how to choose the cable rating for load (KW)? EXAMPLE.50KW load
Answer Posted / sunil patil
Given- KW-50
Now from formula I= KW X1000/(V X I X 1.732 X .8)
=86.95 A
Now by refering fenolex cable rating table
For 25mm2 =80A Which is less than our o/p current so we
can select 35mm2 having current capacity is 102A
| Is This Answer Correct ? | 36 Yes | 12 No |
Post New Answer View All Answers
what is the use of current transformer in power transformer secondary side.?its connectyed in WTI
what is two point starter?
any one please tell taht what type questions will be asked in BHEL interview, i am having interview on 24th Dec, please send this to mail pradeepsistam@yahoo.co.in
Good day everyone,currently in our premise we using 30kw slip ring motor with resistance bank which we use as forward and reverse at conveyor bar handling. So,my question is how do we calculate the resistance bank which is suit the motor. Kindly,assist me... thank you
after how many spot we must chang secondry cable in portable spot welding gun?
In Indian Household, generally we receive 220V AC single phase supply. But AC has 2 phases, +ve & -ve. So in +ve half cycle current is flowing...so what happens in the -ve half cycle?? Please illustrate.
how much leakage current is allowed in MC61A L&T make relay?
I'm generating a pulse of 3V with frequency 80Hz (12.5ms time period) and pulse duration 0.125ms and feeding it to a transformer since i want the pulse to get amplified around 60V. At the output amplification s happening but the pulse is changed to a spike, can you tell me what could be the reason? (an ordinary transformer 220V-12V stepdown transformer is reverse connected ie. now it is 12V-220V stepup and voltage amplification happens)
what is meant by power and distribution transformer ?
Can any one give an explanation about rating factors of cable? if we are laying the cable on the air with an temp 15 degree then rating factors will be 1.15 and if we are laying the cable on the air an temp 60 degree then rating factor will be 0.76 please describe it and what is the difference between rating factor and derating factor?
1. What is maximum permissible distance between smoke detectors ? 2. How do we decide number of smoke detectors required in a large office, warehouse, hall etc ? 3. What should be maximum height of smoke detectors ? 4. Where do we use heat detector, optical smoke detector, temperature sensitive detector ?
what is the standard values(Megger test) of resistances between L&N,L&E and N&E for a system on IEE regulations?
I have 1500/1A CT If i connect this CT in 6.6KV bus bar means what will be the voltage present in CT?
How can we calculate the KVA rating of a Distribution transformer from its core details?
What are the material used for inductance coil?