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Anonymous Poster

Cable Sizing

05/03/2009 1:17 AM

What should be the Cable Size for the following load?

total power =223 kw

I = 400 A

V = 400 Volt

IK = 120 KA

Distance = 200 meters

please advice
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Anonymous Poster
#1

Re: Cable Sizing

05/03/2009 12:40 PM

Dear Guest,

For deriving required cable size, we have to calculate the allowable voltage drop at starting and running conditions. For that, we need to know the type of load including the power factor, the Switch Inrush current, etc.

Once these data are available, we can derive the cable size keeping in view of allowable voltage drop by using proper resistance/reactance values of various cable sizes and the length of the cable.

regards,

Hitesh Shah

OMAN
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jack of all trades
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#2

Re: Cable Sizing

05/03/2009 3:23 PM

please advice

If this is homework, do it yourself. If this is for a job get a professional to do it as you do not appear to be qualified.

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agila
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Join Date: Mar 2009
Location: Ras Al Kaimah
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#3
In reply to #2

Re: Cable Sizing

05/03/2009 5:25 PM

you are much wisdom jack of all trades. youcatch lazy people. you get GA.
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wareagle
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Join Date: Jun 2008
Location: Alabama
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#4

Re: Cable Sizing

05/03/2009 7:13 PM

Look in you local code book for a cable with 400 amp ampacity. You information is not correct. 223 kw at 400 volts does not = 400 amps. info missing?
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harry potter
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Join Date: Nov 2008
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#5
In reply to #4

Re: Cable Sizing

05/04/2009 3:03 AM

Even Ik = 120 KA seems mis leading. for such a small feeder, Ik should not be more then 15 KA. max. in any ways.

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Anonymous Poster
#6

Re: Cable Sizing

05/09/2009 12:24 AM

223kw at 400 volt 3 phase=185 amp for 200 meter lenght using cable size 120 mm sq

pvc xlpe cable size
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