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mohsinhamid
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Join Date: May 2011
Posts: 91

Locked Rotor Current

09/01/2011 1:30 AM

what is locked rotor current...??/ i searched in internet but i couldnt get the excat explanation....

do LRC is the current which the motor draws during starting of teh motor or draws when rotor gets jammed...????
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Tornado
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Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
Posts: 21017
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#1

Re: locked rotor current...???

09/01/2011 1:46 AM

These two situations are nearly synonymous. Until the rotor of a starting motor builds some speed, it is virtually the same as a stalled/locked/jammed rotor.

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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

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Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
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#2

Re: locked rotor current...???

09/01/2011 3:55 AM

The Locked Rotor Current is the supply voltage divided by the terminal resistance.

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Signode
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Join Date: Aug 2007
Location: Lahore
Posts: 369
#3
In reply to #2

Re: locked rotor current...???

09/01/2011 11:53 PM

If rooter is "Locked" and motor is powered up the drawn current called Locker Rooter current which is 6-8times > the full load current.

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msamad
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Join Date: Feb 2009
Location: Houston, USA
Posts: 946
Good Answers: 244
#4

Re: Locked Rotor Current

09/02/2011 5:52 PM

These links also help:

http://cr4.globalspec.com/comment/628435

http://cr4.globalspec.com/comment/717302

- MS

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