what is derating factor in Cable ? how we minimise this?
- 18 Answers
- 113108 Views
- Bhel, College School Exams Tests, I also Faced
- E-Mail Answers
Answer Posted / dev bala
derating factor depents on withstand level of ambient
tempreature,when it increase at tat time resistance of
cable is increase so current carrying capacity of cable is
decrease so it will derate the cable rating..
then based on the cable fixed in a cable tray and the
distance between the cable in tray...
| Is This Answer Correct ? | 32 Yes | 14 No |
Post New Answer View All Answers
how to calculate the cable current ratingand and how much of distance the rating will be ok will the distance is incresed what the action we take
what is sevice settings for mccb?How can be it setted?
please send me latest & previous years question papers for IOCL Technical level questions
Why does the rotor rotate?
which IS or IEC is used for earthing,breakdown voltage of transformer oil, hv/pd testing and all type of electrical testing
How to calculate Number of Earthing Pits....???
a 230v transformer with step down ratio 19:1.it has 2000turns on primary and rated 25va calculate max primary current no of secondary turns volts/turn
1 “earthing” for bonding of equipment and circuits to common plant earth electrode potential, 2 “protective earthing (PE)” when this bonding is required for personal safety provisions 3 “grounding” for interference suppressing bonding of screens, sys-tems with ground level 4. low-impedance earthing ? 5.primary earthing system and secondary earthing system what is that? 6.earthing electrode or mesh net earthing electrode ? very confusing , simple but very informative help required ? i will be very very thankful to you guys.
During regenerative breaking= A rotating magnetic field is reversed B slip is positive C torque is positive D slip is negative
what is the difference b/w absolute encoder and incremental encoder?
delta motor winding resistance I take normally single winding is 2.5, which value is came delta connection ie RY ?
what is the method of earthing of a transformer using electrodes?
How DC earth leakage currents can be reduced ?
What kind of Neutral CT can be placed in 11/0.433KV transformer to be used and what are its specification?
i have a 1500kVA transformer what is the kWH meter i need to use?
