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A heater capacity is 3.0 KW on 415V . if supply voltage is
380Volt . what is heater capacity on 380volt . and how
calculate and give formulas . Prakash veer singh
Roto power Engg.
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Answer / rajendra
given Volatage = 415 volts, capacity on given voltage= 3kw
solution:-
while 415volts ac supplied than capacity of heater is 3kw
therfore 1volt supplied than capacity of heater will 3kw/415
so on380 volat supplied than capacity will be
3ooo*380/415=2.746kw
the anser will be 2.746 kw heater capacity on 380volts
| Is This Answer Correct ? | 13 Yes | 3 No |
Answer / v
Heater will take more current than it was taking before and
it's losses will increase.However it will give same output
as was giving but with increased lossess and get overheated
soon.
| Is This Answer Correct ? | 8 Yes | 4 No |
Answer / p brown
Lower the voltage will also lower the heater output and amp
draw.
415/380V 3ph.
92% of heater wattagage
96% heater amp draw
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / anil patel
1. Given v= 415v
kw= 3w
formula = w=v*v/R
3000=415*415/R
R=172225/3000
R=57ohm
I=v/R
I=415/57=7.28amp
2. given v=380volt , kw=3
R=380*380/3
R=48.133
I=V/R
=380/48.133
=7.8 amp
| Is This Answer Correct ? | 5 Yes | 7 No |
Answer / elangkumanan
heater =3.0kw
voltage=415v
heater
capacity=380v
formula
3*1000
=---------------
1.732*380*I*0.85
3000
I =-------------
560
I =5.4A
W =415
-----
5.4
= 76WATA
| Is This Answer Correct ? | 1 Yes | 13 No |
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