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JBK
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Join Date: Jun 2011
Posts: 32

Effect 380V, 50Hz Motor to be Fed from 400V, 50Hz Supply in DOL Mode

04/06/2013 8:52 AM

Hi?

Please review the following conditions.

380V, 50Hz motor to be fed from 400V, 50Hz supply in DOL mode.

I would like to know any expected bad impacts on motor in this condition.

Please advise it. Thanks.
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Pathfinder Tags: motor 380 400 impact
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Fredski
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#1

Re: Effect 380V, 50Hz motor to be fed from 400V, 50Hz supply in DOL mode

04/06/2013 8:58 AM

sure, it's close enough
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Fredski
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Re: Effect 380V, 50Hz motor to be fed from 400V, 50Hz supply in DOL mode

04/06/2013 12:35 PM

to help you understand (in north America) you want your supply voltage to be within 10% of the motors rating (usually on a plate or tag on the motor itself) so you're within the 10% of your 400V with 380V hope that helps you today and in the future
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lyn
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#2

Re: Effect 380V, 50Hz motor to be fed from 400V, 50Hz supply in DOL mode

04/06/2013 9:59 AM

No problem.
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JRaef
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#3

Re: Effect 380V, 50Hz motor to be fed from 400V, 50Hz supply in DOL mode

04/06/2013 12:08 PM

The motor will live a happy, healthy and contented life, fulfilled in its dream to perform useful rotational work to the end of its days.

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7anoter4
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Re: Effect 380V, 50Hz Motor to be Fed from 400V, 50Hz Supply in DOL Mode

04/06/2013 12:57 PM

IEC 60034-1 [Fig.12] states-if frequency is 50-51 Hz- the maximum permitted supply voltage in very good conditions [Zone A] it is up to 400V. Due to voltage drop on the supply cable the voltage at motor terminal will be always less. Therefore, I agree with Jraef and lyn the motor will run in very good conditions.

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PWSlack
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#6

Re: Effect 380V, 50Hz Motor to be Fed from 400V, 50Hz Supply in DOL Mode

04/06/2013 4:34 PM

Don't worry. Chicken curry.

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Sambab
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#7

Re: Effect 380V, 50Hz Motor to be Fed from 400V, 50Hz Supply in DOL Mode

04/07/2013 3:29 AM

There will be no significant effect on the operation of the motor. it is safe to operate the motor at 400V.
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dhayanandhan
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#8

Re: Effect 380V, 50Hz Motor to be Fed from 400V, 50Hz Supply in DOL Mode

04/07/2013 4:05 AM

Dear Mr.JBK,

The current drawn will be less by 5% for the same Load/Power. Voltage wise, No issue as it is safe. Heating Effect on the winding will be less, and so the Winding Temp.Rise will be accordingly Less.

DHAYANANDHAN.S
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Users who posted comments:

7anoter4 (1); dhayanandhan (1); Fredski (2); JRaef (1); lyn (1); PWSlack (1); Sambab (1)

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