What is the need of earthing transformer for delta side of a transformer. (Think of a line section between a star/delta transformer at a grid substation and delta/star transformer at a village. An earthing transformer is there at the delta side of the star/delta transformer at grid substation). As there are no ground reference there will not be fault current if a one phase is grounded. Further L-L phase will be sensed by the primary side of star/delta transformer as a L-G fault. So why an earthing transformer is required at delta side

0 Answers   CEB,

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50 electric bulbs are connected across supply of 220 volts. After one bulb is fused remaining 49 bulbs are again connected to same supply. which case will have more illumination & WHY????????

5 Answers   KJ,

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what is the function of garing capacitir in SF6 circuit braker?

1 Answers  

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what is the effect of power factor of machines in starting current

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what is the mazor difference between the induction transformer and synchonous motor?what is the similarity between them?

1 Answers  

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what is the difference between brushed alternator ,brushless alternator & permanent alternator ?

1 Answers  

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Is 3 phase induction motor can work as a generator?? if so why & how??

2 Answers   Jindal,

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How much water ( Kilo Liters) a submercible pump of 35 HP can lift from Borewell of 6" and 900 feet dip.

2 Answers  

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What is the relation between frequency and motor rpm?

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Hi,Any one has idea regarding the KPTCL Recuirtments for AE'e & JE's for the year of 2009-10???Kindly help in regards..

1 Answers  

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how to calculate kvar in Akiva

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why cable i burning without tripping. how can protect led street lights

0 Answers   Cosma,

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