Hioki PW3360-20, Instruction Manual

Page: 192 / 224

12.5 Calculation Formulas
184
* Subscript c: measurement channel
Displace-
ment power
factor
DPF
PF/Q/S
(fundamen-
tal wave
calculation)
DPF
1
DPF
1
DPF
2
DPF
1
DPF
2
DPF
3
DPF
c
= si DPF= si
• The component si indicates lag and lead. The sign of reactive power Q (fundamental wave
reactive power) is used.

Positive sign: Lag [Display indicates LAG, and output data is positive.]

Negative sign: Lead [Display indicates LEAD, and output data is negative.]
• (1): Harmonic calculation fundamental wave (1st order)
• When Sc
(1)
= 0, DFP = over.
Power factor, Displacement power factor
Wiring
setting
Item
Single-phase
2 wire
Single-phase
3 wire
Three-phase
3 wire
Three-
phase
4 wire
1P2W 1P3W 1P3W1U 3P3W2M 3P3W3M 3P4W
P
c 1
 
S
c 1
 
------------
P
1
 
S
1
 
----------
Electric energy
Wiring
setting
Item
Single-phase
2 wire
Single-phase
3 wire
Three-phase
3 wire
Three-
phase
4 wire
1P2W 1P3W 1P3W1U 3P3W2M 3P3W3M 3P4W
Active energy
(consumption)
WP+ [Wh]
WP+= ( + )
• k: Calculation unit time [h]; h: measurement duration
• P(+): Only the consumption component of active power (positive component) is used.
Active energy
(Regenera-
tion)
WP- [Wh]
WP-= ( - )
• k: Calculation unit time [h]; h: measurement duration
• P(-): Only the regeneration component of active power (negative component) is used.
Reactive
energy
(Lag)
WQ _LAG
[varh]
WQ_ LAG = (LAG)
• k: Calculation unit time [h]; h: measurement duration
• Q(LAG): Only the lag component of reactive power is used.
Active energy
(Lead)
WQ _LEAD
[varh]
WQ_ LEAD = (LEAD)
• k: Calculation unit time [h]; h: measurement duration
• Q(LEAD): Only the lead component of reactive power is used.
k
P
1
h

k
P
1
h

k
Q
1
h

k
Q
1
h
