Mitsubishi Electric ME96SSHA-MB, Руководство пользователя

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5. Operation
42
5.1.
Basic Operation
⚫
Active Energy Display
■
Disp
lay format
The following table shows the display format of active 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
⚫
How to change the unit of Wh
When and are pressed simultaneously for 2 seconds, the unit of Wh will be changed. This will enable to
check the upper digits or lower digits of counts.
Note1: 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 zero reset
When , ,and are pressed simultaneously for 2 seconds, the measured values of Wh will be reset.
When the password protection setting is enabled
, Wh will be reset after you enter the password.
Also, you can clear Wh values by communication function. (In this case, the password is not necessary.)
(Note 1: This is effective only in the instantaneous value display.)
⚫
Each measurement item display during power transmission
T he following table shows the symbol display (±) for each measurement value according to the power reception /power sending status.
(Refer to page 29 about
“IEC mode” in the Setting Menu 8.)
Quadrant
Measured items
Imported Lag Imported Lead Exported Lag Exported Lead
A,DA,N-A,N-DA,V,Hz,
HI,N-HI,HV
Unsigned
W Unsigned
”
－
”sign
PF
Normal mode
Unsigned
display ※
“
－
”sign
display ※
“
－
”sign
display ※
Unsigned
display ※
IEC mode
Unsigned
display ※
“
－
”sign
display
※
Unsigned
display ※
“
－
”sign
display
※
※ Turns on when displayed on the bar graph.
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
＋ W
＋
W
－
W
＋
var
－
var
Exported lag Imported lead
Exported lead Imported lag