Interested to Buy Any Domain ? << Click Here >> for more details...
What is the difference between CT for protection and Ct for
metering?
- 16 Answers
- 127755 Views
- BirlaSoft, I also Faced
- E-Mail Answers
Answer Posted / shashi kant
PROTECTION CT CORE is different as compare to Metering CT,
as metering CT SECONDARY is connected to meter to measure
so accuracy is needed ,so the core of Metering CT is
designed or made in such that its core gets saturated on
enmourse increase of primary current, for ex CT with
accuracy of 125% of rated current of ratio400:1, means its
seconary current will never go beyond 1.25amp i.e if the
primary current is 1000 amp,as by the above ratio the
secondary current should be 2.5amp, but in the case of
protection CT as its secondary is connected to relay to
sense the fault current so accuracy is not so important ,
if metering CT IS placed in place of protection ct, then in
case of any fault a heavy fault current in primary of
Metering CT the secoundary output current will be limited
to its rated current (generally 125%) which will be normal
and so the relay may not able to sense the fault
| Is This Answer Correct ? | 12 Yes | 1 No |
Post New Answer View All Answers
1 hp is equal to how much watt?
HOW TO CALCULATE THE HEAT AND LOAD OF LT-SUBSTATION WHICH CONTAINS 2*1MVA TRANSFORMERS,LT-SWITCH BOARD,MLDB,ACB,BUSBAR,ETC,......?
if we have 320KVA Genset kindly advice how much load we can put it.
What are the different types of LT Cables?
what is the minimum winding resistance of 30hp compressor, to run or to switch on
how can I calculate charging current of cable/overhead conductor? what is roll of voltage in it ?
what will happen if multimeter(selector switch at DC voltage) and terminal at current is connected to DC supply?
difrent between vcb acb sf6 and mccb breakers
hello if any one have papers vof hpcl or sail, plz send me
What is meant by impedance? difference between high & low impedance ?
Define norton equivalent circuit?
how to decide the capacity of accl
hai now i am working as a electrical design engineer in construction field can i get a job in oil and gass field or power plant project as a electrical design engineer?
What is the basis for framing the rules of block diagram reduction technique?
what is alluminium arm in ab conductors
