Panasonic KW1M Eco-Power METER, User Manual

Page: 16 / 60

KW1M Eco
－
POWER METER
8
3.2.7 Power factor *only AKW1111
It displays power factor of the load.
・ Press <ITEM>key to display the loads’ power factor.
Sample
Lagging phase Leading phase
・
How to calculate power factor
Eco-POWER METER displays power factor by calculating as below.
Single-phase two-wire
Single-phase three-wire
Three-phase four -wire 1P3W: a=2
3P4W: a=3
Three-phase three -wire
3.2.8 Frequency *only AKW1111
It displays frequency.
・ Press <ITEM>key to display the frequency.
Sample Frequency (Hz)
3.2.9 Hour meter
It displays ON-time and OFF-time of the load.
・ Press <ITEM> key to display the load ON-time or load OFF-time measured by CT1.
・
Press <SHIFT> key to change the load ON-time to load OFF-time.
Sample
ON-time (h) OFF-time (h)
Blinking the decimal point during
measurement of ON-time.
Blinking the decimal point during
measurement of OFF-time.
＊
When load current is under the setting current for time measurement (HM-A), it measures as
OFF-time. When load current is exceeded to the setting current for time measurement (HM-A), it
measures as ON-time. Current for time measurement (HM-A) is set to under cutoff current (CUTA),
all current is measured as OFF-time.
Voltage
ｘ
Current
PF
＝
Instantaneous electric power
a ｘ ｘ
PF
＝
Instantaneous electric power
Average of
each phase V
Average of
each phase A
3
ｘ ｘ
PF
＝
Instantaneous electric power
Average of
each phase V
Average of
each phase A
√