why distribution transformer is uesd in Delta/Star
formation?is there any significance in doing this?If yes
then breif?
Answers were Sorted based on User's Feedback
Answer / karthik raman.b
we need neutral point for single phase only star connection we can get this thats why distribution transformer delta star connected
| Is This Answer Correct ? | 16 Yes | 3 No |
Answer / ravi
Significances of Using a Delat-Star Transformer for Sec.
Distribution Purpose:-
1>To Provide Power Supply for AHU(Single Phase) Users.
2>Its easy to step-down the voltages.
| Is This Answer Correct ? | 5 Yes | 4 No |
Answer / deepak
In Delta Vl=Vph, IL=1. In distribution neutral is not
required as such the neutral conductor can be eliminated
thus material as cost saving.
| Is This Answer Correct ? | 2 Yes | 1 No |
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Dear Sirs, I am a technical persons.In one of our Electrical Sub- Station, We have installed three numbers of 1250KVA ,11KV/0.415KV Transformer to feed the Factory load. We have found some abnormality. In one of our Transformers the leakeage current from transformer body to earth through earth continuity wire is almost 86 Amp but in other transformer it is (5-10)Amp. where the load current on three phase and neutral are respectively 1360Amp,1400Amp,1370 Amp & 176Amp. So please any technical person help me about the reasons of this situation and how I can rectify the fault. Moreover,I have measured the earth resistance of the Earth continuity wire which is less than 1 Ohm. Thanks Tapas Barua
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