for a 11kv transmission line what capacity of CTs & PTs are
required?

Answer Posted / srinivasan.s

For 11KV line CT ratio was 1200A-600A-300A/1Amp
PT ratio was 11KV/110V
for 11KV CT's PT's minimum 3cores are available
generally 1'st core for metering
2nd and 3rd cores for protection purpose.

Is This Answer Correct ?    3 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Define super node?

818


in 6.6 kv vaccum circuit breaker vaccum bottole vaccum capacity ????

1656


Practical condition in 400KV Sub station:- Breaker(open) , isolator(open), Earthing (close) at both end e.g A & B. Now Open A Stn Earthing than Open B stn Earthing (Which have a 50MVA reactor) , AND suddenly show R,Y,B phase 704KV,573KV,118KV respectively. Que is without closing of breaker how it is possible.???? My Whats app No:07621840498 for Further Discussion. Pls experts suggest.

1701


How will you utilise electrical power? You can start from the generating station.

1533


sir i have a car stereo system and there is jack on him so can u tell me a way to find out their power terminals on the jack or on the circuit board"

1645






role of europe union in UK safety legistlation (electrical safety)

1447


In dc ckt. 24v or 110v, which one is more efficient and why?

1873


My question is whether bellow formula is correct to find bus size for 46kA for 0.5 second & what is RT in bellow formula. formula to calculate the size of busbar to withstand the thermal stresses due to currents with duration of 0.2 sec to 5 sec. Sp = RT( I x I x t) / K Where Sp – is the cross sectional area of bus bar in millimeters. I -    is the value of AC fault current. t -    is the operating time of disconnecting device in seconds. K –  is the factor depending on the material of the conductor, insulation and initial and final temperature. Value of ‘k’ for copper is 143.

1542


solar inverters was not connected to the nuteral link .this nutwral possible to any other systems

1475


why transformer tank is in rectangular shape what happen when it is in step shape

1064


how the characterstics of control valve being done

1562


what are inherent currents?

1655


I have made a 3 phase thyristor full bridge rectifier. But at the moment it is working only for the half bridge operation. Both the half bridges are on operation separately but when i put it into full bridge operation the oscilloscope output is zero. I rechecked that the pulses are correct for each thyristor. what could be the possible reason for this?

1593


why we use Test Terminal Block in 11 KV and 33 KV electrical panels.

1053


it is possible to rotate the DG engine dc starter with wrong polarity connections? why?

1849