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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how to setting Load amps tripping time and extra settings for load Transformer protection relay with RMU panel using C&S model relay..?

0 Answers  

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I am mechanical engineer,I need Training in Electrical & Electronics ( i.e. three days workshop training ) Where will I get the same Please suggest?

2 Answers  

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7/20,3/20 electrical wire is specified as stated.Why?

1 Answers   TCS,

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iam working in power plant. In hot places tube lights are glowing at the end portion only. what is the reason for that?

0 Answers  

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If the secondary winding will be open in current transformer, how to damage the insulators

2 Answers   TPDDL,

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What is a HRC fuse (Full form)

26 Answers   Gammon, HRC, Moser Baer,

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Can we use generator transformer as step down transformer? How?

3 Answers  

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my first school?

1 Answers  

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what is the formula to find Amp. for an 3 phase moter both if H.P. or if kW is known?

5 Answers   Uttam,

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how can calculation ate Amps for cabel. Ex-for 1sqmm wire hou many amps we can draw

0 Answers   Videocon,

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Why the transmision line are 11,33,63,132kv?

10 Answers   Power Grid,

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