Author Topic: Ohm test single phase motor opinion or fact  (Read 531 times)

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Offline WiredSmartTopic starter

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Ohm test single phase motor opinion or fact
« on: March 07, 2023, 02:01:04 pm »
I watched a video whereby someone was testing a single phase motor and chose the first highest reading as the START winding



After googling other articles to help me better explain how to carry out the test i found conflicting results whereby; the highest reading of the windings were between run and start therefore making the start winding the second highest ohm reading .

https://www.electricalengineeringtoolbox.com/2015/12/how-to-test-and-check-single-phase.html

What are the correct readings to focuse on finding the run , start and common winding
 

Offline armandine2

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Re: Ohm test single phase motor opinion or fact
« Reply #1 on: March 13, 2023, 07:52:12 am »
https://www.amazon.co.uk/Electric-Machines-Gordon-R-Slemon/dp/0201077302

Looking through Slemon this weekend, I see the phase split is accomplished with an auxiliary winding with a higher resistance to reactance ratio than the main winding.

It seems, thin wire can be used for the higher resistance only if the auxiliary winding is switched out of circuit after the motor has started.
« Last Edit: March 13, 2023, 08:08:17 am by armandine2 »
Funny, the things you have the hardest time parting with are the things you need the least - Bob Dylan
 


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