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IEC 61850-based connectivity

03 November 2008

ABB’s REF 615 is a dedicated feeder protection relay designed specifically for the protection, measurement and supervision of utility substations and industrial power systems.
The REF 615 has been engineered to unleash the full potential of the IEC 61850 standard for communication and interoperability of substation automation devices. The feeder protection relay suits any distribution network, regardless of the applied power system earthing principle.

IEC 61850-based connectivity
IEC 61850-based connectivity

The REF 615 feeder protection relay offers short-circuit, time overcurrent and thermal overload protection. It also features directional and non-directional earth-fault protection, sensitive earth-fault protection and transient-measuring earth fault protection. The relay incorporates a flexible three phase multi shot auto-reclose function for automatic extinguishing of arc faults on open wire overhead lines.

When enhanced with an optional plug-in card, the relay offers a three-channel arc-fault protection system for supervision of the switchgear circuit breaker, cable and busbar compartment. REF 615 also integrates basic control functionality, which facilitates the control of one circuit breaker via the relay’s HMI or remote control system. To protect the relay from unauthorised access and to maintain the integrity of information, the relay has been provided with a four-level, role-based user authentication system, with individual passwords for the viewer, operator, engineer and administrator level.

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