FLIR CM83 - Page 40

7 Technical specifications
Input impedance: 3.5 MΩ //, <100 pF.
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. For non-sine waves (50/60 Hz), add the follow-
ing crest factor corrections:
• For a crest factor of 1.4–2.0, add 1.0% to the accuracy.
• For a crest factor of 2.0–2.5, add 2.5% to the accuracy.
• For a crest factor of 2.5–3.0, add 4.0% to the accuracy.
CF:
• 3 @ 460 V, 280 A.
• 2 @ 690 V, 420 A.
AC+DC V
rms
accuracy: Same as ACV specification + DCV specification.
Table 7.2 Current (TRMS)
Function Range Accuracy
DCA
99.99 A ±(2% + 0.5 A)
599.9 A ±(2% + 5 dgt)*
ACA
0.10–99.99 A 50–60 Hz ± (2% + 5
dgt)*
>60–400 Hz ± (2.5% +
5 dgt)*
599.9 A
VFD
ACA
0.10–99.99 A 50–60 Hz ± (2% + 5
dgt)*
599.9 A
* For measured values <1000 dgt, add 5 dgt to the accuracy.
Overload protection: 600 A
rms
.
Position error: ±1% of reading.
AC conversion type and additional accuracy is same as for the AC voltage.
AC+DC A
rms
accuracy: Same as ACA specification + DCA specification. The
DCA is affected by the temperature and the residual magnetism. Use the DCA
zero function to compensate.
#T559825; r. AI/33557/33557; en-US 34