Interested to Buy Any Domain ? << Click Here >> for more details...
what is derating factor in Cable ? how we minimise this?
- 18 Answers
- 117906 Views
- Bhel, College School Exams Tests, I also Faced
- E-Mail Answers
Answer Posted / ameer reda
derating factor in the cable means reduction in the current carring capacity of the cable
there are many reasons :
1- ground temp derating factor
2-air temp dearating factor
3-burial depth derating factor
4-soil thermal resisvity derating factor
5-pvc rated temp derating factor
6-trefoil or flat formation derating factor for the three and single core cable laid direct in ground
7- trefoil formaion derating factor for multi core cables laid direct in the ground
8-reduction factors for groups or more than one multi core cable in air to be applied to the current carring capacity fore one multicore cable in free air
9-reduction factors for groups or more than one circuit of single core cables to be applied to the current carring capacity for one circuit for single core cables in free air
| Is This Answer Correct ? | 4 Yes | 0 No |
Post New Answer View All Answers
hi friends i m from electrical branch and seeking for tech. + apti. both papers of hpcl plz get it available as soon as possible
What is speed mode?
Define damping ratio.
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
can any one provide me a connection wiring diagram for a DG set control panel along with BOM?
In siemens S7-300 PLC, what is function and function block ? What is the difference between them ? When to use function and when to use function block ?
current transformer balance the power level on both sides. e.g in case of step up, at secondary side voltage rise but current decrease and vice versa in case of step down transformer. but how this power level remains same in case of current transformer and voltage transformer
what is the star delta connetion and how can do it a three phase motor with control witing with picture
what is the maximim current drawn by 1 phase and three phase welding machine
What is the minimum IR value of HT/ LT cable? Pls post separetely!!!!!
what is a bus post insulator? explain its application in a substation.
what is the string efficiency
Define non-touching loop.
Why is tan-delta test and capacitor measurement done on alternator?
Wt is the function of reactive power? How it generates & consume though resultant is zero?
