METREL MD 9250 - Page 17

MD 9250 Clamp Meter Series Specifications
17
Electrical Specifications
Accuracy is (% reading digits + number of digits) or otherwise specified, at 23C  5C
& less than 75% relative humidity.
True RMS voltage accuracies are specified from 5 % to 100 % of range or otherwise
specified. Maximum Crest Factor < 1.4 : 1 at full scale & < 2.8 : 1 at half scale, and with
frequency components within the specified frequency bandwidth for non-sinusoidal
waveforms.
DC Voltage
RANGE
Accuracy
6.000V, 60.00V,
600.0V & 1000V
0.5%+5d
Input Impedance: 10M, 50 pF nominal
AutoCheck
TM
_ DCV
RANGE
Accuracy
6.000V, 60.00V,
600.0V & 1000V
1.3% + 5d
AutoCheck
TM
Lo-Z DCV Threshold:
> +1.5VDC & < -1.5VDC nominal
AutoCheck
TM
Lo-Z DCV Input Impedance:
Initially approx. 2.5k, 600pF nominal; Impedance increases abruptly within a fraction
of a second as display voltage is above 50V (typical). Ended up impedances vs display
voltages typically are:
10k @100V
60k @300V
200k @600V
420k @1000V
AC Voltage
RANGE
Accuracy
50Hz ~ 400Hz
6.000V, 60.00V,
600.0V & 1000V
1.2% + 5d
Input Impedance: 10M, 50 pF nominal