Mitsubishi Electric ME96SSRA-MB, Руководство пользователя

Страница: 69 / 109

5. Operation
68
5.1. Basic Operation

Active Energy / Reactive Energy / Apparent Energy Display
■
Disp lay format
The following table shows the display format of active energy / reactive energy / apparent energy based on the total
load.
Total load power[kW] =
α x (VT primary voltage) x (CT primary current)
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.
Total load [kW]
Display type
Digital Display Unit
Less than 10
888888
kWh
(Unit can be changed from
Wh/kWh/MWh.)
10 or higher and less than 100
100 or higher and less than 1000
1000 or higher and less than 10000
MWh
(Unit can be changed from
Wh/kWh/MWh.)
10000 or higher and less than 100000
100000 or higher
* For reactive energy or apparent energy, read Wh as varh or VAh.
■
Example Display
Expanded counting setting of menu 3 is necessary
in order to appear the screen of *1.
(Refer to page 32)
Active energy
(Imported)
Active energy
(Exported) *1
Apparent energy
Reactive energy
(Imported LAG)
Reactive energy
(Imported LEAD) *1
Reactive energy
(Exported LAG) *1
Reactive energy
(Exported LEAD) *1

How to change the unit of Wh, varh and VAh
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, varh and VAh 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, varh and VAh zero reset
When , ,and are pressed simultaneously for 2 seconds, the measured values of Wh, varh and
VAh will be reset.
When the password protection setting is enabled, Wh, varh and VAh are reset after you enter the password.
Also, you can clear all Wh, varh and VAh 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, varh and VAh 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 72)
α
：
1 1-phase 2-wire
2 1-phase 3-wire
3 3-phase 3-wire
3 3-phase 4-wire
PHASE
SET RESET
Example of change: Case of active energy (imported) = 012,345,678,901,234.567Wh
Unit
：
Mega
Unit
：
non
(Lower digit enlarged)
Unit
：
non Unit
：
kilo
Press and simultaneously for 2 seconds ＋ －
√
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
＋ －