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balrajbontha
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Join Date: May 2012
Posts: 2

Motor Frequency

05/18/2012 5:36 AM

can i run 50hz 3phase induction motor on 53hz?

can i run 50hz 3phase water pump motor on 53hz?
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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

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#1

Re: motor frequency

05/18/2012 6:05 AM

<sigh> Why not ask the pump manufacturer directly instead of wasting time on CR4?

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SavvyExacta
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#2
In reply to #1

Re: motor frequency

05/18/2012 6:45 AM

Is CR4 ever a waste of time?

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GURUMOORTHY
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Join Date: Sep 2011
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#3

Re: Motor Frequency

05/18/2012 7:15 AM

you may run. Also check frequency tolarence indicated in data sheet. Usually +_2.5% allowed. As said above subject to motor make
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TonyS
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#4

Re: Motor Frequency

05/18/2012 10:01 AM

This is the 2nd time you've asked this question!

You got a very good explanation from JR last time.

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JRaef
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United States - Member - New Member Engineering Fields - Power Engineering - New Member

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Location: California, USA, where the Godless live next door to God.
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#6
In reply to #4

Re: Motor Frequency

05/18/2012 12:40 PM

Maybe he suffers from that mental condition wherein people lose the ability to apply concepts consistently across changes in data.

My wife suffers from it.

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Tornado
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Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

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Location: Richland, WA, USA
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#5

Re: Motor Frequency

05/18/2012 10:31 AM

If it is a centrifugal pump, it will require (53/50)3 ≈ 1.191 times as much power as before. If the motor FLC is not exceeded, this should be okay.

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Users who posted comments:

GURUMOORTHY (1); JRaef (1); PWSlack (1); SavvyExacta (1); TonyS (1); Tornado (1)

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