Electrical Troubleshooting Quiz - January 19, 2016 stuartmiles99/iStock/Thinkstock

Electrical Troubleshooting Quiz - January 19, 2016

How to determine the root cause of plant motor failures and identify a means to monitor and prevent it in the future.

A particular area of the plant has a high rate of motor failure. The repair techs have noted problems such as burned windings or the grease baked into a fairly hard cake. The plant engineer says heat is the common denominator in most of these motor failures. He wants you to determine the root cause and identify a means to monitor and prevent it in the future.

He said he suspected voltage imbalance, and sent the electrical drawings to an engineering firm; this outside firm confirmed

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