Interested to Buy Any Domain ? << Click Here >> for more details...
Hi,
I've just got into my electrical engineering course and I need some help with a question of mine here.
During a site visit, we were shown a main LT panel which has switchgears, ammeters and different kinds of relays and the distribution network from that panel. In the main LT panel I've noted down the current readings as Ir - 163A, Iy - 150A and Ib - 147A. The Line to Line voltage is 415 V at 50 Hz and Line to Neutral voltage is 230V at 50 Hz.
From the above details, how would I calculate the kVA rating of transformer? The primary side voltage of the transformer is 11 kV and the secondary side voltage is 415V and the frequency is 50 Hz.
- 2 Answers
- 3899 Views
- I also Faced
- E-Mail Answers
Answer Posted / 7anoter4
The transformer actual load [apparent power] S=0.23*
(163+150+147)=105.8 kVA.
You may calculate approximately taken the average current
(163+150+147)/3=153.33 A and the formula sqr(3)
*0.415*153.33=110.2 kVA [4% error].
But this is not the rated power. The rated power and the
rated current have to be written on manufacturer rating
plates.
| Is This Answer Correct ? | 0 Yes | 1 No |
Post New Answer View All Answers
can the measured percentage error during calibration of single phase energy meter be negative?
What is difference between Harmonic and Non harmonic Capacitor Bank?
What is reactance, reluctance,capistance, pls give answeer in hinglish and be simply Jo asani we smajh m aa jaye
Define piezo-electric effect?
Incoming line 11kv And transformer capacity is 2500kva. Consumption load is 1300A. Then fuse capacity is 11kv line.
RESPECCTED SIR/MADAM- I AM PRERING FOR SECTION ENGINEER (ELECTRICAL) RRB CHANDIGARH PLEASE SEND ME SOME PREVIOUS YEAR QUESTION PAPER OR MODEL PAPER.MY EXAM IS ON (30- NOVEMBER 2008).I AM VERY THANKFUL TO YOU. FROM- HARENDRA SINGH YADAV
How to dimensioning SDCCH, LAPD and CS7 signaling on GSM?
what is the role of energy meter in distribution system ?
What are Contactors? How they works and what its highest rating?
hi friends how 3 phase converter functioning ?what is working principle of rotory phase converter ?
We have 110Vac ,10A ac supply which is converted into 110VDC & How much DC current? which factor is reqired for dc current calulation?
what is (+) and (-) in generator field detector stand for?
hi there i am highly enthusiastic about discussing electrical concepts , and hence i wud lyk to invit al do intrested to join me at gtalk and hav a dscussun of the concepts , ad me as a freind . my email id is rakesh.2k99@gmail.com
i have to install a HT panel, what components, I have to use in this and what will the diagram of that diagram,please tell me each and everything.
What is the difference between PS & metering CT (5p20,0.5 etc.)? Why in PS class CT only Vk is given ? Is PS class CT is more accurate than metering CT?
