what happend if the protection ct is by mistake put instead
of measuring ct & vice versa?
Answer Posted / kajanijam
If we use protection CT for metering purpose,its core has high saturation point.if any fault occurs, the core is not saturated.so it will damage the meters connected to CT secondary
and if we use metering CT for protection purpose,its core has low saturation point,so CT core saturated low value of current,so relay will be inoperative
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
I'm generating a pulse of 3V with frequency 80Hz (12.5ms time period) and pulse duration 0.125ms and feeding it to a transformer since i want the pulse to get amplified around 60V. At the output amplification s happening but the pulse is changed to a spike, can you tell me what could be the reason? (an ordinary transformer 220V-12V stepdown transformer is reverse connected ie. now it is 12V-220V stepup and voltage amplification happens)
Can the output voltage of a rectifier be greater than the input AC voltage without the use of any voltage multiplier in the circuit??please provide the explanation too..
Which do you think is the most significant cause of energy loss in a factory?
Hi Everyone ! My Name is Hakim ullah khan please i need formula of Cable Rating because i want to calculate by self without check any Table Chart... Thank you.....
What is method of calculating the fault current for a MDB, 50KW, 3PH, 415V, 50HZ?
Dear all i want to know SEWA Electrical Supervisor Licence test Previous Year Questions ? If any body know please send to me zohairaukllah@yahoo.com
what is the difference between Power and Distribution transformers ?
How Can You Relate Power Engineering With Electrical Engineering?
What is the purpose of using busbar mounting fuse?
Define gain margin?
What is a parabolic signal?
Is there a standard depth of gravel fill in Substation Switchyard? Please give a design/drawing. Thank you.
Why is the frequency not changed during transformation of electrical energy in a transformer?
how does the terminal voltage of transmission lines increase when a capacitor is connected???? This happens not only in transmission lines but also in all circuits. How??? When a capacitor is connected in a transmission line, capacitor also takes energy from the same supply. But how is it able to increase the terminal voltage??? Practically What sequence of events happen during increase in voltage???
HOW WE CALCULATE CURRENT IF THERE ARE NOT PRESENT ANY AMMETER OR MULTIMMETER??????