M
AVTM24-1J REV A April 2006
28
For personnel safety and to protect the DLRO instrument,
proceed as follows:
1. Firmly connect C1and C2 leads before switching the
DLRO on.
2. Switch the DLRO off before disconnecting Cl or C2
connections.
MEASURING WINDING RESISTANCE
OF ELECTRIC MOTORS
Fig.3B shows hand spikes being used to make contact with
each commutator segment on a large motor.
OTHER APPLICATIONS
Other applications include resistance measurements of
bolted bus bar joints, welded connections, rail joints in
electric traction systems, bonding in RR pipeline and
aerospace applications, etc. The particular application will
determine the type of leads and connections needed. (See
Biddle Bulletin 24-1 for leads recommended for use with
this instrument.)
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