Three Phase System

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Why we use Three-phase not four phases or other

Why we use Three-phase not four phase or other

Three phase power has

several advantages over

single phase power,

including smaller

Transformer size and weight,

and simplified motor construction. Four phase

power, which is actually two

phase power with the

phases in quadrature (90°

apart), doesn't really offer

any advantage over three phase power but requires an

extra conductor. Some

experimental work has been

done with 6 and 12 phase

power, but these have never

been put into common usage. When you consider

the cost of long transmission

lines from the power source,

three phase power is the

best alternative.

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I am Kashif Mirza, the founder of Student Training Lab (STL). I am working on projects since 2005 before that I just search things and now I am sharing my knowledge through this plateform.

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