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 Electrical Engineering  |  Question 69 of 130    Print  
Tranmission and Distribution
Why are we employing star type transformer at transmission end and delta type transformer at receiving end?


  
Total Answers and Comments: 2 Last Update: July 10, 2008     Asked by: nivej1 
  
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 Best Rated Answer
Submitted by: chinnakalupukuri
 
by having the y-type on receiving end, we can get 3-phase,3-wire supply or 3-phase,4-wire supply.we can also get 1-phase supply.b'coz in y-type we have neutral point.whereas in delta type transformer we dont have.

star-delta transformer to step-up the voltage


delta-star transformer to step-down the voltage 

Above answer was rated as good by the following members:
vinay264
April 11, 2008 18:18:30   #1  
chinnakalupukuri Member Since: January 2008   Contribution: 4    

RE: Tranmission and Distribution
by having the y-type on receiving end, we can get 3-phase,3-wire supply or 3-phase,4-wire supply.we can also get 1-phase supply.b'coz in y-type we have neutral point.whereas in delta type transformer we dont have.

star-delta transformer to step-up the voltage


delta-star transformer to step-down the voltage 

 
Is this answer useful? Yes | NoAnswer is useful 1   Answer is not useful 0Overall Rating: +1    
July 10, 2008 23:41:06   #2  
luckwithme Member Since: June 2008   Contribution: 4    

RE: Tranmission and Dibution

Delta star transformer used in distribution purpose because of earthfault on star side do no reflect on delta side of winding. Zero phase current is eleminated in delta side of transformer and another reason for delta winding line current = 1.732 * Phase current so we can save copper in delta winding.


 
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 Related Questions

View Question | Asked by : Harshal Chudama Mahajan

Why are we employing star type transformer at transmission end and delta type transformer at receiving end? 
Latest Answer : Delta star transformer used in distribution purpose because of earthfault on star side do no reflect on delta side of winding. Zero phase current is eleminated in delta side of transformer and another reason for delta winding line current = 1.732 * Phase ...
Read Answers (2) | Asked by : nivej1


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