why it is necessary to short and ground of a current
transformer secondary side?
Answer Posted / sheik hussain
if secondary side open ct act as step up transformer so flux
is increased ,for that insulation is not withstand so
vibration and high voltage occurs thats why we should kept
the sec terminals closed condition..
actually ct is not have a pry turn it have only sec tunas,
pry side is like busbar cable conductor ect.,so when s1,s2
is open it mutual inductance is occurs so act as a step up
transformer.. the flux is incresed,insuation get failure
Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
what are the tests comes under the type test, what tests comes under routine tests.
while doing high potential for 11KV 3 core cable how much leakage current will obtain?, what will be acceptance value?
How to calculate energy stored in an inductance?
If increased the frequency up to 1000 then what changes shows in voltage?
what is the relative size of single and three phase?
1)Explain why the cradle guard is used on railway crossing in overhead line construction?
which type of stability limit is higher,steady state or transient? why?
what do u understand about FACTS? how they are useful?
Difference between low impedance and high impedance Restricted Earth Fault
Define newton's law of viscosity.
I HAVE A INCOMING 100A MCCB TPN 25KA, CABLE LENGHT OF 80M 70MM CABLE SIZE FROM MAIN SUBBOARD TO NEW DB.BASE ON THE FAULT LEVEL SETTING OF 45KA.I WOULD LIKE TO FIND OUT 25KA ENOUGH KA. APPRECIATE IF SOMEBODY CAN ASSIST ME WITH FORMULA FOR THIS. FRM: JEFF
Why induction motor is widely used in industry
An ELHNC 80amp 240v 30mA RCD is tripping periodically, every 30 - 180 seconds is it safe to disconnect the protection circuit?
Safety of on line ups
3- What is the target from Zero Impedance, Single Phase Imp., S/C Imp. and magnetic balance tests?