Home › Electrical Engineering Forum › General Discussion › two phase power calculation › Re: two phase power calculation

2011/06/09 at 9:19 am
#12163

Spir Georges GHALI

Participant

**jatin333 said: **

if there is three phase power system we calculate power kw= sqrt(3)*V*I*CosØ so what is formula for two phase system?

Dear Mr. Jatin333

To calculate the power value accordingly to : Voltage, Current, and Power Fcator, we have the following formula :

– For 3 Phases plus or withour neutral :

**P = sqrt(3) x U x I x Cos Ø**

– For 2 Phases :

**P = U x I x Cos Ø**

– For 1 Phase + Neutral :

**P = V x I X Cos Ø**

where :

**U** : Voltage between 2 pahses in ” Volt “

**I** : Current line in ” Amp “

**V** : Voltage between phase & neutral in ” Volt “

Regards.