Balanced star connected circuit measurements

[Steve Collins]

Measure phase and line voltages.
Measure currents in the three lines and neutral.
Measure total power dissipated in the load.
Calculate total apparent power absorbed by the load.
Determine power factor.
Draw phasor showing voltages and currents.P=P₁ + P₂

Q = √3(P₂ - P₁)

|S| = √(P²+Q²)

θ = tan^-1(Q/P)Measurements taken

V_P = 150V

V_L = 265V

I_L = 2.5A

I_N = 0A

P₁ = 645W

P₂ = 645W

So,

P = 645 + 645 = 1290W

Q=√3(645 - 645) = 0 VAR ?

 

[Steve Collins]

After a brisk walk to the shops in the snow I have realized that this is a purely resistive circuit so there is no Q or power factor.