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Anonymous Poster

reactive load bank

02/08/2009 3:39 AM

Sirs,

I have a 1675KVA,400v,50hz 3ph genset and I would like to test it with full load at 0.8 pf. ie @1340kw. What should be the reactive load to be connected to get 0.8 pf at full load and how can I calculate the power consumption of the reactive load and the size of the cable to be used.

Thanks in advance.
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sb
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#1

Re: reactive load bank

02/08/2009 4:24 AM

Is it homework ?

Nobody tests the Genset as you are asking for.

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jack of all trades
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#2

Re: reactive load bank

02/08/2009 1:32 PM

This does sound like a homework question rather than a real world test that a manufacturer or supplied client would do.

Can you please provide more information on WHY you are asking such a question.

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wareagle
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#3

Re: reactive load bank

02/08/2009 2:18 PM

You have all the information to make the calculation. KVA, KW and PF. Now make the calculation and post it for all the world to see.
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sb
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#4
In reply to #3

Re: reactive load bank

02/08/2009 9:59 PM

I did the calculations then suddenly re-read the forum thread and it struck as a homework. deleted the whole lot of 10 minutes struggle and edited the comment on #1

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craigza
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#5

Re: reactive load bank

02/09/2009 1:12 AM

Hi all,

Funny - you seem to have got to calculate the power. Very strange that you cannot calculate the load or the cable size required?

Smell a rat here. For cable sizing please refer to other posts within the forum. For the calculation you could perhaps refer to your text book, or if you really feel lazy try google?

Regards,

Craig
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Anonymous Poster
#6

Re: reactive load bank

02/27/2009 12:45 AM
Rating of generator=1675kVA
Voltage=400
PF=0.8
Maximum kW to be test=1340kW
Current=2418Amps
Cable size required=3Cx4Rx 400sqmm
According to NEMA Bus duct of 3Cx2Rx200mmx20mm can be used for this
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PWSlack
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#7

Re: reactive load bank

09/25/2024 6:21 AM

<...how...calculate the power consumption of the reactive load and the size of the cable to be used....>

Simple. Apply the content of British Standard 7671, which gives full protocols for cable sizing. That's what a qualified Electrician would do.

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