I have 30KW Motor Starter Panel, System voltage is 480V, So i have to convert voltage 480 to 220V to give the contactor coil. How i can select control transformer, Which rating transformer i can use this panel, what is the procedure, please tell me.
Answer Posted / santhosh(adityabirla group)
transformer selection calculation
A=KVA*1000/V*1.732
ex: ur amps:36
volts :480
calculate ur KVA
Ans:29.92
selact :30KVA
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
What is the direction of current flow in ct secondary...means if the current is flowing from P1 to P2 then what will be the direction of current flow in ct secondaryw
difference between ac series and parallel circuit
why the pf of semiconductor device is improved the electrical devices
What is meant by analogous system?
What is electrical grounding?
What is different bewteen low or high impedance busbar protection scheme
when the Transmission and Distribution network where is the "feeder" lines are located? and why should be used in T&D network.....
How does a television work?
what happens to the supply voltage if there is any change in frequency?
Why reactive power is needed in a power system? How is it being absorbed or delivered by alternators? For reactive power control we are changing excitation but reactive power absorbing or delivering related to stator. How these two are interlinked? i want a detailed explanation with necessary expressions and figures?
How 48-relay (incomplete sequence) functions?
what kn of disc is used in 33kv,132kv,220kv,400kv,800kv transmission line
Could u pls tell me the NPCIL electrical engineering interview questions for Executive trainee, and also guide me how to face the interview.
1.Can we use 6.6/11KV 300sq mm xlpe 3core cable for LT use (415 Volt). 2. If we use it for LT then what is the current rating
what is the meaning of number in (11, 31, 61,14, etc. CDG11, CDG31, CDG61, DDT32