Hioki 3286 - Page 64

49
Chapter 3 Specifications
Function Item Symbol
Operation
Expression
Single-phase power
factor and phase
angle measurements
1φ PF meter (Sine
wave, 50/60 Hz)
1φ power
factor
λ
cosφ
1φ reactive
factor
sinφ
Balanced three-
phase power factor,
phase angle, and
power
measurements 3φ PF
meter
(Balanced three
phases, sine wave,
50/60 Hz)
3φ power
factor
λ(3φ)
For line current I
R
lags U
RS
:
cos |φ-30
|
For line current I
R
leads U
RS
:
cos (|φ|+30
)
3φ reactive
factor
For line current I
R
lags U
RS
:
sin |φ-30
|
For line current I
R
leads U
RS
:
sin (|φ|+30
)
3φ active
power
P(3φ)
[W]
3φ apparent
power
S(3φ)
[VA]
3φ reactive
power
Q(3φ)
[var]
Remarks:
M: Sampling number
n: Sample point number
φ
: Phase difference between line voltage U
RS
and
line current I
R