Mitsubishi Electric ME96NSR, Руководство пользователя

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Measured value display and enlarged 3 digital figures display of active energy and reactive energy can be displayed.
●
Active energy and reactive energy display
Active energy and reactive energy are displayed on the lower stage.
●
Enlarged 3 digital figures
When + and – are pressed simultaneously for 2 seconds, values of active energy and reactive energy are
enlarged by 3 figures.
6. Operation
6.8 Expanded Counting Display
●
Wh and varh zero reset
When
SET
,
RESET
and
PHASE
are pressed simultaneously for 2 seconds, the measured values of active
energy (Wh) and reactive energy (varh) are reset. (This is effective only in the instantaneous value display.)
Note 1: All of active energy (Wh) and reactive energy (varh) not displayed are reset too.
Pressing
simultaneously
for 2 seconds
+ –
,
Note 1: This function is made only on active energy and reactive energy displayed.
●
Example for display
Exported active energy Exported lag reactive energy Imported lead reactive energy Exported lead reactive energy
●
2 quadrants/4 quadrants counting (Reactive energy)
In the reactive energy counting, the taking quadrant is 2 methods as follows.
<4 quadrants counting>
It is counting (Imported lag), (Exported lead),
(Imported lead) and (Exported lag) respectively
as division of one.
In general, it is counted by this method. How-
ever, at the boundary of each division, there is a
dead region. It is suitable for the counting of
equipment with the private electric generator.
+var
-var
-W +W
Exported
lag
Exported
lead
Imported
lead
Imported
lag
Exported
lag
Exported
lead
Imported
lead
Imported
lag
<2 quadrants counting>
(Imported lag) and (Exported lead) are counted as divi-
sion of one. (Imported lead) and (Exported lag) are
counted as division of one.
The dead region is made only nearby var=0 (power factor
= 1).
Therefore, because the dead region is not made nearby
power factor = 0. It is suitable for the counting of equip-
ment without the private electric generator and the reac-
tive power of the capacitor load at the power factor = 0,
generally.
+var
-var
-W +W
Exported
lag
Exported
lead
Imported
lead
Imported
lag
Exported
lag
Exported
lead
Imported
lead
Imported
lag
In the set of the expanded counting of the set-up menu 4.1,
• 2 quadrants counting is selected in the combination
!
and
@
.
• 4 quadrants counting is selected in the combination
#
and
$
.
Display type is as shown in the right table according to total load power.
In the case of reactive power amount, kW in the above table is exchanged into kvar, and kWh into kvarh.
Total load (kW)
1 to 10
10 to 100
100 to 1000
1000 to 10000
10000 to 100000
100000 or higher
Digital display
8888.88
88888.8
888888
8888.88
88888.8
888888
Unit (k/M)
k
M
Total load [kW] =
1000
α ×
(Primary voltage value)
×
(Primary current value)
α =
3 Three-phase 4-wire type
(Primary voltage value: phase to neutral)
α =
3 Three-phase 3-wire type
(Primary voltage value: phase to phase)