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Why Delta Star transformers are used for Lighting loads?

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Question added by Aneesh Shandilya , Manager/ Lead Electrical , Orpic
Date Posted: 2017/04/22
ganiyu majolagbe
by ganiyu majolagbe , Electrical Engineer , TEAWOO LIGHTING & POWER LIMITED

Why Delta Star Transformers are used for Lighting Loads

Sattar Abdulkarim  Mohamed
by Sattar Abdulkarim Mohamed , Country Sales Director , Ideal Technical Solutions

Distribution Transformer is normally used Delta-Star Connection to get Neutral point as a reference for the neutral line in the secondary Winding of the Transformer and load feeding will be from the phases of the secondary winding with reference for the neutral line and Earthing system.

Abd el-aziz Ghonaim
by Abd el-aziz Ghonaim , Electrical Head , Interwater egypt / Watertec GmbH

  • For lighting loads, neutral conductor is must and hence the secondary must be star winding and this lighting load is always unbalanced in all three phases.
  • To minimize the current unbalance in the primary we use delta winding in the primary So delta / star transformer is used for lighting loads

Muralidharan v
by Muralidharan v , Electrical Engineer , Falaj Al Qaria International Co.LLC

Delta star Tx provides the Neutral point for the lighting and other single phase loads. So it is possible to evenly distribute the lighting loads among the three phases of the star connection, hence we can avoid overloading a particular phase.

Adeel Razzaq
by Adeel Razzaq , Intern , Trafo Panels Private limited Lahore

for lighting load we need neutral wire thats why we need this scheme for proper action.

 

Ruelando Dacusan
by Ruelando Dacusan , Planning Engineer , MANWEIR W.L.L

To give exact load Voltage of the unit. Delta Connection to step up the voltage while Star Connection to Step down the Voltage.

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