- posted
13 years ago

# 3 phase power system

why we take 1.732 phase factor for calculating power in 3 phase system?

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- posted
13 years ago

link_harji expressed precisely :
Root 3
3 phase
120 degrees
Go back to your text book and you will find the relationship of these.

It always comes out 1.732

It always comes out 1.732

- posted
13 years ago

In article
,
l> why we take 1.732 phase factor for calculating power in 3 phase system?
because 1.732 root three

Approximate Bill

Approximate Bill

- posted
13 years ago

There are two basic ways to connect 3 phase loads. Delta and Y
In either the applied line voltages are 120 degrees apart
In the delta the line voltages are the same as the phase voltages as the
loads are connected line to line
In the Y, the loads are connected line to neutral so that the phase
voltage is line voltage/root(3) or line voltage/1.732
In the Y the phase current is the same as the line current but in the
delta it is line current/1.732
The total power in a resistive load is 3 times the power per phase that
is P=3Vphase*Iphase =(3/root(3))

***Vline***Iline =1.732Vline* Iline in either case Work it out or look up references on 3 phase.