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What is the main difference between a single phase transformer and a three phases one ?

Maintenance Engineering Electrical Maintenance electro mécanique génie électrique Ingénierie
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Question added by LABIB KOOLI , Director of the Sectoral Center for Training in Hotel Technologies at Southern Hammamet , Tunisian Vocational Training Agency (ATFP)
Date Posted: 2014/11/08
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abdulrahman Hussein
by abdulrahman Hussein , Electrical Security Engineer , Consolidated Gulf Company (CGC)

Mainly is in the number of windings and terminals, but three-phase is mainly used everywhere. Reasons are as follows: 

1- Low noise due to less pulsation compared to single phase transformers

2- Lower losses

Samjith Paul Vijaya Paul Nirmala
by Samjith Paul Vijaya Paul Nirmala , electrical project engineer , Danway Electrical and Mechanical Engineering LLC.

Different in number of core, winding and terminals

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