why we are using star connection and delta connection?
difference?
- 5 Answers
- 16624 Views
- I also Faced
- E-Mail Answers
Answer Posted / rao
In a simple way:
Relationships:
Phase current=Line current
Line volage = 1.732*Phase voltage.
In Delta:
Relationships:
Line current=1.732*Phase current
Line voltage = Phae voltage
In Power systems let us say for transportation Delta is
preferable as it has 3 wires only and in distribution Star
is needed as we need Neutral also.So at the end of the
trasmission lines there will be delta/star transformer
provided.
One more thing if you consider the macines point of view
for the same line voltage copper required for star
connection is less compared to Delta as the line voltage in
Star id 1.732*phase voltage. So the winding design is to be
done to bear the 57.7% of the applied voltge which reduces
the dielectic stress and insulation resitance can be saved
interms of money.
| Is This Answer Correct ? | 28 Yes | 4 No |
Post New Answer View All Answers
What is the meaning of dedicated earthing?
i have flexible wire. size of conductors is 0.190 mm & no.of conductors are 48. then size of wire comes 1.37 sqmm instead of 1.5 sqmm . the what is tolerance for this size.
how to find number of run cable laying[LT side] for transformer & alternator secondary side? [above condition for getting output power transformer to main panel side] give the example.
define hysteresis loss, eddy current loss and windage loss
HOW TO CALCULATE HV TEST VOLTAGE FOR ELECTRICAL EQPT.
what is mean by descripiency relay? & wht is its ansi code?
ELECTRICAL DRIVES: can a motor load system with passive load torque can have equilibrium speed in second quadrant
Safety of on line ups
what is kondo syatem in eletrical traction
Can we use Ccapacitive voltage transformer directly for metering purpose?
What is meaning of out of phase (making & breaking) capacity And how to calculate
how invertor convert the dc into ac give brif detail
Battery is a voltage source? give one example of current source and why?
we have require a Motor (1500kW, 6.6kV, 50Hz) which shall operate at 1500rpm during 30min and after it shall run on 500rpm during 15min. The same cycle shall be repetitive during the whole working days. Which method is best and economic to achieve such type of task. VFD, VVFD, Pole changing motor etc.
What is the function of retrip in busbar?
