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Question
why normally Generator rating are between 11Kv to 22Kv?
 Question Submitted By :: Electrical-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
You can have generation voltage less than 11kV like 3.3kV,
6.6kV etc but normally not more than 22kV because at higher
voltages rotor insulation at high speed is practically very
difficult to manage.
 
Is This Answer Correct ?    20 Yes 4 No
Ajay
 
Answer
# 2
Generator current depends on the power out put, if the
power is more current will be more.Sator current can be
reduced by increasing the genrator voltage, but there is
limit for increasing the voltage due to the insulation of
Stator ie. if the voltage is too high insulation level is
too thick and machine size will be too big and costlier.ie
why generation voltage is between 11 KV to 22 KV.
 
Is This Answer Correct ?    17 Yes 3 No
Vinod
 
 
 
Answer
# 3
The power generation found more economical,when it is
generated in the voltage level upto 15kv.that's why the
generator in the power sector are rated upto 15kv.
 
Is This Answer Correct ?    7 Yes 3 No
Nithi
 
Answer
# 4
now a days power is generated by using powerformers in some
contries at higher voltage. in england on lule river power
is generated at 30KV . and ABB is also planning to
manufacture powerformer to generate powerat 45KV.
morover power is generated at 26KV in mundra by tatapower
 
Is This Answer Correct ?    6 Yes 3 No
Vinod Singh
 
Answer
# 5
in electrical power generation side they produce large
amount of power that means that generator windings carry
very large amount of current for low voltages like 440. if
we use 11kv the current in alternator windings is
reduced....hence usually high range of voltages are used in
power generation side
 
Is This Answer Correct ?    9 Yes 7 No
Raji G
 
Answer
# 6
ONE REASON IS GENERATOR CURRENT AND 22 KV CAN BE FED DIRECTLY TO THE LOAD FOR SMALL POWER REQUIREMENTS AND REDUCTION TO DISTRIBUTION TRANSFORMERS OF 11 KV WILL IMPROVE EFFICIENCY. 
Is This Answer Correct ?    2 Yes 5 No
Ashok Kumar Gupta
 
Answer
# 7
because mostly power is generated between this voltage 
Is This Answer Correct ?    6 Yes 15 No
Gaurav Tripathi
 

 
 
 
Other Electrical Engineering Interview Questions
 
  Question Asked @ Answers
 
In batteries after completion of charging which colour gas is emitted from it? Essar 1
using in R,Y& B PHASE LTSIDE(415V)ct ratio 4000/5 WITH ENERGYMETR OF 1280 REV./KWH,240V.WHAT WILL BE MF OF METRE. HCC 1
can a generator with 15AH specified battery for starting can be connected to a battery of greater capacity?   2
Here iam a question with SYNCHRONIZATION PANNEL related issue, as i want to design a SYNC.pannel board iam giving the 2 nos of 1MVA Generators to sync pannel , then what wil be the out put of the sync pannel, whether it wil be one cable coems from the sync panel or two cables.. as iam using two transformers to meet my load demand, so pls clear me whether two cables comes from sync panel to connect to transformers or only one cable   3
why told ' x ' mer to transformer   1
what is busbar and its function/   2
what is slip resistance? how much its value in 110 kw motor? why voltage is varied in vvvf drive ? Reliance 1
what is slip?   2
what is the distance maintained between the power and data cables with respect to the KVA .... plss give me the formula   1
what is XF 200/240 V AC for Drawout Breaker.   1
In a three phase transformer(delta/star connected)when i touch one end of the bulb in any one phase and other end to earth..will the bulb glow or not..if not why?..i'm touching the bulb in star connected side...   5
WHAT ARE THE DFT AND RMS MEASURMENTS PRINCIPLE IN NUMERICAL TECHNOLOGY OF POWER SYSTEM ?? WHICH IS BETTER IN WHICH QUANTITY MEASURNMENT??   1
 
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