How the CT and PT ratings are calculated
Answers were Sorted based on User's Feedback
Answer / ravi
depending up on the number of windings in primary and in
secondary winding,we can calculate the CT and PT rating of
the transformer.
N2/N1=V2/V1
Is This Answer Correct ? | 13 Yes | 9 No |
Answer / m u shetty
First we should know whether CT /PT is used for measurement
purpose or for protection ,primary currentand voltage
After getting the above details ,we can decide the
specification of CT/PT like accuracy
class,ratio,burden,type etc
Is This Answer Correct ? | 5 Yes | 1 No |
Answer / nagarajan
OK BUT WE WANT MORE DETAILS WITH FORMULA ALSO
Is This Answer Correct ? | 1 Yes | 1 No |
Answer / chandrasen mourya
Its Basically the requirement of the client.
ie. The client operationg load along with consideration for
future loads. This gives you the power, now for the Volatge
& current we have to do a bit survey regarding which
voltage level is available in the vicinity & the availibity
of the same from the electricity board. This gives us the
Volatge rating & current is now calculated.
Now we have to see what protection are required & depending
on that we select the no of cores in both The CTS & PTS.
Is This Answer Correct ? | 5 Yes | 11 No |
What is meant by SPS Aluminium pipe in substations? Anyone knows whats this?
what is 33 /11kv transformer bdv
Hi, what is 100 % stator earth fault protection and how it can be achieve by 3rd harmonics and low frequency injection principle ?
What happens if the Capacitive Voltage Transformer Primary neutral is not earthed. There is a CVT between Transformer and source, and the CVT neutral of the transformer is not earthed, does it effect the transformer while charging or does it effect the transformer charging process.
why power of fm is weaker than am?
why we do 2 types of earthing on tranformer ie:body earthing & nutral earthing , what is function. i am going to instal a 5oo kva tranformer & 380 kva DG set what should the earthing value
8 Answers Altrion Technologies,
what is difference between fuse and breaker?
Why the ceiling fan has three blades, why not two,four or five?
defined power system?
what is the difference between scaler and vector control in drive and where it is to be used ?
what is the knee point voltage ? what is differtial rela? what is impedance and % of impedane? what is the postive phase sequance ? negative phase sequane ? and zero sequance impedance ? what is sortcircuit calculaion? why take calculation? define stabilty test ? why? what sentivity test? define merz protection ? what is the burden ? class 5p10, accracy, metering ct take knee point voltage test thet time what heppan why dont take knee point test to metering ct?
what is safety measures of alternator.
10 Answers HP, MNC,