how we can select a transformer based on a particular load.
suppose we have 4 motors of rating 40 h.p , 50 h.p, 80 h.p
& 100 h.p. then what rating of transformer we can select.
urgent. pls reply
Answer Posted / eng. ahmed esmail
total HP = 40 + 50+80+100=270HP
1HP=0.746KW
total Kw =201.42Kw
at 0.75 power factor
P= S *P.F
S=268.56 KVA
at 0.85 transformer loading
S=268.56/.85=315.95 KVA
so we will use 400 KVA transformer for this motor loads
| Is This Answer Correct ? | 12 Yes | 2 No |
Post New Answer View All Answers
how does an encoder work???
explain the types of drives
What is the basic principle of welding process?
sir please send me iocl written test paper in my e-mail account. i'll be obliged to you........ thank u roshan
What is Percentage impedence of a transformer? why it is expressed at a percentage? what is the importance of percentage impedence in case of a transformer?
how to choose cable size with respect to load? how to convert cable size in mm2 to sq.mm?
i need the curve duty cycle and amper for (150 kva @50% dyty cycle) transformer turn ratio :19 and vin 400
dg started in plc mode and load taken later one battery terminal connection will be disconnected by loose connection what will happen for dg and shall we connect battery terminals while dg in load time?
how to caculate cable size for diff types of loads? if anyone know the calculating procedure please tell me
If Dg set load increase 25%, How much increase fuel Consumption (15 kva 2 cylinder DG set)
Define filter?
May I know how much values to be set for earth fault, over current and short circuit values at 11kv side? I have 11kv van 1250amps rating. Present it's taking load 80amps?
how freewheeling diode improves the powerfactor
in conventional fan regulators how the current varies with speed?
what does vector group Dyn11 tell us? also tell me how will u differentiate between phase lead and phase lag thru this vector group