Transformer Calculation

Hi,

I believe the rule of thumb i practice is you should not allow > 80% capacity to rated capacity of the transformer or DG to avoid overloading. Besides that DG work ideally in 80% load range and if more load is required, additional DG or bigger capacity DG is required.

Guest

If you can't perform these calculations you may be are in the wrong business.

All these questions have been answered before on CR4. Try a search of CR4 using the search function on the right.

I am however a little concerned you don't know how to size a transformer and you are working in an electrical consultancy (did you specialise in microcontroller programming in your degree and therefore only know the basics of power engineering?). Additionally, we have also covered cable and busbar sizing and protection discrimination here on CR4 too.

Also try the internet as there are vast quantities of free technical books and training resources covering all areas of electrical design to get you up to speed in your new job.

Jack - Adviser of Electrical Consultants (and not just those posting on CR4)

As a "consultant" you should already know these things.

Otherwise your consultations will smell suspiciously like bullsh1t.

a consultant?????????????? basically a consultant have a masters degree or ph degree or an equivalent no. of years of experience in design maybe 5-10 years. maybe read more books to help you

No that is not the case at all (for electrical at least).

A consultant's qualifications and experience vary greatly from consultant to consultant (there is no legal requirement or set standard like being a Doctor of something). Even a newb with no work experience fresh out of University can call him/herself a "consultant" (or "private consultant" if they don't actually work in a consultancy firm).

it is true... If you can't perform these simple calculation... down the road you will face more difficulty as there will be more calculation involved, than these a simple calculation for sizing the transformer & DG, how to Calculate Maximum Demand and Fault level calculation.