Interested to Buy Any Domain ? << Click Here >> for more details...
why C.T secondary are rated 5A generally?
- 13 Answers
- 47213 Views
- ABC, Bhel, I also Faced
- E-Mail Answers
Answer Posted / arun
The CT has separate primary and secondary windings. The
primary winding which consists of few turns of heavy wire,
wound on a laminated iron core is connected in series with
one of the line wires. The secondary winding consists of a
greater number of turns of a smaller size of wire. The
primary and secondary windings are wound on the same core.
The current rating of the primary winding of a CT is 100 A.
The primary winding has three turns and the secondary
winding has 60 turns. The secondary winding has the
standard current rating of 5A;therefore the ratio between
the primary and secondary current is 100/5 or 20/1.The
primary current is 20 times greater than the secondary
current. Since the secondary windings 60 turns and the
primary winding has 3 turns, the secondary winding has 20
times as many turns as the primary winding. For a CT the
ratio of primary to secondary currents is inversely
proportional to the ratio of primary to secondary
turns..this 5A s the standard fixed by the electricity
corporation and they folow t..so its a convention to follow
this standarrdd
| Is This Answer Correct ? | 11 Yes | 19 No |
Post New Answer View All Answers
What is Plank's Law?
what is the power factor used by the PHCN in nigeria? 2. what is the difference between an alternator and generator. 3. Generation of poweris in KV but how is transmission is in MW. 4.If the transmission of power is 20,000MW how can it be increaesed to 80,000MW
what are the tests comes under the type test, what tests comes under routine tests.
Why space heater is required for each verical bus bar chamber? if one space heater is adequate or not for anti condensation?
how can maintaince the acb contactor moveing and fixing kit
Can we transmit digital signal to long distance ?
Can anyone explain me about the RLC based Impulse high voltage generator and how to and operation of Series resonant High voltage reactor...?
ult of expression 'document.FrmQF.myem
Do Phase angle measurement have any application in freq/harmonics measurement? If so how?
why sometime we get electrical shock while touching the ballon of dish tv connection ? which we should not get.
what is the difference between delta delta and star delta connection transformer? why we use delta delta transformer since it need earthing transformer for grounding?
What is measurement?
best manufacturer for busbar for outdoor switchyard having double bus bar scheme, can any one share technical specification of busbar. 132kv voltage ?
If only R Phase is connected in 2 pole elcb, n is not connected than it will work or not in ground fault.
What is the HVDC Transmission System? What are the conditions applicable to lay an HVDC Line?
