The relay is delivered from the factory with default connections described in the functional diagrams for binary inputs, binary outputs, function-to-function connections and alarm LEDs. Some of the supported functions in REF615 must be added with the Application Configuration tool to be available in the Signal Matrix tool and in the relay. The positive measuring direction of directional protection functions is towards the outgoing feeder.
Standard configurations
Non-directional overcurrent and directional earth-fault protection A
Non-directional overcurrent and directional earth-fault protection and circuit-breaker condition monitoring (RTD option) B
Non-directional overcurrent and earth-fault protection C
Non-directional overcurrent and earth-fault protection and circuit-breaker condition monitoring (RTD option) D
Non-directional overcurrent and directional earth-fault protection, voltage-based measurements and circuitbreaker condition monitoring (RTD option) E
Directional overcurrent and earth-fault protection, voltage-based protection and measurements, and circuitbreaker condition monitoring (RTD option) F
Directional overcurrent and earth-fault protection, voltage-based protection and measurements, and circuitbreaker condition monitoring (sensor inputs and optional synchro-check with IEC 61850-9-2 LE) G
Non-directional overcurrent and earth-fault protection, voltage and frequency based protection and measurements, synchro-check and circuit-breaker condition monitoring (RTD option) H
Directional overcurrent and earth-fault protection, voltage and frequency based protection and measurements, synchro-check and circuit-breaker condition monitoring (optional power quality and RTD option) J
Directional and non-directional overcurrent and earth-fault protection, high-impedance restricted earth-fault protection, voltage and frequency based protection and measurements, synchro-check and circuit-breaker condition monitoring (optional power quality and fault locator) K
Directional and non-directional overcurrent and earth-fault protection with multifrequency neutral admittance, voltage, frequency and power based protection and measurements, and circuit-breaker condition monitoring (sensor inputs, optional power quality, fault locator, interconnetion protection and synchro-check with IEC 61850-9-2 LE) L
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