Answer Posted / jarvis

In any transformer the power and frequency remains constant.So let the current be 5A(say) then power shall be 66kV x 5A=330kVA. if the voltage is stepped down then the current shall increase in order to maintain the power constant and that amount of current can damage the windings.

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can we use CBCT in neutral of solidly grounded transformer? in place of three phases we can pass only one phase which decreases the size of CBCT?

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Dear sir, my knowledge about cable size determination is limited. Though I read examples I could not calculate the Cable size required for electric driven pump 40 KW, 380 Volt, 50 HZ, 50 meter from transformer and it is three phase star delta starting. Please help as there is no one in my surroundings to help.

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A d.c. Shunt motor is found suitable to drive fans because they require?

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