Interested to Buy Any Domain ? << Click Here >> for more details...
How do you select a cable size(Cu&Al) for a particular load
- 10 Answers
- 33500 Views
- Adhunik, BPCL Bharat Petroleum, Hiecon, TATA, I also Faced
- E-Mail Answers
Answer Posted / gulderaiym
Factors like the length of the cable, resistance, current
being carried by the cable , short circuit current, voltage
drop all come into play when selecting cable to be used.
First calculate the load current
I = P / x V x pf
pf =0,9 according to TCO Standard P-ST-2035, point 9.9
Then find apparent power
For three phase: S = x V x I
For single phase: S = V x I
Then I find the resistance by Ohm's law:
Z = V / I
V - is particular Load
Then find the short circuit current
I short circuit = S / Z
Then find cable size
S = I sh.circuit x / k k = 143, t = 1
And then select the cable according to the cable catalogs
| Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
some time we open engine breaker 8.0 MW load but plant not trip. and another time engine open 4.0 MW load engine trip why? individually engine breaker open & individually emergency stop why difference?
what is the significance of tan&delta and how it performed in power transformer
Write the analogous electrical elements in force voltage analogy for the elements of mechanical translational system.
what does vector group Dyn11 tell us? also tell me how will u differentiate between phase lead and phase lag thru this vector group
WHAT IS THE CURRENT CARRYING CAPACITY OF 2.5/3 CORE HI TUFF CABLE,WILL IT SAFLEY CARRY 8.6 AMPS OVER 120 METRES,CAN YOU ALSO ANSWER WITH FORMULA FOR WORKINGS OUT ,THANK YOU 3RDYR APPRENTICE.
How i can decide that HVDC line is best for transmission.
sir i ve applied for hindustan petroleum and power grid india ltd..and the exams on feb 22.can you pls send model papers and tell how to prepare for those.i need to get into any of these for sure.....
What is the previous name of Cox's Bazar
1.25 kg of hydrogen are burnt with stiochiometric air, the mass of air in kg required is
How to calculate the Efficiency of Chiller
what is the differences between microprocessor and general purpose computer
What is the effect on in Zone and out zone fault if Phase side CT is Vk/2<30 mA and Neutral side is CT is Vk/4<30 mA for Transformer REF protection
in a simple IDMT relay we use neutral point of ct for earth fault then what is the requirement of neutral ct and cbct?
Which cable is use for rtcc control panel
what is meant by neutral compensation factor and where it is used
