Answer / mprajaneb

There are mainly two reasons for this. Normally tap
changers are used to improve the LV side voltages. Such
cases the taps are provided on the HV side.
LV voltage= (HV voltage*Nlv/Nhv). So by reducing the number
of turns of the hv side we can increase the lv side voltage.
Also current in hv side is less compared to lv side and
thus the arcing is less for hv side tap changers.

Answer / thiyagarajan

because in lv sides current will be very high it is
difficult for the switching contacts carry higher currents
so tap changers will be always used in hv sides

Answer / veerendra shah

always provide tap changer on hv side becouse
1.hv winding outside the lv winding easily we connect.
2.small current flow through it as compared to lv winding.
3.smoother control of the output voltage bcoz large turn ratio

Answer / pappu

becuase number of turns on h.v. side is large than that of the l.v. side....also the hv winding is placed over the l.v. winding,thats why it is easily to tap

Answer / mohamed

Normaly its connected in the primary side of the
transformer its not a matter of HV or LV why we use the tap
changer? in case of variation in the input output also
varied ( increase or decrease)we need to maintain the
constant voltage at the output by varing the tape we can
get the constant voltage at the output the AVR also used
for the same function

What do you mean by ACB and VCB?

3 Answers   L&T,

In what cases (circumstances)we should apply P controller, PD controller, PI controller & PID controller ?

0 Answers  

define digital electronic

0 Answers  

Why should we use the igniter in the sodium vapour lamp.

7 Answers   ABB, Delphi, Mudhra, NTPC, PICT,

we want install 11KV generator to supply power 12km far from the power house.Load to be fed is 1MW.which conductor should we use and wat will be transmission line losses?

1 Answers   CEM Engineering,

how many types of transformer.

3 Answers   Technocrats,

Dear all, i completed M.E(Power Electronics & Drives) 2011 passed out having 78% so i need job in core side but i don't know how can i receive the calls from electrical companies and i uploaded my CV in naukri, times jobs etc.. In that iam not recieved any mails from good companies so give me best procedure plzzzzzzzzzzzzzzzzzzzzzzzz..... Thanks, K.Linga Reddy Email-id:-lingareddykmthm@gmail.com Ph no:-08015402078

1 Answers  

a 25kvar capacitor bank connected to the secondary side of transformer.then why the capacitor draws more current then rated

3 Answers   TATA,

How is the Depth of Stator Slot being calculated for Synchronous Generator?

2 Answers  

How does a transformer contribute towards the widespread popularity of ac system over dc?

0 Answers  

what are the major & minor faults that occur in an inverter and in UPS ? And how to repair and resolve them ?

0 Answers  

what is the defination of Cable database? What are the points are considered while preparing cable database? Is there any sample available for cable database?

0 Answers