REF615C_C HCFFAEAGANB2BAN1XC Feeder Protection REF615  

REF615 is a dedicated feeder protection relay designed for the protection, measurement
and supervision of utility substations and industrial power systems. Re-engineered from
the ground up, the relay has been guided by the IEC 61850 standard for communication
and interoperability of substation automation devices.
The relay provides main protection for overhead lines and cable feeders in distribution
networks. The relay is also used as back-up
protection in applications, where an independent and redundant protection system is required.
Depending on the preconfiguration made, the relay is adapted for the protection of
overhead line and cable feeders in isolated neutral, resistance earthed, compensated and
solidly earthed networks. Once the standard configuration relay has been given the application-specific settings, it can directly be put
into service.
The 615 series relays support a range of communication protocols including IEC 61850 with GOOSE messaging and Modbus®.

REF615C-E

The relay offers overcurrent and thermal
overload protection, directional and nondirectional earth-fault protection, sensitive earthfault protection, phase

discontinuity protection, transient/intermittent earth-fault protection and three-pole multi-shot auto-reclose
functions for overhead line feeders.
Enhanced with optional hardware and software, the relay also features three light detection channels for arc fault protection of
the circuit breaker, busbar and cable compartment of metal-enclosed indoor switchgear.
The arc-fault protection sensor interface is available on the optional communication
module. Fast tripping increases personal safety and limits material damage within the switchgear in an arc fault situation.