why we use star connection on the primary side of a
transformer?

Answer Posted / santosh

Always HT volts are the out put of a EHV transformer which is Delta-Delta connection.But in general Distribution transformer,We have HT(11kv) primary side and LT(415v) secondary side. So 11kv should be Connected with delta connection and 415v should have star connection.

Mainly LV/2ndary side connected to home appliances,which is running with 1-phase and 1-neutral.

Is This Answer Correct ?    0 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

If we have use two power cable for incomer, that time how many use cbct for earth leakage protection? 1 or 2 if 1 way? If 2 way?

1649


what is effect of leading power facter on the system and billing

1787


please send privious years question papers of jindal steel and power ltd.My e mail id is rajanikant.sngh@gmail.com

1641


what is auto re-closer?

1999


I need to connect a synchronous generator to the grid using automatic synchronization and two circuit breakers (one for synchronization, one for end connection to the grid), how to determinate the required diameter of the cables?

1743






What happens if i apply 500V to 440V rotary Switch ?

1400


DEFINE BREAKING CAPACITY OF BUSBAR & HOW IT IS CALCULATED?

4792


HOW DO YOU CAN CHECK A 15KV DIODE, WHETHER IT IS OK OR NOT?

1501


Transmission voltage is kept 11KV,33KV,66KV,132KV,220KV due to form factor. What happen to 400KV and 765KV transmission voltage?

1691


what is conductor constant of raccun conductor

1786


Which motor is 3.3 or 11kV more reliable, in terms of efficeancy,maintenance, reliability.

1614


I am doing apprenticeship training at HT switch yard in NLC. How can i get electrical c license. ??? What r the rules for getting it as an apprentice? ??

1375


How the over load setting for HT Motors calculated-provided in Numerical Relay

1202


What is the formula for calculating no-load current?

650


what is the value of combined earthing in general electrical circiut?

1461