Interested to Buy Any Domain ? << Click Here >> for more details...
why transformer impedance measure in % (percentage)
- 4 Answers
- 8526 Views
- Hindalco, I also Faced
- E-Mail Answers
Answer Posted / 7anoter4
Usually group of transformers presents the same short-
circuit reactance in %
For instance, for S[ rated power] up to 2500 [to 3000] kVA
the percent reactance will be vk%=4-8. Ohmically calculated
reactance will be V^2/S*vk%/100 [ V=rated voltage].
For V=10 kV and vk%=6 for S=500 kVA Xk=10^2/0.5*6/100=12
ohm
For V=6 kV and vk%=6 for S=3000 kVA Xk=6^2/3*6/100=0.72 ohm
As one could see it is more convenient to consider only
vk% instead of ohmic reactance
| Is This Answer Correct ? | 0 Yes | 1 No |
Post New Answer View All Answers
BRIEFLY EXPLAIN THE STORAGE CLASSES AND THEIR TYPES IN C
This is reqd for a 1MW Solar power plant..We have 2DC outputs from the solar panels Connected to 2INVERTOR panels.. Output from invertor is 3ph,280v,500kva,50hz.These are connected to individual ACB.This has to be stepped up to 11KV ,1250KVA SYSTEM.Now can I use (1) one more ACBTO GIVE A COMBINED OUTPUT OF 1000KVA,280V & STEP UP THE OUTPUT BY USING a single two winding 3 ph transformer 11kv/1250kva. or (2)use the two outputs and connect to one three winding transformer of above rating..Pls suggestwith details.
Why only sinusoidal ac voltages are generated?why not triangular or sawtooth?
how can we design robots
WHAT R THE SAFETIES IN A HIGH TENSION PANEL N LOW TENSION PANEL. ALSO WAT SAFETIES R THERE IN A 200 KVA TRANSFORMER?
Is there a possibility to use such a treshold voltage for the NMOS part of a CMOS circuit that during the switching it will start conducting only after the PMOS part will be already closed, by this eliminating the leakedge current? Please note, I'm not asking about the well bias in standby mode, but about the "antileakedge" measures during normal operation.
Define ohm’s law for a.c (alternating current)?
I am experienced with house and industrial wiring but I don't have any licence how can I apply an licence and which type of licence i can get i didn't complete deee just only experience
any one can explain the stages of a knee point which is taken during ct magnetising curve.
iam using DM 3251 voltmeter(1 percent accuracy)for 11KV system PT ratio is 11KV/110V.can anybody explain what is the max and min voltage deviation.
How to synchronization will be done between two DGs ?
why transformer ratings in kva? & DG ratings in kva? & Motor ratings in kw/HP?
diff b/w elcb and rccb
I have 1500/1A CT If i connect this CT in 6.6KV bus bar means what will be the voltage present in CT?
please send me jindal previous aptitude and technical question and answer.my email id is deep_raj@live.com
