What is the difference between CT for protection and Ct for
metering?

Answer Posted / arif shah

There is a very important difference between a metering CT and a protection CT. A metering CT is so designed that in case of faults, it will saturate and thus save the instrument connected to its secondary from damage due to excessive current. On the other hand, a protective CT is designed to faithfully reproduce the largest fault current.

Is This Answer Correct ?    2 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

hai...... tis is Hemanth. jst now completed electrical engineering... i wanna to apper for ap tranco exam... plzz send me the previous q's paper link......thanx in advance.

1587


Which motor connection is preferable star-delta or delta-star?

635


block diagram of 2 ups system connected in hot stand by mode?

7495


Why we use 4-20 mA Analog signal for the PLC input? Why not 0-20 mA? Why not 5-25 mA?

2484


what is the generator rating for 40 amp load of 3phase motor.?? 400v voltage of generator... plz tell me with formula its urgent...plzzz... and also tell me that this 40 amp at all phases mean 40 amp on red,40 amp on yellow,40 amp on blue...... or the total sum of that 3phase is 40 amp....

7122






which motor have relatively high power factor and what is reason for have high pf? 1.capacitor run motor 2.shaded pole motor 3.capacitor start motor 4.split phase motor

1490


where we use the SFU & FSU?

1986


Give me the calculation steps to design an electromagnet to be work in 230V 50 Hz AC Supply. Also give force that is created by that electromagnet when it gets energized.

1816


How o select the electrical fuse?.What are its characteristics.How to select the material od fuse?

1483


What types of CMOS memories have you designed? What were their size? Speed? Configuration Process technology?

3145


Is it a better option to procure screw type air compressor rather than reciprocating air compressor?If so, what is the reason?How should we select an air compressor(100 CFM)? Please mention the important parameters of air compressor.

1533


how to avoid Saturation in C.T?

1574


explain transformer ct connection?

1615


I want to know the 'Test voltage' for Tandelta testing of 3.3 / 6.6 / 11 KV Motors. Please explain

1791


In CTs tan delta point should be earthed , what is the reason behind it?

2515