Sequence Control

This feature is used where there are two or more ACR’s on a feeder which can become uncoordinated if the fault is still present when a downstream device trips and recloses.

This is most likely to happen when ACR’s in series are configured for fast first trips and slow second trips in order to coordinate with fuses on spur lines.

Sequence Control causes the ACR to step to the next count in the auto reclose sequence on reset of all protection elements regardless of whether or not the ACR tripped.

The sequence will only advance if Auto Reclose is On and the Single Shot Reset Timer has timed out.