Interested to Buy Any Domain ? << Click Here >> for more details...
why the CT ratio secondary is always divided by 5 for eg(
75/5,80/5,50/5)
- 6 Answers
- 16778 Views
- I also Faced
- E-Mail Answers
Answer Posted / iamdon
CT is used mainly for Instrumentation(Measurement and
protection system) purposes thats why it is also termed as
instrument transformer.The measuring and protecting devices
are not rated to sustain high currents.What a CT does is,
it lowers the current in secondary side so that measurement
as well protection can be done at a reduced level of
current.
The digit in CT ratio of secondary side is IS standard for
rated secondary current so that uniformity among manufactures
be established.
The various values of secondary currents are
1)in the range of 0-5 amp e.g, 1A,5A
2)in the order of mA(particularly 40mA)in case of digital
devices for measurements and protection.
Perhaps Shayam had ingnored this fact.It cann't be any
number.
Author:arbelectbit@yahoo.com
| Is This Answer Correct ? | 15 Yes | 2 No |
Post New Answer View All Answers
distribution transformer de-rating formula on over limit iron losses
why do we have spikes enough to burn electronic boards, when generators are not grounded
how can we find thae value of capacitor for single phase motor. what is difference between starting capacitor and running capacitor.
1) why a dg set shows variation of power factor and load when synchronised with other dgs? 2)Why the load sharing is not become equal in all dgs?. 3)When a dg set will not run on auto start?
What is VCB? where it is installed at SP. What is SP?
PLZ SEND ME SOME UNIQUE PROJECT OF ELECTRICAL ENG (B.TECH)
Which device is used for the source of emission of electrons in a crt?
How to select circuit breakers rating eg. if i select a circuit breakers of capacity 40 amps DC with operating voltage 28 volts and if i what to use same circuit breakers for 300 Volts DC application what is the current rating of this circuit breakers.
Why is voltage is required to be within permissible range for an electrical equipment?
What are m circles?
Does the motor power displayed on the Motor name plate is the mechnical power motor delivers or it is consumed power from the system?
How to justify this statement ??? "Capacitors in series provide less capacitance but higher voltage breakdown rating for the combination"
how test transfomer(3 phase75kva) by megger
why r we using shell transformer for low voltage
how to determine ct ratio in ht vcb?
