Metrix PX 110 Bedienungsanleitung Seite 28

3.4.1 Specific reference conditions
DC: AC component < 0.1% of the DC signal
AC: - Sinusoidal signals
- PF = 1
- Frequency: 50 Hz
3.4.2 Active power measurements
1. Press the ON/OFF key: the first screen appears
2. Connect the measurement leads to the instrument's current measurement terminals
(on the left), complying with the polarities indicated: red lead on the "+" terminal and
black lead on the "COM" terminal.
Connect the measurement leads to the instrument's voltage measurement terminals
(on the right), complying with the polarities indicated: red lead on the "+" terminal
and black lead on the "COM" terminal.
Set up as indicated in the connection diagrams in Fig.4.4.1 (single phase) or Fig.4.4.2
(balanced three-phase, T3FE only PX 120), depending on the case, making sure if
possible that the maximum acceptable limits are not exceeded (see table below).
Range switching is automatic.
Characteristics
Display range
Measuring range
Accuracy
Accuracy for DC
Resolution
Display stability
Response time
of the display
Note 1 : The measurement of the active power is a signed measurement.
Note 2: In three-phase, the active power is only measured on the fundamental
Wattmeters
L 1
L 2
L 3
Fig 4.4.2 Three-phase/balanced wires (T3FE)
connection diagram (PX 120 only)
Above 6 kW +10%, the display indicates "OL".
components so it is only valid for sinusoidal signals.
I
I
W
U U
1000 W
10.00 W...999.9 W
1% of reading ±2 cts
2% of reading ±3 cts
0.1 W
5 counts in normal mode
2 counts in SMOOTH mode
400 ms in normal mode
3 s in single-phase, in SMOOTH mode
Chapter III
L 1
L 2
L 3
6 kW
1000 W...5999 kW
1% of reading ±2 cts
2% of reading ±3 cts
1 W
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