FLIR CM72, Руководство пользователя

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FLIR CM72_CM74 USER MANUAL Document Identifier: CM72_CM74 ‐ en ‐ US_AA
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Table 7.2 Current (TRMS)
Function Range Accuracy
DCA (CM74 only)
60.00 A
± (2% + 5 dgt)
600.0 A
ACA
60.00 A ± (2% + 5dgt) 45~65Hz
± (2% + 5dgt) 65~400Hz
for CM74
± (2% + 5dgt) 45~65Hz
± (3% + 5dgt) 65~400Hz
for CM72
600.0 A
ACA VFD
(CM74 only)
60.00 A
± (2% + 5 dgt) 45~65Hz
± (6% + 5 dgt) 65~400Hz
600.0 A
Notes:
CM72: No VFD Mode and ACA Only
CM74: Integrated VFD Mode always ON in ACA MODE
Overload protection: 600A (rms)
Position Error: ±1% of reading for CM74 (CM72 not specified).
AC Conversion Type and additional accuracy is same as AC Voltage.
DCA affected by the temperature and residual magnetism; use DCA Zero function to compensate.
AC conversion type: AC coupled, true RMS responding, calibrated to the RMS value of a sine wave input.
Accuracies are given for sine waves at full scale and non ‐ sine waves below half scale.
If the meter measures a 4000 ‐ count signal and the Crest Factor of the signal is more then 3.0, the reading may
not meet specified tolerances. For non ‐ sine waves (50/60 Hz), add the following Crest Factor corrections:
For non ‐ sine waves (50/60 Hz), add the following crest factor corrections:

For a crest factor of 1.0–2.0, add 3.0% to the accuracy.

For a crest factor of 2.0–2.5, add 5.0% to the accuracy.

For a crest factor of 2.5–3.0, add 7.0% to the accuracy.