Answer / venkatraman.s

hi friends, this question is most important one for all interview. ans is HT side voltage is high so current is low but LT transformer secondary voltage is low current is high,so we are not connected more cables in TB side so we are using bus bar. its formula is KVA/1.732* volage(HT OR LT)

Answer / perladelsur

As far as I know the reason for that is due to the withstand the dinamic force develop during a short-circuit among other

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Hi, I've just got into my electrical engineering course and I need some help with a question of mine here. During a site visit, we were shown a main LT panel which has switchgears, ammeters and different kinds of relays and the distribution network from that panel. In the main LT panel I've noted down the current readings as Ir - 163A, Iy - 150A and Ib - 147A. The Line to Line voltage is 415 V at 50 Hz and Line to Neutral voltage is 230V at 50 Hz. From the above details, how would I calculate the kVA rating of transformer? The primary side voltage of the transformer is 11 kV and the secondary side voltage is 415V and the frequency is 50 Hz.

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