ABB
6
Feeder Protection and Control
REF615
Product version: 2.0
1MRS756379 D
Fig. 1 Protection function overview of standard configuration A and B
3. Protection functions
The IED offers directional and non-direc-
tional overcurrent and thermal overload
protection, directional and non-directional
earth-fault protection, sensitive earth-fault
protection, phase discontinuity protection,
transient/intermittent earth-fault protection,
overvoltage and undervoltage protection,
residual overvoltage protection, positive-se-
quence undervoltage and negative-sequence
overvoltage protection. In addition the IED
offers three-pole multi-shot auto-reclose func-
tions for overhead line feeders.
Enhanced with optional hardware and soft-
ware, the IED also features three light detec-
tion channels for arc fault protection of the
circuit breaker, busbar and cable compart-
ment 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.
Summary of Contents for relion REF615
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