Interested to Buy Any Domain ? << Click Here >> for more details...
how to calculate current carrying capacity in power cable?
- 1 Answers
- 5377 Views
- I also Faced
- E-Mail Answers
Answer Posted / 7anoter4
It depends on many factors:
For continue load:
insulation maximum permissible temperature: pvc-70 dgr.C
XLPE,EPR-90 dgr.C
conductor material-copper or aluminum
cable routing: open air, in conduit, cable tray, underground
[buried, ducts] and so on.
ambient temperature: air[30-40 dgr.C], earth [20-25]
thermal resistance of the earth
other[like shield losses, conduit losses and other]
In the IEC World IEC 60287 could be a guide.
In USA the J.H.Neher and M.H.McGrath publication could be a
guide:
"The Calculation of the Temperature Rise and Load
Capability of Cable Systems"
For short-time[as in short-circuit case]it depends on
insulation maximum permissible temperature[140 pvc, 250
xlpe,epr] ,conductor material and the duration of the load.
| Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
why -48 volts dc used in telecommucation
Why do we avoid electrical conduits in floors at apartments?
How would you relate your key competencies to this position?
how does it help for selection of a transformer.
How we can come to know the substation range,without go through any name plate ?
What is real time power factor control panel(RTPFC)?
What is the formula to calculate distribution transformer De-rating on iron losses basis
Why GRR starts from 60% of motor speed why not less than 60%?
Showing results for capital, machinery, stock,wages, carriage in words, salaries, factory rent, repairs, fuel and power, buildings, debtors, sales, purchases, creditors, return outwords, return inwords, drawings, discount allowed, discount receivable, office expenses, bills payable, bills receivable, cash in hand, cash at bank, office rent comes under debit or credit
What is routh hurwitz stability criterion?
Why derating factor os applied on Cables?
wheather the size of windings in motor and generator are the same
how can i change the rotation of the AC single phase induction motor and show me by diagram
how to calculate vfd o/p voltage by frequency
What is power relay?
