Interested to Buy Any Domain ? << Click Here >> for more details...
what is derated current of power cable & what is formule to
find derated current?
- 1 Answers
- 14289 Views
- Thermon, I also Faced
- E-Mail Answers
Answer Posted / mahesh sali
See , the formula for derated current is nothing bu derated
factor .
Mostly derated factor depends upon the following points.
Way of cable laying i.e. on cable trays / duct / pipe etc(
open to air or into the Hume pipe or under ground )
Cable laying by grouping & having distance between two
cable as per individual manufacturer recommandation .
Each manufacture gives the deration factor for the above
stated point.
Deration means your cable carry the less current below your
rated capacity due the above reason.
take example.
suppose
1.5 sq.mm. cu carrying the current around 12 amp.in open to
air at 25 deg.c ref. temp. as per cable manufacturer
after considering the above stated point
if suppose my deration factor would be around 0.6
then deration current of above cable would be - 12 *
0.6=7.2amp
it means that your cable carry the less cuurent do the way
of laying , temp. cable grouping etc.
i hope above inf. sufficient for understanding
thanks
| Is This Answer Correct ? | 11 Yes | 3 No |
Post New Answer View All Answers
What is A check, B check, C Check & D check for a diesel Generat
in Telecom DC system-why positive +ve is made earthed.and - ve is fed to load.
DIFFERENCE BETWEEN NORMAL TRAFO AND THRISTER TRAFO?
what is positive , negative & zero equivalent system resistance
Define unilateral circuit?
What is the difference between diode and a transistor in terms of the direction of current flow?
What is acsr cable and where we use it?
what are the interview question asked in wind mill about electrical
What is meant by reverse polarity and how it can be fixed?
As we know induction squirrel cage motor torque Directly praprortinal to applied voltage in star connection & delta also. If I connect 55KW Motor to DOL starter in load condition does motor withstand the load & what will be the current withdrawn ? motor will not fail ?
PLZ SEND ME SOME UNIQUE PROJECT OF ELECTRICAL ENG (B.TECH)
why need to be maintain power factor for industrial customer?
Dear friends, i would like to know that what is the exact function of 'exciter winding' & 'aux winding' in Alternator?
When can we take Neutral as common neutral link?
Describe the control mechanism of missile launcher???
