When we use PT in HT Panel why the ratio is 11Kv/√3/110v/√3
please explain briefly with suitable formula?
Answer Posted / raj
Potential transformers are instrument transformers. They
have a large number of primary turns and a few number of
secondary turns. It is used to control the large value of
voltage.
WORKING:
The potential transformer works along the same principle of
other transformers. It converts voltages from high to low.
It will take the thousands of volts behind power
transmission systems and step the voltage down to something
that meters can handle. These transformers work for single
and three phase systems, and are attached at a point where
it is convenient to measure the
voltage.e.g:11Kv/root3/110v/root3 for delta connection.
| Is This Answer Correct ? | 4 Yes | 1 No |
Post New Answer View All Answers
how to calculate
PLZ EXPLIN ABOUT CLASS PS CLASS CT .WHY THEY R DESINED AND FOR WHAT PURPOSE?WHY OTHER CT CANT BE USED AS PS CLASS CT? EXPLAIN IN SIMPLE LAUNGAGE IF POSSIBLE PLZ GIVE CIRCIT DIAGRAM?EMAIL-RAJ_SINGH_0376@SIFY.COM
why transformer tank is in rectangular shape what happen when it is in step shape
why 1.7Uo for HV cable Hi pot test?IE standard why?
234 MVA Generator 3 phase Short circuit current Values required? Gen set Rating-234 MVA, Gen Voltage-18kv, PF;0.8, Xdv:23.5 %, Transformer Rating-18/380KV, 680MVA,Yndd1 two winding, Step up TR, ZT:35.50 %,X/R 4.33 Gen CB Position, CB open ,Disconnected open, Generator Running Voltage 18 Kv, Bi mistakes generator side earth switch Closed during that time short circuit current level in 3 Phase required, and how to test on site 234MVA Generator Short circuit current,
How to arrange a hous hold earthing system to keep minimum earth resistance( below 7ohms).
how to select overload-relay for perticular motor 1.for D.O.L. starter 2. for Star-delta starter ????
What does the term supermesh means?
What is meant by control system?
Basic motor transformer generator
why motor range is available 22kv,30kv,37kv,45kv and so on? why motor range is not available 21kv,24,25,26,27kv and so on?
what is the minimum winding resistance of 30hp compressor, to run or to switch on
how synchronous condenser is used in place of synchronous generator with out negotiating IEEE standards? Can i use 3 generators as synchronous generators and 2 generators as a synchronous condensers in an IEEE 14 bus system with out disturbing the standards?
how to failure indution motor insulation & how to improve heat in motor insulation
How can we calculate the transformer rating if the load calculated is 1000KW (11Kv Supply)?