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Test Contactor Coil Voltage

0:59
1:17
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What happens here

The student takes the voltmeter and prepares to test the contactor. He correctly identifies the A1 and A2 terminals on the contactor, which are the terminals for the coil (as visually indicated by a graphical overlay showing these terminals labeled on a contactor unit). He then confidently places the probes of the voltmeter onto these two terminals to measure the voltage across the coil. This action demonstrates the correct procedure for checking if the contactor coil is receiving the necessary power.

Goal: Accurately measure voltage at the contactor coil

Tools and materials

  • Contactor — The electrical component being tested
  • Voltmeter — Measuring voltage

What they say

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we'll be done for tonight. We'll be done for tonight. Class will be over if you can do this. Show me how you would test the voltage on this contactor's [music] coil. >> Coil, okay. I'm going to put one on A1 and one on A2. A1 and A2. Yeah. [applause] >> Guys, we're done for tonight. Thank you so much. I hope you enjoyed learning about contactors. Uh it's the next level up from the vanilla ice cream of the

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