Mitsubishi Electric ME96SSEB-MB, Руководство пользователя

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5. Operation
5.1. Basic Operation
5.1.8. Active Energy/Reactive Energy/Apparent Energy Display
■
Display type
The following table shows the display type of active/reactive/apparent energy based on full-load power.
Full-load power [kW] =
α x (VT primary voltage) x (CT primary current)
1000
*1. For 3-phase 4-wire system, VT primary voltage and direct voltage are
calculated using phase voltage.
*2. For 1-phase 3-wire system, VT primary voltage is calculated using phase
voltage.
*3. For the direct voltage setting, direct voltage is used for calculation instead of
VT primary voltage.
*4. For reactive energy and apparent energy,
‘kW’ in the above equation is read
as
‘kvar’ and ‘kVA’ respectively.
Full-load power [kW]
Display type
Digital
Display
Unit
Below 10
888888
kWh, kvarh, kVAh
*The unit can be
changed to
‘M or none.’
10 or more and below 100
100 or more and below 1000
1000 or more and below 10000
MWh, kvarh, kVAh
*The unit can changed
to
‘k or none.’
10000 or more and below 100000
100000 or more
■
Display examples
To display the screen of *1, you must
change the settings for active/reactive
energy measurement in
3.4 .
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
5.1.9. How to Change the Display Digit of Active/Reactive/Apparent Energy
By changing the unit (M, k, or none) of active/reactive/apparent energy or by displaying the lower enlarged
view, you can check the upper or lower digit of a measured value.
Press and simultaneously for 2 seconds to switch.
Note1: Active, reactive, and apparent energy that are not displayed on the screen will be also all changed to the same unit.
Note2: If the set value of VT primary voltage or that of CT primary current is large, the lower digit less than the
measurement range will indicate
‘0.’
α: 1 1-phase 2-wire
2 1-phase 3-wire
√
3 3-phase 3-wire
3 3-phase 4-wire
＋ －
The measurement display blinks
at measuring active energy
(imported). It becomes OFF or
ON at no measuring point.
Active energy
measured value
Measurement
display
Example of switching active energy (imported): 012,345,678,901,234.567Wh
Unit
：
M
Lower enlarged
Unit: None Unit: k
Press and simultaneously for 2 seconds
＋ －