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5.Operation
5.1 Basic Operation
Active Energy / Reactive Energy Display
■
Disp
lay format
The following table shows the display format of active energy / reactive energy based on the total load.
α
x (VT primary voltage) x (CT primary current)
Total load power[kW] =
1000
※
1.
For the direct voltage setting, the direct voltage is used for calculation instead of
the VT primary voltage.
※
2. For 3-phase 4-wire or 1-phase 3-wire, the VT primary voltage and direct voltage
are calculated using the line to phase voltage.
Display type
Total load
[kW]
Digital Display
Digital Display
Less than 10
10 or higher and less than 100
100 or higher and less than 1000
kWh
(Unit can be changed from
Wh/kWh/MWh.)
1000 or higher and less than 10000
10000 or higher and less than 100000
100000 or higher
888888
MWh
(Unit can be changed from
Wh/kWh/MWh.)
* For reactive energy, read Wh as varh.
■
Example Display
How to change the unit of Wh and varh
When and are pressed simultaneously for 2 seconds, the unit of Wh, varh and VAh will be changed. This will
enable to check the upper digits or lower digits of counts.
Note1: All of Wh and varh change to same unit even if these are not shown on the screen.
Note2: When the setting value of the VT primary voltage and the CT primary current are large, the lower digits less than a measurement
range display "0".
Wh and varh zero reset
When , ,and are pressed simultaneously for 2 seconds, the measured values of Wh and varh will
be reset.
When the password protection setting is enabled
, Wh and varh are reset after you enter the password.
Also, you can clear all Wh and varh values by communication function. (In this case, the password is not necessary.)
Note 1: This is effective only in the instantaneous value display.
Note 2: All of Wh and varh will be reset even if these are not shown on the screen.
Note 3: The periodic active energy will not be reset. Another operation is necessary. (Refer to page 56)
PHASE
SET
RESET
Example of change: Case of active energy (imported) = 012,345,678,901,234.567Wh
Unit
：
Mega Unit
：
non Unit
：
non
Unit
：
kilo
Press and simultaneously for 2 seconds
＋
－
Active energy
(Imported)
Active energy
(Exported)
*
Reactive energy
(Imported lag)
Reactive energy
(Imported lead)
*
Reactive energy
(Exported lag)
*
Reactive energy
(Exported lead)
*
Expanded counting setting of menu 3 is
necessary in order to appear the screen of *.
(Refer to page 22)
α
：
1 1-phase 2-wire
2
1-phase
3-wire
3
3-phase
3-wire
3
3-phase
4-wire
The metering status blinks while the active
energy is being counted.
When active energy is not counted, turns OFF.
Active energy
measurement
value
Metering
status
＋
－
√
