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
- 13355 Views
- I also Faced
- E-Mail Answers
Answer Posted / krishna chaitanya
first u must know that transformer transforms with
no change in power. As its 11 kv on primary side as
per funda you can calculate primary current 53 amps.
P = vi cos fi. A 100/5 ratio ct is enough to measure.
But its always advisable to select equipments with
larger than required ratings. Sometimes u'l see a
300/5 ratio ct.
and vcb, 800 amp vcb is for load. There'l be another
breaker at secondary of transformer with larger than
this amp rating. 800 vcb is provided for a particular
load control.
checkchaitu@yahoo.com
| Is This Answer Correct ? | 1 Yes | 2 No |
Post New Answer View All Answers
Define peak overshoot.
What is Control & Relay Panel? And Remote Control Center?
Hello to all, Please someone can send me HPCL ELECTRICAL Engg. Sample papers to me? Its urjent....my email address is.... raviasiapacific@gmail.com
if sf6 gas low in gis what will happen
What the main causes of transient interruptions on Over-Head Distribution Lines?
How to do cable earhing? whether by grounding Armour to ground or by running extra G.I wire along with cable? which one is preferred mostly amoung them? If the second one is more preferable how many GI wires to be run along with cable (1 or 2)?
how does this job compare with others you have aplied for?
I am a possesor of c licence from 1993. I forgot to renew during the year 1998. During that time I was working at TNEB to till date. Is there any possibility to get renewed? or to apply for a new one?
how to identify vector group of three phase transformer by voltage method?
what is die electric strnth of transformer ?
why zero sequence impedance measurement is not applicable for single phase GT
how we will deside the high voltage value
how does a liquid starter reduce the starting currents?
What is the different between digital phase converter and ordinary phase converter?
what is the use of static frequency converter and static excitation equipment? and where it is employed? for what?
