Interested to Buy Any Domain ? << Click Here >> for more details...
while we select CT, why the CT ratio is divided by 5??
ex:250/5,15VA,CLASS-1 CT.Why it is divided by 5??Help me please
- 2 Answers
- 5049 Views
- I also Faced
- E-Mail Answers
Answer Posted / dinesh
CT has primary and secondary, Normally in industries most
of line cable is reffered as primary and your CT coil is
secondary. if you have a CT of 250/5 that means when there
will be a flow of 250A current in your primary side then
you will obtain 5A current on secondary side. Now if you
divide 250 by 5 you will get the CT ratio that is 50. now
if you obtain 3A in secondary that menas 3A mutiply by CT
ratio That is 50 you will get 150A flowing through primary.
your CT is used for protection as well as metering purpose.
| Is This Answer Correct ? | 2 Yes | 1 No |
Post New Answer View All Answers
please explain how to do 'pole drop test' on generator?
How to calculate wire length,size & current? ( related to control panel)
what is meant by the phrase 'static load' in case of shorting in a generator excitation system?
what are the safety measures of induction motor?
what is the disadvantages of common earthing for AC and DC equipment? (i am talking about inverter control room and inverter duty transformer earthing is common...?)
what is thresold of perception
how can we say that stator magnetic field rotates with synchronous speed?can we derive?
star delta starter contorl circuit... drawing..
What will happen if we on 200kvr capacitor bank(11kv in bus)If there is low load on transformer (1.5 mva 33/11 kv)
i want to learn control schedule for 11kv panel? can any one send the detailed control schedule?
we are having 15kw and 3kw motor both can run in same time , instead of using copper we are using ug aluminium cable , 35 sq.mm is suitable for its current carrying capacity..?
How to Decide(calculate) Bush bar size for copper and aluminiam ?
Post possible questions for Power Factor Panel FAT / SAT
control & auxilary circuits used for circuir breakers
i have been tasked with a design of protection, metering and control(PMC) relay panel extension to accommodate all PMC relays.There is an already existing panel where this one will be built.What are the design aspects for this kind of project? thank you.
