user manual

MG500-EU-EN v1.0 7/13
11
DCMotorTest
1. Disconnectthemotorfromtheline.
2. Totestthebrushrigging,fieldcoils,andarmature,connecttheREDleadtothegrounded
motorhousingandtheGREENleadtothebrushonthecommutator.
3. Iftheresistancemeasurementindicatesaweakness,raisethebrushesoffofthe
commutator
andseparatelytestthearmature,fieldcoils,andbrushriggingbyconnecting
oneleadtoeachindividually,leavingthe otherconnectedtothegroundedmotorhousing.
ThisalsoappliestoDCGenerators.
TestingSingleConductorCables
1. Completelydisconnectthecable
undertestfromitssourceand
destination.
2. Connectthetestleadstothe
cableasshownatright.
TestingMultiConductorCables
1. Completelydisconnectthecableundertestfromitssourceanddestination.
2. Refertothediagramsbelowforthreepossibletests.
Core Insulation Sheath Covering
EARTH GUARD LINE
Testing one conductor to
all of the conductors
Testing one conductor
to earth
One conductor to all
minus ground
EARTH
LINE
LINE
EARTH
GUARD
GUARD
LINE
EARTH