Westermo Pilot Wire RPW600F, User Manual

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5 6621-2260
General
RPW600 Pilot Wire modems are used with RED615 line differential protection and
control IEDs to enable the galvanic protection communication connection over twisted
pair media, better known as Pilot Wire in the area of line differential protection
applications.
Two different variants of the RPW600 modems are available, a master (RPW600M) and
a follower (RPW600F) which always are needed to be used as counterparts in pilot wire
communication link. To enable ease of use, no setting or configuration is needed with
either of the RPW600 modem variants.
Pilot wire link lengths typically up to 8 km with 0.8 mm
2
twisted pair cables can be
applied. With twisted pair cables in good condition even longer distances can be
achieved. The achieved link length also depends on the noise levels in installations.
As important part of the line differential protection scheme the RPW600 modems
fulfill the same EMC- and environmental standards as RED615 line differential protection
and control IEDs. The pilot wire connection in the RPW600 modem caters for 5 kVac
(RMS, 1 min) level insulation against earth potential as a standard.