Interested to Buy Any Domain ? << Click Here >> for more details...
if we want ot select cable size with reference to load
current it take than what is the formula and it is same for
aluminium or copper?
- 3 Answers
- 5880 Views
- I also Faced
- E-Mail Answers
Answer Posted / mahesh sali
while selection of cable u should followed the below steps ;
1) cal. the full load current If.L= ( kw / 1.732 x v x
p.f. )
Assume the voltage drop of system as per application says
for motor it should be 10% Vd = 10%
2) Vd = ( 10/100) * v
3) Vd/ph. = ( Vd/1.732 )
4) R = vd/ph./IF.L
5) R-Rho*L/A
Assume , for Copper cable Rho = 1.72 e-8 Ohm-m
L = Length of cable
Base on the above assumation u can easily cal. the size of
cable.
After cal. the cable size , add. 25% extra in ur cal. the
cable size .
Thanking u
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
Can Anyone suggest the Standards (IEC or IS) for selecting copper current density?
Which thing is maximum in RLC circuit at resonance a)power consumption b)inductive current c)capacitive voltage
i am in need of AC SYNCHRONUS MOTOR 30KW. ANY ONE KNOWS THE MANUFACTURER OF SAME. ALSO MOSFET AC CONVERTER 20KVA CONT.OUTPUT.
primery try cell?
How can two 3 phase transformers of same KVA and Voltage be connected in parallel?
why should the primary of transformer be connected in delta in a heat run test?
what are pilot cells
What is meant by coupling capacitor?
if the armature current in a dc generator is ac ( sinusoidal ) why doesnt the sjhape af armature mmf a sinusoidal (ni) ? armature mmf in case of a dc machine is triangular.
what are the reasons of CT circuit faulty in busbar protection scheme?
Any one who apply for Ferro Scrap Nigam Limited cn join with me at rajuhalder@indiatimes.com or 09669717028
sir i am apearing for nic exam.i dont know exam pattern.can you please send me some model papers
what is the meaning of neutral displacement ???
on a three-winding transformer relationship delta-delta-star, on third winding why the relationship is a star? what are the advantages and disadvantages? Thank you and please help
what is the size of cable for 15kw motor and 85 meter cable length using with vfd
