I want formula to calculate cable size as per load given in
kw & amp.I searched many sites but didn't right answer.Plz
reply me asap.
- 41 Answers
- 411211 Views
- Armco, BEL, BGS, Biocon, BRB Cable, Crystalline Chemical Industries, DLF, Doshion, Electrical, Gold Roof, L&T, Lanco, MEIL, Oman Cables Industry SAOG, PK Services, Polycab, Sabic, SLV, System Electrical, Tata Motors, UEM, UMIC, Vega, Vertex, Voltas, I also Faced
- E-Mail Answers
Answer Posted / premgin
See dear the basic soultion to cable size calculatiion in
sismple form can be done like this
Vd= ( mv* I * lenghth)*100/(400*1000)
I u can calualte from the Kw value for the particular pf
simple P/554
L required length
mV is the volatage drop/amp/km that can be obtained for the
particluar size of cable from supplier
eg. for 4cx16 its around 2.5 for most suppliers
100/400 is just amultiplication factor for converting it in
to 3 phase
Now do calulation and check if voltage drop limit is below
2.5 or 4 as per your standards
Simple.
But be cutious this is the simplest method and suitabel
method,many factors like grouping factor,derating
factor,spacing factor,type of laying,etc has to be taken
for apt analysis
Software like E Tap can also be utilised
| Is This Answer Correct ? | 59 Yes | 43 No |
Post New Answer View All Answers
How to Calculate Current Rating of SDFU (Switch Disconnector Fuse unit) for Protectionof Capacitor Bank connected to Busbar of 800Amp,in LV side of 11/0.433KV, 250KVA Transformer?
list of tests to be carried out at manufacturers end while purchasing a step up transformer of 11kv to 66kv ,2MVa Capacity.
What facility we get after CT secondary earthing and how?
how will reduce the voltage. if 12volt/250ma transformer toreduce 6 volt
Explain the function and difference of Restricted earth fault, simple earth fault and sensitive earth fault with connection diagram.
How to protect a Dosing pumps/any sensitive equipment (single phase) from surge protection inside a food factory.
What are stable systems?
What is the unit of magnetic flux density?
explain wiring system
DG Earth Value?
While HT line put on to activate ACB in low tention panel VCB tripping instantly.why it happens
i need about 10 years of GATE solved papers in pdf format and even mock tests toooo
3ph motor running with unequal kw and different pf what are the reasons
wish of these transformer uses oil?
How to test lightning Arrester?
