Between Star-Delta & Star-Star Power transformer which one
is efficent for Earth Fault?

Answers were Sorted based on User's Feedback



Between Star-Delta & Star-Star Power transformer which one is efficent for Earth Fault?..

Answer / vishaljotangiya

star star

Is This Answer Correct ?    37 Yes 9 No

Between Star-Delta & Star-Star Power transformer which one is efficent for Earth Fault?..

Answer / daher

star/star because in the case of line to earth faults the
zero curret IO in delta connection transformer has no path
to leave the close loop of three phases transformer

Is This Answer Correct ?    17 Yes 8 No

Between Star-Delta & Star-Star Power transformer which one is efficent for Earth Fault?..

Answer / guest

star delta

Is This Answer Correct ?    18 Yes 11 No

Between Star-Delta & Star-Star Power transformer which one is efficent for Earth Fault?..

Answer / nidhi

star delta .
because in star star connection solidal grounding should be
provided to ground third harmonics. in star delta whenever
afault will occur then it will circulate only in this delta
not go to the output

Is This Answer Correct ?    12 Yes 5 No

Between Star-Delta & Star-Star Power transformer which one is efficent for Earth Fault?..

Answer / ahmed

star star

Is This Answer Correct ?    10 Yes 4 No

Between Star-Delta & Star-Star Power transformer which one is efficent for Earth Fault?..

Answer / vamsi

star to star

Is This Answer Correct ?    5 Yes 3 No

Between Star-Delta & Star-Star Power transformer which one is efficent for Earth Fault?..

Answer / sunil guru

Star - Star bcz.. it has a point at center which can be
used as a neutral or can be grounded,
but in case of star-delta there is no path for ground
return current during short circuit..an the circulating
current will flow inward itself and can damage the winding..

for any disagreement mail me at parmar20072008@yahoo.com

Is This Answer Correct ?    2 Yes 0 No

Between Star-Delta & Star-Star Power transformer which one is efficent for Earth Fault?..

Answer / rafeek

star-star

Is This Answer Correct ?    1 Yes 0 No

Between Star-Delta & Star-Star Power transformer which one is efficent for Earth Fault?..

Answer / awais

Star star because for earth fault return path is required to complete the circuit so neutral grounded star connection is ideal for such type of fault detection..

Is This Answer Correct ?    1 Yes 0 No

Between Star-Delta & Star-Star Power transformer which one is efficent for Earth Fault?..

Answer / daher

star/star in case of line to ground short circuit in star -
delta transformer their is no path to I0 short circuit
current and it will turn inside the closed circuit of delta
connection

Is This Answer Correct ?    1 Yes 4 No

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