Recently, your factory got a new plant manager. He’s a micromanager and is trying to cut maintenance costs. He told the plant engineer to eliminate insulation resistance (IR) testing for motors because motors fail anyway so the testing is pointless. He also said to lay off two people due to the decreased workload.
Electrical Troubleshooting Quiz - June 23, 2015
Wanting to save the IR program, the plant engineer gave you a list of 10 failed motors and asked you to explain IR testing for each one.