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Can Harmony 3 phase control relays be used to monitor Variable Speed Drives?

Issue:
Can Harmony 3 phase control relays be used upstream or downstream a Variable Speed Drive (VSD)

Product Line:
Harmony Control Relays


Environment:
RM17, RM22, RM35, 3 phase control relays


Cause:
It’s not recommended to operate the RM17/RM22/RM35 products with VFD or VSD systems as the noise interference from the VFD/VSD can cause damage to the contol relay.


Resolution:
Do not connect 3 phase control relay to monitor output of Variable Speed Drive (VSD).

Released for: Schneider Electric Canada
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Range:
Harmony Control Relays
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