KW1M-H Eco-POWER METER
47
・
Voltage measurement parts
Eco-POWER METER measures the voltage as below.
Display
System
R-V / RS-V
S-V / RT-V
T-V / TS-V
Single-phase
two-wire
R-voltage (P1-P0)
(line voltage)
(Skip)
(Skip)
Single-phase
three-wire
R-voltage (P1-P0)
(phase voltage)
(Skip)
T-voltage (P2-P0)
(phase voltage)
Three-phase
three-wire
RS-voltage (P1-P0)
(line voltage)
RT-voltage (P1-P2)
(line voltage)
TS-voltage (P2-P0)
(line voltage)
Three-phase
four-wire
R-voltage (P1-P0)
(phase voltage)
S-voltage (P2-P0)
(phase voltage)
T-voltage(P3-P0)
(phase voltage)
6.2.5 Electricity Charge
・
It displays the standard electricity charge for the integrated electrical power.
Sample
*When the value exceeds ‘999999’,
[
‐
‐
‐
‐
‐
‐
] will be displayed.
6.2.6 Carbon dioxide conversion value
・
It displays the standard conversion value for the integrated electrical power.
Sample CO
2
conversion value (kg-CO
2
)
*When the value exceeds ‘999999’,
[
‐
‐
‐
‐
‐
‐
] will be displayed.
6.2.7 Power factor
・
It displays power factor of the load.
Sample
Lagging phase
Leading phase
・
How to calculate power factor
Eco-POWER METER displays power factor by calculating as below.
Power factor operation is a method assuming balanced load. The error might be big when it measures
unbalanced load.
Single-phase two-wire
Single-phase three-wire
Three-phase four-wire
1P3W: a=2
3P4W: a=3
Three-phase three-wire
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
√