Technical FAQs

Ask a Question

Phase Monitor RM17 with One LED Light

Issue:
I have an RM17 Phase Monitoring Relay and the out put contacts won't change state.  What could be wrong?
RM17TG00 - No LED lights illuminated
All other RM17T relays only show one LED light illuminated

Product Line:
Phase Monitoring Relays - GIC Product
RM17TG00
RM17TE00
RM17TT00
RM17TU00
RM17TA00

Environment:
US Product

Cause:
Product Application

Resolution:
The most likely cause of this issue is improper phase rotation.  The RM17 series of relays look for rotation of L1-L2-L3.  When the rotation is L3-L2-L1, the relay will not change the output contact state.
The solution is to simply swap any two leads coming into the relay around to obtain the proper sequencing:
Swap L1 with L3 or L2 with L3 or L1 with L2
 
Was this helpful?
What can we do to improve the information ?