KMB NOVAR 2600, Руководство по эксплуатации

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NOVAR 2600 Operating Manual
For outright specification of the quadrant, the power factor of the fundamental harmonic component –
cos φ – is expressed according to the graph with two attributes :
•
a sign ( + or - ), which indicates polarity of active power
•
a character ( L or C ), which indicates the power factor character ( the polarity of reactive
power relative to the active power )
You can find the control deviation power ΔQfh and the compensation reserve powers RC and
RL evaluation formulas in the PFC-block description.
Voltage and current unbalance evaluation is based on negative/positive sequences of voltage and
current fundamental harmonic components :
Voltage unbalance :
unb
U
=
voltage negative sequence
voltage positive sequence
∗
100 %
Current unbalance :
unb
I
=
current negative sequence
current positive sequence
∗ 100 %
Current negative sequence angle : φnsI
All of angle values are expressed in degrees in range [ -180.0 ÷ +179.9 ].
5.3.2.1 Temperature
Both the internal temperature Ti and the external temperature Te (at selected models only) are
measured and updated each approx. 10 seconds.
5.3.3 Measured Values Evaluation and Aggregation
As described above, measured values are evaluated according to IEC 61000-4-30 ed.2, based on
continuous (gap-less), 10 / 12 mains cycles long intervals ( measurement cycle ) processing.
Further aggregation of the actual values from this evaluation is used to obtain values for displaying
and recording.
5.3.3.1 Actual Values Evaluation and Aggregation
Actual ( instantaneous ) values of measured quantities, that can be viewed on instrument's display,
are evaluated as average of integral number of measurement cycle values per
display refresh cycl
e.
The display refresh cycle is presetable in range 2 ÷ 20 measurement cycles , corresponding approx.
to 0.4 ÷ 4 seconds display refresh cycle duration.
Maximum (marked as
↑ ) and minimum ( ↓ ) measurement cycle values registered during the display
refresh cycle interval are displayed too.
Exceptions :
• frequency – the value is refreshed each frequency measurement cycle (see above)
71
maximum measurement cycle
value during refresh cycle
minimum measurement cycle
value during refresh cycle
display refresh cycle
average value
Fig. 5.8: Actual Data Display
Refresh Cycle Setting
Fig. 5.9: Actual Data