How to test AC motor resistance test

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Discussion Overview

The discussion revolves around how to conduct resistance and continuity tests on a three-phase AC motor, particularly in the context of testing an electric motor used in a lift. Participants explore various testing methods and equipment, including the use of a Megger.

Discussion Character

  • Technical explanation
  • Homework-related
  • Debate/contested

Main Points Raised

  • One participant suggests using a "Megger" for testing the AC motor, providing a link to a product page.
  • Another participant expresses a need for specific guidance on how to test a three-phase AC motor, particularly for insulation and continuity tests.
  • Some participants question the specifics of the tests being requested, asking for clarification on what exactly needs to be tested.
  • A later reply outlines initial steps for testing, including switching off the motor's breaker and checking voltage readings, while also issuing a warning about the dangers of working with mains voltages.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the specific methods or steps for testing the AC motor, indicating that multiple competing views and uncertainties remain regarding the testing process.

Contextual Notes

The discussion lacks detailed assumptions about the motor's condition and the specific parameters for testing. There are also unresolved questions about the adequacy of the proposed methods and the completeness of the testing process.

rajpaul75
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How to test AC motor resistance test an continuity test for 3 phase
 
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Welcome to PF rajpaul75.

You need a "Megger".

KB_KB_Y560060_PXL.jpg


http://www.megger.com/us/products/ProductDetails.php?ID=217&Description"
 
Last edited by a moderator:
Thanks with megger how to test a 3 phase AC motor.





dlgoff said:
Welcome to PF rajpaul75.

You need a "Megger".

KB_KB_Y560060_PXL.jpg


http://www.megger.com/us/products/ProductDetails.php?ID=217&Description"
 
Last edited by a moderator:
We don't know the specifics of your test.
 
Averagesupernova said:
We don't know the specifics of your test.

I want to test a lift ac motor, if you have sample data please explain how to test
 
There are many many many things about an electric motor to test. Which one do you want to test or do you even know? Do you want a single test to say "Yes this motor is good!"?
 
Averagesupernova said:
There are many many many things about an electric motor to test. Which one do you want to test or do you even know? Do you want a single test to say "Yes this motor is good!"?

I want to know how to do insulation test and continuity test on a 3phase motor.. If you have any website reference please guide me ..I am trying to do this first time for my practical purpose.
 
step 1: switch off the motors breaker, lock it out with your lock, tag.

step 2: check with a volt meter that all (phase to phase) and (phase to ground) readings are 0 volts.

step 3: depends on the test equipment you are going to use.

WARNING: Working with mains voltages can be lethal.
 

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