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DC Motor Troubleshooting - Hackspace

DC Motor Troubleshooting Based on the EASA TechNote Troubleshooting DC Motors ALWAYS Disconnect the power before handling any parts of the electrical equipment Lock out and tag out all electrical circuits Test for voltage before touching any components Check for and eliminate the danger of stored energy caused by raised or spring loaded equipment The basic testing equipment you will need to troubleshoot DC motors in the field includes: Megohmmeter AC voltmeter DC clamp on ammeter Ohmmeter DC voltmeter Tachometer Find out if the failed Motor was: 1. Operating successfully for a period of time before failing; or if it was 2.

A DC motor must have 100% field strength to produce its maximum torque and to keep the armature amperage within proper limits. Reduced field strength will cause high armature currents. 1. Test the shunt field continuity by measuring and …

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