Hioki 3286 - Page 39

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Chapter 2 Measurement Procedure
1
(R)
2
(S)
3
(T)
1φP, P
1
1φP, P
2
Three-phase effective power P=P
1
+P
2
Power supply side
Load
Red
Yellow
Black
Red
Black
Yellow
Measurement example
P(1φ P) S(1φ P)
R -0.54 kW 2.61 kVA
T 1.98 kW 2.57 kVA
Three-phase effective power
P=P1+P2=-0.54+1.98=1.44 kW
Three-phase apparent power
S=(
)/2 (2.61+2.57)=4.49 kVA
Power factor
λ=P/S=1.44/4.49=0.321