Answer Posted / gajanan bharad

I am too seeking right answer, but I know that the calculations above are incorrect. We have to consider the heat generated by BTSs and not the power consumed by BTSs. We have to take into account the heat generated/ rate of heat generation in Watts by all the equipment inside the shelter. There are 48V SMPS, Battery sets, BTSs, Microwave equipment, lights and assume 2 persons working. Heat generated by the SMPS equals input power minus the output power (i.e. loss of energy in terms of heat). But for rest items need the information on heat generated. Then only we can arrive at correct air conditioner capacity requirement.

we have require a Motor (1500kW, 6.6kV, 50Hz) which shall operate at 1500rpm during 30min and after it shall run on 500rpm during 15min. The same cycle shall be repetitive during the whole working days. Which method is best and economic to achieve such type of task. VFD, VVFD, Pole changing motor etc.

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