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SUBHASISH MANDAL
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Join Date: Mar 2010
Posts: 6

Technical Parameters Req. For Automatic Power Factor Controller Panel

02/16/2011 7:27 AM

Dear Sir,

What are the technical parameters are required to calculate & manufacture the APFC

panel to bust up the PF to 1.00 or 0.99 in a industy based on motor laods which include momentary jarc load.
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TonyS
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#1

Re: Technical Parameters Req. For Automatic Power Factor Controller Panel

02/16/2011 8:09 AM

Just buy a PFC panel, it will be cheaper than a "home made" concoction!

Guarantied to work within the specification you give.

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

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#2

Re: Technical Parameters Req. For Automatic Power Factor Controller Panel

02/16/2011 12:54 PM

Or forget trying to do this in a single system. Just add PFC capacitors to each offending load, set up to each one only comes on when the motor does. That way you never over correct.

By the way, 0.99 - 1.00 PF is virtually unattainable and ill advised. Better to shoot for .95 and up.

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cuba_pete
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#7
In reply to #2

Re: Technical Parameters Req. For Automatic Power Factor Controller Panel

02/18/2011 2:20 PM

I have been pretty meticulous with my facility, and we usually hover around .97, but I consistently see 1.00 out of my UPS, believe it or not. I don't take full responsibility though, as I am neither a god nor an astrologer.
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iron_59
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Join Date: Aug 2009
Posts: 3
#3

Re: Technical Parameters Req. For Automatic Power Factor Controller Panel

02/16/2011 3:27 PM

technically, having a power factor of 1 in an industry is not advisable specially on motor loads... i.e. having a unity power factor would mean that your inductive loads (motor) will turn to resistive load. in effect, the motor will not run or turn because their is no electro-magnetic field produced. it is advisable that your power factor will be in the range of .9 to .95. however, you can use the formula Kvar required = kvar actual *(tan Ø1 - tan Ø2) for the power factor improvement..
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Anonymous Poster
#4
In reply to #3

Re: Technical Parameters Req. For Automatic Power Factor Controller Panel

02/16/2011 7:15 PM

I've listened to some cobblers in my time but that takes the biscuit!
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kvsridhar
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#5
In reply to #3

Re: Technical Parameters Req. For Automatic Power Factor Controller Panel

02/16/2011 9:49 PM
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cuba_pete
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#8
In reply to #3

Re: Technical Parameters Req. For Automatic Power Factor Controller Panel

02/18/2011 2:21 PM

I see 1.00 consistently and my chillers and pumps run juuuuust fine, thank you very much!
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TonyS
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#6

Re: Technical Parameters Req. For Automatic Power Factor Controller Panel

02/17/2011 12:24 AM
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Anonymous Poster (1); cuba_pete (2); iron_59 (1); JRaef (1); kvsridhar (1); TonyS (2)

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