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CM52 Network Protector
with Arc Flash Reduction Module
StEP 17 testing the CM52 ARM-IDM
A . Set the INCOM address on the CM52 ARM-IDM by using the
two dials located near the top if the IDM . It is important that this
address be unique and has not been used on any other ARM-
IDM's or MPCV relay (Refer to Figure 18) .
Figure 18. Location of the Dials on the CM52 ARM-IDM
B . Power up the breaker using a 3 phase test set .
Note: For operation of the CM52 ARM-IDM to function, the MPCV relay
must be connected .
C . The following LED's must be illuminated upon power-up:
1 . Power ON
2 . Motor Enabled
3 . Motor OK
4 . Spring Release OK
5 . IDM Trip Enabled
6 . Unit Status (flashes at 1 second intervals)
D . Enable the CM52 ARM-IDM, either with the communications link
or a hard wired switch . The Maintenance Mode LED should now
be illuminated . Once the actual current reaches between 2 .1 &
2 .5 times the breaker CT rating, the Maintenance Mode Trip LED
will be illuminated and the breaker will trip . This rating of cur-
rent cannot be driven by the 3-phase test sets . As long as the
Maintenance Mode Trip LED is illuminated, the motor close of
the network breaker is disabled .
Instruction Leaflet IL02401001E
EAtoN CoRPoRAtIoN www.networkprotectors.net
Effective August 2009
9
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