The insulation resistance of a motor operated by an electronic drive is to be tested using a megger. What precaution should you take? Why?

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yamoms2002 yamoms2002

03-01-2021
Engineering

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The insulation resistance of a motor operated by an electronic drive is to be tested using a megger. What precaution should you take? Why?

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neur13 neur13 · Answer 1 · 2021-01-03T22:45:12-05:00

Use protective gear. Use insulated tools, Wear flame resistant clothing, safety glasses, and insulation gloves, Remove watches or other jewelry, Stand on an insulation mat. 03. Never connect the insulation tester to energized conductors or energized equipment and always follow the manufacturer's recommendations. When installing new electrical machinery or equipment, testing insulation resistance is important for two reasons. First, it ensures that the insulation is in adequate condition to begin operation. ... The test is accomplished by applying DC voltage through the de-energized circuit using an insulation tester. Insulation resistance should be approximately one megohm for each 1,000 volts of operating voltage, with a minimum value of one megohm. For example, a motor rated at 2,400 volts should have a minimum insulation resistance of 2.4 megohms.

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