Answer / jay

3 CT WITH 3 CORE FOR 3 PHASE
1 PT WITH 2 CORE

Answer / kartheear

3 line PT's prot./meter in 11kv side(before side)
3 prot/meter. CT's at 11kv side(before side)
3 line PT's prot./meter in .433kv side(after side)
3 prot/meter. CT's at .433kv side(afterside)
In each CTs & PTs,ther wil b a seperate core for metering n
protection,dont get confused with the windings in assuming
tat this is for ef,oc and differential,get a CT/PT wit both
metering n protection whatevr d core is depends upon our
application in relays.

Answer / manax

transformer primary side one set (3 nos) ct,pt and
secondary side one set ct,pt required.each ct pt consist 2
core one for metering,one for protection.this LT
Transformer so no need any special protection.

Answer / a.k.mishra

3 ct having 3 core for metering & protection
3 pt for mounted R,Y,B induvisualy for metering & protection
also 1 neotral ct is requried for star connection

Answer / jesudoss

transformer secondary (433v)-3 ct for over current
-1 ct for restrictedearthfault.

Answer / vishal

3 CT's and 3 PT's wil; be required for each phase of transformer

Answer / d.k.sahu

At primary side 3 nos ct for metering & protection,1 no
cbct & 3nos pt.
At secondary side 3nos ct & 3nos pt.
Total ct/pt : 13no

Answer / subu

hi manjunath,
iread your answer but i dont know what is tertiary winding
plz explain that what is the use of that?

Answer / senthil kumar

06CT and 03PT'S

Answer / mubanga mulenga

1 PT, $ CTs

hello friends.. I have a doubt regarding the operation of dc machines.. I studied in a text book that a dc machine can be used as a generator and as a motor.. is this possible? If so,please send me the info about this topic.. you can also send your info to my mail.

0 Answers   Bhel, CVL,

what is the principle of tubelight ??? what is the function of starter and choke ???

1 Answers  

dear all, How do i increase UPS (1000VA)backup time ? i have connected 2 12v wold you please 120 aH battery externally. ups charge the lead acid battery only 12.7 volt. backup time only 10.00 minuts and gose off. can any one of you help me?

1 Answers   Technomax, ups,

what is use of starter motor in DG ?

2 Answers  

what is interference

1 Answers   L&T,

I am going to appear for the RRB Chennai Section Engineer online exam. Please send me the question papers from 2001 to date to my mail id: vsujith_rajan@yahoo.co.in

3 Answers   RRB,

difference between a diode and thyristor?

0 Answers  

why in an electrical lab a bulb connected to supply goes off slowly when the main supply is switched off?

2 Answers  

what difference between thermal and bi-metal over load relay?

2 Answers  

in communication what is the role of elelctrical engineer?

3 Answers   Quippo, Reliance,

i have one transformer 1000kva, 11/.433kv. we are using 200/5 amp. ct unit for measuring purpose, & one 800 amp. V.C.B Unit for the same t/f operate, i wants to known the primary current of T/F is only 53 amp. why we used 800 amp. V.C.B ? & 200/5 amp. CT Unit.

4 Answers  

could i arrange a faulty and healthey battery bank togather in parallel , if your ans is not then why?

3 Answers