REB 670/REB670 | ABB | Busbar Protection Relay | Relion Series

Product Description

The ABB REB 670 is a busbar protection intelligent electronic device (IED) designed to deliver selective, dependable, and rapid differential protection for complex substation configurations. It is part of ABB’s Relion series and is suitable for busbars, T-connections, meshed substations, double circuit breaker stations, and one-and-a-half breaker arrangements.

Key Features

• Differential protection specifically engineered for busbars and complex substation layouts

• High dependability with rapid fault detection and selective tripping

• Flexible application supporting double breaker and one-and-a-half breaker schemes

• Wide current range with overload tolerance for demanding environments

• IEC compliance ensuring compatibility with modern substation automation standards

Technical Specifications

• Manufacturer ABB

• Model REB 670

• Series Relion

• Product Type Busbar Protection Relay

• Rated Current (Ir) 1 A or 5 A

• Operative Current Range 0.2–40 × Ir

• Permissive Overload (Continuous) 4 × Ir

• Permissive Overload (1 second) 100 × Ir

• Burden at 5 A <150 mVA

• Burden at 1 A <20 mVA

• Rated AC Voltage (Ur) 110 V

• Operative Voltage Range 0.5–288 V

• Permissive Overload (Continuous) 420 V

• Permissive Overload (10 seconds) 450 V

• Burden at 110 V <20 mVA

• Frequency 50/60 Hz ±5%

• Input Resistance 1940 Ω

Application Scenarios

• High-voltage substations requiring dependable busbar differential protection

• Industrial power systems with complex breaker arrangements

• Utility networks where rapid fault isolation is critical

FAQ

Q: What breaker configurations does the REB670 support?  A: It is suitable for double breaker stations and one-and-a-half breaker schemes.

Q: What is the overload capacity of the REB670?  A: It can withstand continuous overloads up to 4 × Ir and short-term overloads up to 100 × Ir for 1 second.

Q: Is the REB670 compatible with IEC standards?  A: Yes, it complies with IEC requirements for substation automation and interoperability.

Similar Model Comparison

• REB670: Advanced busbar protection relay, wide current and voltage range, IEC compliant

• REF615: Compact feeder protection relay, IEC 61850 compliant, medium-voltage applications

• REC650: Bay control IED, 132 kV rating, extended HMI functionality