METREL MI 3399, Инструкция с упражнениями

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Power and Voltage Quality Trainer AD 2
– MI 3399
172
0
0
90
0
180
0
270
0
Ep-
Ep-
Ep+
Ep+
0
0
90
0
180
0
270
0
Eq+
Eq+
Eq- Eq-
Active Energy
Fundamental Reactive Energy
Generated energy (P < 0)
Consumed energy (P > 0)
Figure 4-44: Energy counters and quadrant relationship
In the MEASUREMENTS

ENERGY menu, the instrument has 3 different energy
modes:
1. Total energy TOT mode is used for measuring energy over a complete
recording. When the recorder starts it sums the energy to the existent state of
the counters.
2. Last integration period LAST mode measures energy during recording over the
last completed interval. It is calculated at the end of each interval.
3. Current integration period CUR counter measures energy during recording over
current time interval.
Start of
Recording
Recording Intervals
1 2 3
m m -1
Last interval
Current interval
Current
Time
LAST
CUR
Total Energy
TOT
Figure 4-45: Instrument energy counters
During active recording, consumed energy is constantly accumulated, and we can
observe it under the MEASUREMENT MENU

ENERGY menu. The recorded energy
for each phase and total recorded energy is shown below.