NOVAR 2100/2200 Operating Manual
By listing further right with the
key, you can switch to harmonic components. The symbol
H
appears, indicating harmonic components (of voltage or current). Symbol
%
means that the values are
expressed in percent of fundamental harmonic component. Order of harmonics just displayed flashes
periodically in the display middle line – for example, string
H03
means 3
rd
harmonics.
By repetitive pressing of the
key you can check other harmonics. Although the instrument
evaluates all of the harmonic components up to 40
th
order internally, only odd components to 25
th
order can be viewed of its display (full spectrum od the harmonics is available via communication
interface only).
4.2.7 Electricity Meter
Electricity meter comprises three-phase energy data and maximum tree-phase active power demand
value. The values are situated in particular row.
Depending on the parameter group 78 setup, two electricity meter display modes can be chosen :
•
“4E+MD” mode (default)
•
“8E” mode
4.2.7.1 “4E+MD” Display Mode
In this mode, first four windows contain three-phase energies of four-quadrants :
•
ΣE
P+
… three-phase imported active energy, indicated with
Σ
-
kWh
(or
MWh
or
kMWh
=
GWh)
•
ΣE
P-
… three-phase exported active energy, indicated with
Σ
-
kWh
and preceeding
―
sign
•
ΣE
QL
… three-phase inductive reactive energy, indicated with
Σ
-
kVArh
–
L
•
ΣE
QC
… three-phase capacitive reactive energy, indicated with
Σ
-
kVArh
-
C
Each value occupies all of three display lines, 8 digits before the decimal point and
one after it. For the example at left, ΣE
P+
= 293745.8 kWh.
The values are registered since the last clearing. To clear the energies, display any of them and then
follow the same procedure as for max/min average values. All of the energies are cleared
simultaneously ant start to count from zero again.
In the 5
th
window there is
•
ΣMD
… maximum of three-phase average active power (power demand), indicated with
Σ
-
kW
- ▲and bar over the value
The value contains maximum of three-phase average active power since the last clearing. Averaging
method and averaging period for this value can be set regardless of the method of standard average
values, described above.
Similarly as the energies, the value can be cleared independently.
If the instrument is locked, clearing is not possible.
If the instrument is equipped with a communication interface, the values can be cleared
remotely.
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