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03 / BUYER FAQ
Engineering questions worth resolving
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Q
Can REF615E-D migrate from conventional CT/VT wiring to sampled values?
A
The REF615 platform supports IEC 61850-9-2 LE. The installed communication hardware, standard configuration and substation architecture must all support the intended process-bus design.
Q
Which REF615E-D records shorten post-fault investigation?
A
Its event log, latest fault records and disturbance recorder provide the event sequence, measured values and binary transitions needed to reconstruct a trip.
Q
Can REF615E-D use PRP or HSR without a separate redundancy box?
A
REF615 supports PRP and HSR, but availability depends on the selected Ethernet communication option. Confirm the complete ordering code before treating the relay as a drop-in network replacement.
Q
What must migrate with REF615E-D during an installed-relay replacement?
A
Match the standard configuration, binary and analog I/O, communication option, application logic, settings and station engineering. The short model alone does not define the complete build.
Q
Why does IEEE 1588 v2 matter for REF615E-D event analysis?
A
Precise common time improves comparison of GOOSE activity, trips and disturbance traces across multiple IEDs. The station clock design and relay communication option must be aligned.