10
Accuracy
Accuracy is specified as follows: ± (a percentage of the r a fixed amount)
at 23 °C ± 5 °C (73.4 °F ± 9 °F), 0% - 75% relative humidity.
Refer to the “Specifications” section for operating conditions.
Value
Range
Accuracy
Frequency
Range
Input
Impedance
AC Voltage
0 to 600 V
± (1.2% + 3 V)
40 to 500 Hz
2 MΩ
2 nF
AC Current
(200 A range)
0 to 199.9 A
± (1.9% + 0.5 A)
50/60 Hz
N/A
AC Current
(600 A range)
0 to 400 A
± (1.5% + 5 A)
50/60 Hz
N/A
400 to 600 A
± (2.5% + 5 A)
50/60 Hz
Resistance*
0 to 2000 Ω
± (1.5% + 2 Ω)
N/A
N/A
* Maximum open circuit voltage: 1 V
Continuity
Threshold: Tone sounds if the measured resistance is less than approximately 50 Ω,
and turns off when greater than approximately 300 Ω.
For the CM-600, AC accuracy is specified for sine waves only.
For the CM-650, accuracy specification applies for waveforms with crest factors less than 2.
For crest factors from 2 to 3, add 1.4% to accuracy.
•
For crest factors from 3 to 4, add 3% to accuracy.
•
