Answer / p.k.ghosh

50 Hz frequency is the britis system and every component is
manufacturing since that time it self to work by this
frequency.
We know that Ns=120f/P or f=Ns*P/120, P=2,4,6,8 etc. & Ns
we can adjust by adjusting the speed of Engine which
coupled with alternator so that f comes to 60 or other
frequency.Hence it is possible to generate the frequeny
other than 50 Hz.
Now if f = 60 or others, then loss will be vary
accordingly, insulation / dielectric loss,dimension of the
all equipment, all machines which is using for manufacture
of electrical component has to change. In other words all
the existing M/Cs has to modified from root it self , which
is not possible for a single day. Hence excisting m/cs are
using at 50Hz.

Answer / venu

we can not use bcoz our generation is 50hz, if u want more
than 50hz means change the generation and design of all
alternator in india

Answer / guru prasad

bcoz in india all madchines operated at 50 hz
frequency are genarated only

Answer / waqas ashraf

there are two standards
1)220v & 50hz
2)110 & 60hz
if we use 220 & 50: benefit is that we have high voltage &
low freq...disadvantage is that high voltage(220v) can cause
serious life damage risk.
&
if we use 110 & 60 :benefit is that we have less voltage as
compared to 220 but high voltage than 50 hz...
so life risk decrease in 2nd case...

Answer / pradeep

There are two standard
1-220v & 50hz
2-110 & 60hz
In india we use 220v .As the voltage increases current decreases.So loss will minimize.And the cost of distribution decreases as we use less diameter of conductor.
So price is the main factor.

Answer / ramesh kumar

50

Answer / sandip

bcoz in india we require 230 volt A.c.

there is a power transformer 66/11kV in delta-delta connection has 5 feeder coming out from the secondary side. One of the feeder in it normally loaded (loaded than other feeder)and this feeder usually trips with double OCR causing the bank transformer to trip. Now if the load of this feeder is put on other transformer then that no problems occurs on that transformer or the load. However normally all the test(IR, PI, short ckt, open ckt,grounding test and other ) has been conducted for this but evertything transformer..... I am not geting what is the actual problem...

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