REB611 | ABB Busbar Protection Relay for Utility Substations

Product Description: ABB REB611 Busbar Protection Numerical Relay Module

The ABB REB611 is a high-performance busbar protection relay module designed for use in utility substations and industrial power systems. This Intelligent Electronic Device (IED) offers advanced protection capabilities for single busbars, safeguarding them against short-circuits and faults. Additionally, it supports multipurpose differential protection for critical assets such as generators, motors, transformers, and reactors, making it a versatile solution for power system protection.

The REB611 features phase-segregated busbar protection for enhanced fault isolation, ensuring that faults are quickly and accurately detected. With integrated control functions for breakers and disconnectors, this relay module allows seamless coordination and protection of your power system assets. The device also provides comprehensive measurement and monitoring capabilities for current, voltage, frequency, and power, facilitating real-time insights into your system’s performance.

This factory-configured and pre-tested relay minimizes engineering and commissioning time, helping you quickly deploy protection solutions. It also supports modern digital substations with communication protocols such as IEC 61850, SPA bus, Modbus, and DNP3, ensuring smooth integration with your existing infrastructure.

Technical Specifications

• Model Number: REB611

• Series: Relion® 611 series

• Type: Busbar Protection and Control Relay

• Protection Functions: Phase-segregated short-circuit, multipurpose differential, overcurrent, earth-fault

• Control Functions: Breaker/disconnector control, interlocking

• Measurement: Current, voltage, frequency, power, energy

• Recording: Disturbance recorder, event log, fault recorder

• Communication Protocols: IEC 61850, SPA bus, Modbus, DNP3

• Interface: Local HMI (LCD + keypad), remote communication

• Power Supply: 24–250 VDC / 100–240 VAC

• Operating Temperature: –40°C to +55°C

• Storage Temperature: –40°C to +70°C

• Dimensions (H × W × D): 177 × 177 × 201 mm

• Weight: 4.1 kg

• Certifications: IEC, ANSI, CE, UL

• Country of Origin: Switzerland

• Application Areas: Utility substations, industrial power systems, generator/motor/transformer protection

FAQ

Q: What protection functions are provided by the ABB REB611?
A: The REB611 offers phase-segregated short-circuit protection, multipurpose differential protection, overcurrent, and earth-fault protection for a variety of power system assets.

Q: How does the REB611 communicate with other devices?
A: The REB611 supports communication protocols like IEC 61850, SPA bus, Modbus, and DNP3, ensuring seamless integration into modern digital substations.

Q: What assets can the REB611 protect?
A: The REB611 can protect busbars, generators, motors, transformers, reactors, and other critical power system components.

Q: What is the operating temperature range for the REB611?
A: The REB611 can operate in environments with temperatures ranging from –40°C to +55°C, making it suitable for a variety of conditions.

Q: Does the REB611 come with a warranty?
A: Yes, the ABB REB611 comes with a 12-month warranty, providing reliable protection and support for your system.