Phase Order Indication - Gossen MetraWatt Metraclip 72 Manual De Instrucciones

1. Perform a short pressing on the Hz key, the display shows
the frequency of the measured signal.
2. Pressing again returns to the previously displayed
measurement.
Characteristics
Display range
Measuring range (1)
Accuracy
Resolution
Triggering threshold (2)
(1) Below 5 Hz, the display shows 0.0
(2) Below the triggering threshold, the display shows an
indeterminate value (- - - -).
MIN/MAX
- Accuracy: same as in the table above +0.2% of reading
with limitation to 5 kHz.
- Capture time: 125 ms typ. every 400 ms

3.11 Phase order indication

This measurement is performed with 2 cables only,
sequentially as follows:
1. Integration of a "reference" period on one phase L1-L2 for
example
2. Integration of a "reference" period on one phase L1-L3
3. Calculation of the time delay between "reference" and
"measurement" periods enabling determination of the
phase order or phase rotation direction
Special reference condition
- 3-phase and sinusoidal network with 50 Hz or 60 Hz stable
frequency
Characteristics
- Frequency range: 47 Hz to 53 Hz or 57 Hz to 63 Hz.
- Acceptable voltage range: 50 V to 600 V
- Acceptable phase imbalance rate: ±10°
- Acceptable amplitude imbalance rate: 20%
- Acceptable voltage harmonic distortion: 10%
Running of phase rotation direction detection sequence
Note 1:
In the following table, display of the symbol "
systematically to the beginning of sequence
Note 2:
The sequence of the following table is described using:
- L1 on terminal "COM"
- L2 then L3 on terminal "+"
The same result is obtained if:
- L2 on terminal "COM" , L3 then L1 on terminal "+"
or:
- L3 on terminal "COM" , L1 then L2 on terminal "+"
40 Hz 400 Hz 4000 Hz
10.00 to 40.0 to
39.99 Hz 399.9 Hz 3999 Hz 19.99 kHz
0.4% L +1 pt
0.01 Hz 0.1 Hz
5 V or 10 A
36
40 kHz
400 to 4.00 kHz to
1 Hz 10 Hz
" refers