12.3 Detailed Measurement Specifications
186
Lag/Lead
display
Uses the sign of reactive power Q (fundamental wave reactive
power).
Positive opposite sign : Lag
Negative opposite sign : Lead
Output data
For SD memory card and internal memory output data, the polarity
indicates lag/lead.
Lag : Positive
Lead: Negative
Power factor (PF, PF/Q/S calculation selection:
fundamental calculations)
This power factor PF is defined as the displacement power factor DPF.
Active energy (WP), Reactive energy (WQ)
Measurement
method
Active power values are integrated separately for consumption and
regeneration from the start of recording.
Reactive power values are integrated separately for lag and lead
from th
e st
art of recording.
See: "Electric energy, Energy cost" (p. 2
04)
Measurement
range
• Active energy
Consumption WP+: 0.00000 mWh to 99999.9 GWh
Regeneration WP-: -0.00000 mWh to -99999.9 GWh
• Reactive energy
Lag WQ_LAG : 0.00000 mvarh to 99999.9 Gvarh
Lead WQ_LEAD: -0.00000 mvarh to -99999.9 Gvarh
Measurement
accuracy
Active power and reactive power measurement accuracy ±1 dgt.
Integration
time accuracy
±10ppm±1sec.
Energy cost (Ecost)
Measure-
ment method
The active energy (consumption) WP+ is multiplied by the unit cost
(per kWh).
Measure-
ment accu-
racy
Calculation from measured values ±1 dgt.
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