Chauvin Arnoux F09 - 3.10 Frequency Measurement

37
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■ Characteristics
Display range 1.00
Measuring range (1) 0.20 to 0.50 to
0.49 1.00
Accuracy 5% L 2% L
+ 2 pt + 2 pt
Resolution 0.01
(1) The display of the power factor is limited to 1.00
If one of the terms of the power factor calculation is
outside its power range, the display of the power factor
indicates an indeterminate value”- - - -”.
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■ MIN/ MAX Mode:
- Accuracy: Same for the table below + 1 pt
- Capture time: 100 ms typ. (every 400 ms)
3.10 Frequency Measurement (Hz)
This function is active for measurements V, A, W in AC.
For the power function, the frequency measurement is
performed on the voltage signal.
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.
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■ Characteristics
Display range 40 Hz 400 Hz 4000 Hz 40 kHz
Measuring range (1) 10.00 to 40.0 to 400 to 4.00 kHz to
39.99 Hz 399.9 Hz 3999 Hz 19.99 kHz
Accuracy 0.4% L +1 pt
Resolution 0.01 Hz 0.1 Hz 1 Hz 10 Hz
Triggering threshold (2) 5 V or 10 A
(1) Below 5 Hz, the display shows 0.0
(2) Below the triggering threshold, the display shows an
indeterminate value (- - - -).
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■ 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
1
2
3
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
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■ Special reference condition
- 3-phase and sinusoidal network with 50 Hz or 60 Hz stable
frequency
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■ 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°