Hioki 3197 - Page 193

Appendix 9 Definitions
A 17
A
Also, under these conditions, the sums of the voltage and current vec-
tors is always zero, so,
|
U

3
| = |U

1
− U

2
|
|
I

2
| = |−I

1
− I

3
|
are calculated internally to obtain measurements of the voltage and cur-
rent of the third phase.
For
U

3
and I

2
, measurement is performed regardless of distortion. These
values affect the values of 3-phase apparent power and power factor.
With the 3P3W2M wiring configuration mode of this instrument, the T
phase current of the three-phase lines is applied to I2 in each circuit, so
the T phase current of the three-phase lines is displayed as current I2,
and the S phase calculated value of the three-phase lines is displayed
as I3.