Interested to Buy Any Domain ? << Click Here >> for more details...
i have one transformer 1000kva, 11/.433kv. we are using
200/5 amp. ct unit for measuring purpose, & one 800 amp.
V.C.B Unit for the same t/f operate, i wants to known the primary
current of T/F is only 53 amp. why we used 800 amp.
V.C.B ? & 200/5 amp. CT Unit.
- 4 Answers
- 13353 Views
- I also Faced
- E-Mail Answers
Answer Posted / a k kataria
Well given the rating of transformer as 1000 kva, CT ratio
should have been 100/5. As far as VCB current rating is
concernd,these are generally made for universal
applications and are generally 630 Amps onwards 'cause in
the eventuility of fault ,heavy currents are to be taken
care of.More over increase in the rated current capacity of
breaker adds little to the cost compared to other
components of the breaker.There fore capacity of VCB is OK.
| Is This Answer Correct ? | 2 Yes | 1 No |
Post New Answer View All Answers
Where can I get Iidian straderd specifications for electrical items or works in web? please help me.
can u give me a brief idea about power line carrier communication ??
What will happened if the neutral of secondary of Xformer ( Star point) Note it's above KVA rated Xformer
Why sometime AVR and sometime Booster coil is used in Alternator? what is the diferance between AVR & Booster coil due to which they are selected
Can anybody just suggest about the scope of Electrical design with ETAP software?Just guide me?
delta motor winding resistance I take normally single winding is 2.5, which value is came delta connection ie RY ?
what is control supply rating of a machine
Sir, plz tell me how droop setting is done in parellel operation od DG set ? please give practical example ?
Why temperature rise is conducted in bus bars and isolators?
What is the minimum value of hfe for the oscillations in transistorized rc phase shift oscillator?
why 1.7Uo for HV cable Hi pot test?IE standard why?
Hello seniors m an engineering student in 3rd yr..i want to know what are the software course in electrical field?i wanted to do certification course but i dont know much about the course?..Regards
In cable sizing calculation (determining the max route length of cable) why we choose the shortest length between cable length of full load current Iflc & starting current Istart?
Dear sir my name Ankit i m Diploma holder present working in Welspun Corp ltd Anjar as Asst.engg (salary 14400/month ctc) i Would like to change my company also i have selected in ford India pvt ltd Sanand as trainee Tech with salary 12000/month so please suggest me for changing my job hope for *ve response
What are the differences between single phase and three phase?
