Answer / shahin

Because the star point is needed to be grounded. Which
isn't possible in delta system....

Answer / mahesh sali

in order get the neutral point for earth fault protection
and differential protection ct always connected in star,
ct also used for overload protection by measuring the
balance phase current.

Answer / felixraj

for getting phase measurement and protection

Answer / mu

felixraj is correct...........
welldone

Answer / arvindpanchal75

ALL CT'S CONNECTED IN STAR CONNECTION BECAUSE C.T MEASURE THE PHASE CURRENT,

why knee point voltage should be high in Ct for differential protection

1 Answers   NTPC,

pls send previous bhel electrical papers

0 Answers   Siemens,

how to interlock 2 incomer,1 buscoupler MCCB,like we interlock an ACB... pls answer this question and if possible send me the ckt diagram..

2 Answers  

what is the multi strand cable size? 0.45mm is area of one strand & 370nos of strand.

1 Answers  

which is better to use svc or synchronous condenser why ?

0 Answers  

As we know multiplicity factor derivation equation is as below MF = main c t ratio / main p t ratio * meter c t ratio / meter p t ratio * meter dial constant Where in digital meters for HT kwh import export now a days meter constant are calibrated already which is 1 So my question is For HT 11kv 110 v line values are as below Main c t and p t ratio are 11000 v and 110 v and 20/5 means 20 amp and 5 amp Now meter values are 11000/√3/110√3 and primary and secondary amp are displayed as -/5 amp on kwh meter so what will be the MF for this meter ?

1 Answers   NEPC,

what is the diference beteween dedicated earthing & body earthing?

1 Answers  

Why does increasing the magnetic flux in the main field of a d.c motor cause the armature current to reduce??

0 Answers  

Is phenomenon of resonance is harmfull fr the machine? if not or if yes please explain it?

0 Answers   Bhel,

How Load Factor, Demand Factor, Diversity Factor etc best applied in designing an electrical circuit? Is it allowed to consider these factors in each and every panel in an electrical distribution system? Can any body suggest a good book for reference?

0 Answers   Oberoi,

1.Difference between vcb and Acb and partes. 2.Difference between STS and ATS.

2 Answers  

how to calculate the cable size

3 Answers