Reactive Energy Counting Method (2 Quadrant Counting / 4 Quadrant Counting); Each Measurement Item Display During Power Transmission - Mitsubishi Electric ME96SSH-MB User Manual

5.Operation
5.1 Basic Operation


Reactive energy counting method (2 quadrant counting / 4 quadrant counting)

There are the following two types of quadrants for counting reactive energy.
Exported lag
－W
Exported lead
Counting
method
It is counting (Imported lag), (Exported lead),(Imported lead) and (Exported lag) respectively as division of one. In general, it is
4 quadrant
counted by this method. However, at the boundary of each division, there is a dead region. It is suitable for the counting of
counting
equipment with the private electric generator.
(Imported lag) and (Exported lead) are counted as division of one. (Imported lead) and (Exported lag) are counted as division
2 quadrant
of one. The dead region is made only nearby var=0 (power factor = 1). Therefore, because the dead region is not made
counting
nearby power factor = 0. It is suitable for the counting of equipment without the private electric generator and the reactive
power of the capacitor load at the power factor = 0, generally.
The counting method for reactive energy (varh) is switched by "Expanded counting" in the Setting Menu 3.
Also, if setting of "IEC mode" in the Setting Menu 8 is ON, the counting method becomes 2 quadrant counting regardless of "Expanded
counting" in the Setting Menu 3.
If setting of "Expanded counting" is selected for 4 quadrant counting and setting of "IEC mode" is ON, the screens of "exported lag" and
"exported lag" appear, but these are not counting.
(Refer to page 22 about "Expanded counting" in the Setting Menu 3. Refer to page 35 about "IEC mode"


Each measurement item display during power transmission

The following table shows the symbol display (±) for each measurement value according to the power reception /power sending status.
(Refer to page 22 about "Expanded counting" in the Setting Menu 3. Refer to page 35 about "IEC mode" in the Setting Menu 8.)
－var
Exported lag Imported lead
＋W
－W
Exported lead Imported lag
＋var
<4 quadrant counting>
－var
Imported lead
＋W
Imported lag
＋var
Quadrant
Measured items
A,DA,N-A,N-DA,V,Hz,VA
HI,N-HI,HV
W
Normal mode
（For 2 quadrant
counting）
Normal mode
（For 4 quadrant
var
＋W
counting）
IEC mode
（For 2 quadrant
counting）
Normal mode
（For 2 quadrant
counting）
Normal mode
（For 4 quadrant
PF
counting）
IEC mode
（For 2 quadrant
counting）
※Turns on when displayed on the bar graph.
<2 quadrant counting>
－var
Exported lag Imported lead
－W
Exported lead Imported lag
＋var
Description
Imported Lag Imported Lead
Unsigned
Unsigned "－"sign
※
display display
Unsigned "－"sign
display ※ display
Unsigned "－"sign
display ※ display
Unsigned "－"sign
※
display display
Unsigned "－"sign
※
display display
Unsigned "－"sign
※
display display
- 54 -
＋W
in the Setting Menu 8.)
Exported Lag Exported Lead
Unsigned
"－"sign
"－"sign Unsigned
※ ※
display
Unsigned "－"sign
※ display ※
"－"sign Unsigned
※ display ※
"－"sign Unsigned
※ ※
display
Unsigned "－"sign
※ ※
display
Unsigned "－"sign
※ ※
display
※
display
display ※
display ※
※
display
※
display
※
display