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siegfredo c. tabanag
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Join Date: Feb 2012
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Sizing a Generator

07/06/2012 5:58 AM

What will be the standard size of a generator for a 100 kva single phase step-down transformer supply. Is a 125KVA gen-set enough size to this kind of load in a hospital building? Pls. comment.
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electronick
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#1

Re: Sizing a Generator

07/06/2012 7:05 AM

put it this way... how much does cost a 125 KVA gen, and how much does it cost a 200KVA gen... if you had to pay 1k more for the second I would recommend having the second. and then perhaps you could feed 2 steppers

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siegfredo c. tabanag
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#5
In reply to #1

Re: Sizing a Generator

07/06/2012 8:29 PM

Thank you sir, You are correct the price diffrence is minimal as we go higher in KVA ratings for Gen-set. Is the fuel consumption of a bigger gen-set varied much? Anyway we only load the gen-set maybe at most 5-6 times a year. we warm-uped the engine once a week for 10 minutes!!
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luv123
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#2

Re: Sizing a Generator

07/06/2012 7:09 AM

IF YOU CONSIDER 25% MARGIN THEN IT IS CORRECT .YOU SHOULD GO FOR SINGLE PHASE DIESEL GENRATOR.

BUT WHAT IS THE VOLTAGE OF TRANSFORMER PRI/SEC.?
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siegfredo c. tabanag
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#4
In reply to #2

Re: Sizing a Generator

07/06/2012 8:15 PM

Sir, in the Philippines our utilities supply 13.2KV in Primary / 220V secondary. Thank you for your advise. Godbless and more power to you.
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Wal
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#6
In reply to #2

Re: Sizing a Generator

07/06/2012 11:53 PM

125kVA single phase?

Not likely.

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siegfredo c. tabanag
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#7
In reply to #6

Re: Sizing a Generator

07/07/2012 6:49 AM

Yes Sir, this is a single-phase 220V 125KVA transformer, the supplier need to reconnect the generator windings in order to deliver a single phasesupply at 220V, wherein it is clear that our required max. full load current is attained at full load.
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electronick
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#10
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Re: Sizing a Generator

07/10/2012 9:51 AM

Hello luv123 ;) yes, I did forgett to mention the margins! cheer´s again!

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lyn
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#3

Re: Sizing a Generator

07/06/2012 12:58 PM

How to Search the Internet
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nesubra
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#8

Re: Sizing a Generator

07/08/2012 11:04 AM

Can u tell us why are you using a single phase 100kva? what is the type of Load?

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siegfredo c. tabanag
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#9
In reply to #8

Re: Sizing a Generator

07/09/2012 7:27 AM

We are using this generator for a single-phase 220V school building load with night school sked till 10 a.m.
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nesubra
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#11
In reply to #9

Re: Sizing a Generator

07/11/2012 3:04 AM

To select a suitable generator load details is essential...

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electronick (2); luv123 (1); lyn (1); nesubra (2); siegfredo c. tabanag (4); Wal (1)

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