State-of-the-art protection - for your equipment and your people
The REB670 IED (Intelligent Electronic Device) is designed for the protection and monitoring of busbars, T-connections and meshed corners from medium to extra high voltage levels. Due to its extensive I/O capability, REB670 protects single and double busbars with or without transfer bus, double circuit breaker or one-and-half circuit breaker arrangements.
It provides selective, reliable and fast fault clearance for all types of internal phase-to-phase and phase-to-earth faults in solidly earthed or low-impedance earthed power systems. At the same time, it maintains complete stability for external faults, even when heavy CT saturation occurs. It can also handle all internal multi-phase faults in isolated or high-impedance earthed power systems.
REB670 provides complete busbar protection including differential protection and flexible software based dynamic zone selection (disconnector replica) integrated in one IED. This enables dynamic CT connections to differential zones, as well as selective busbar and breaker failure tripping, disconnector and circuit breaker status supervision. Due to its unique measuring principle, this IED has very low CT requirements compared to other numerical differential protection.
Relion® – Complete confidence
- REB670 operates correctly for all types of faults
- REB670 provides maximum safety for your substation personnel
- REB670 enables significant savings in configuration, setting, erection, commissioning and maintenance costs as well as in space requirements
Busbar protection REB670 IED belong to the Relion® protection and control product family. The Relion product family offers the widest range of products for the protection, control, measurement and supervision of power systems. To ensure interoperable and future-proof solutions, Relion products have been designed to implement the core values of the IEC 61850 standard. With ABB’s leading-edge technology, global application knowledge and experienced support network, you can be completely confident that your system performs reliably – in any situation.