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johnny g
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Join Date: Dec 2011
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LRA

12/30/2011 8:46 PM

I need info on lock rotor amps
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lyn
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#1

Re: LRA

12/30/2011 8:51 PM

How to Search the Internet
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Tornado
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#2

Re: LRA

12/30/2011 8:59 PM

The motor nameplate may have a code letter that tells how many times the LRA (locked rotor amps) is compared to the FLA (full load amps); tables are given in the NEC (U.S. National Electrical Code) and motor mfr literature.

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pnaban
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#3
In reply to #2

Re: LRA

01/01/2012 12:33 AM

In American made motor's name plate do they print code letter(LRA/FLA)as well as design code(A,B,C,D etc) to check whether a motor is suitable for the required duty?.

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Tornado
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#4

Re: LRA

01/01/2012 12:46 AM

It is a separate letter from the design code of A/B/C/D (which pertains to torque characteristics). I'm not if sure all motors have it. Here is a reference:

http://www.engineeringtoolbox.com/locked-rotor-code-d_917.html

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PWSlack
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#5

Re: LRA

01/01/2012 5:20 PM

Google it, then.

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PWSlack
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#6

Re: LRA

01/03/2012 8:10 AM

It's the supply voltage divided by the winding resistance.

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