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4 pole vs 6 pole 1ph motor for fan

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Discuss 4 pole vs 6 pole 1ph motor for fan in the Electrician Talk | All Countries area at ElectriciansForums.net

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Tony Way

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Being asked to install a 500mm plus diameter ventilation fan on a 1ph system.

What are the benefits/considerations between 4 pole and 6 pole motors?? Because I don't have a clue!!:confused:
 
If its an induction motor syncronous speed will be affected by no of pole pairs ie

syncronous speed = (frequency of supply * 60)/no of pole pairs
 

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