FLIR CM174 - Page 34

FLIR CM174 USER MANUAL Document Identifier: CM174-en-US_AC
34
Table 7.2 Current (TRMS)
Function
Range
Accuracy
DCA
60.00 A
±(2% + 5 dgt)
600.0 A
ACA
60.00 A
± (2% + 5dgt) 45 ~ 400Hz
600.0 A
ACA VFD
60.00 A
± (2% + 5 dgt) 45~65Hz
± (6% + 5 dgt) 65~400Hz
600.0 A
Notes:
Overload protection: 600A (rms)
Position Error: ±1% of reading.
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.
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.
Table 7.3 Frequency (ACA and ACV)
Function
Range
Accuracy
Frequency
10.0~600.0 Hz
± (0.1% + 2 dgt)
6.000 kHz
60.00 kHz
Notes:
Overload protection: 1000V (rms) and 600 A (rms)
Trigger Sensitivity:
>5V (rms) for ACV 10 Hz ~ 10 kHz
>15V (rms) for ACV 10 kHz ~ 60 kHz
>4A (rms) for ACA 10 Hz ~ 1 kHz
>8A (rms) for ACA 1 kHz ~ 10 kHz
Reading will be 0.0 for signals below 10.0 Hz