-directional and directional overcurrent protection

• Over/under voltage protection

• Frequency protection: over/under frequency, rate of change of frequency

• Loss of field protection

• Reverse power protection

• Synchronization check

Communication Protocols:

• IEC 61850 (including GOOSE messaging, 61850-9-2 LE)

• Modbus®

• DNP3

• IEC 60870‑5‑103

• Optional: Profibus DPV1 via SPA-ZC 302 adapter

Redundancy:

• PRP (Parallel Redundancy Protocol)

• HSR (High-availability Seamless Redundancy)

User Interface:

• Local HMI with editable LCD single-line diagram

• Web-based configuration and monitoring

Standards Compliance:

• IEC 61850 (1st and 2nd edition)

• IEC 60255

• IEC 61131-2

• IEEE 1588 v2 precision time protocol

Mounting:

• Panel-mount, compact modular design

Typical Applications

• Medium and small diesel power plants

• Combined heat and power (CHP) stations

• Hydro, gas, and thermal power plants

• Renewable energy integration: solar farms, wind parks

• Grid interconnection points for distributed generation

Support & Maintenance

ABB offers a comprehensive lifecycle service for the REG615, including installation guidance, preventive maintenance, and firmware updates. Its modular design allows easy field replacement, minimizing downtime and operational risks.

FAQ

Q1: Can REG615 protect both generators and distributed energy units?
A1: Yes, it provides dedicated generator protection and interconnection monitoring for distributed energy sources.

Q2: Which communication protocols does REG615 support?
A2: REG615 supports IEC 61850, Modbus®, DNP3, IEC 60870‑5‑103, and optionally Profibus DPV1.

Q3: Is REG615 suitable for renewable energy applications?
A3: Absolutely, it monitors solar, wind, and other distributed generation units to maintain grid stability.

Q4: How does REG615 ensure system reliability?
A4: It supports PRP and HSR redundancy, local and web-based HMI, and real-time monitoring of generator or grid conditions.