Electrical Specifications - Megger DCM1500 Guia Del Usuario

1-3 Electrical Specifications

Accuracy is ±(% reading + number of digits) at 23°C ± 5°C, less than 80%
R.H.
Temperature coefficient:
Operating temperature:
AC Volts: Auto-ranging
Range
400.0 V
750 V
* add 2 digits to accuracy when reading less 15% of full scale.
Input Impedance: ≥1MΩ// less than 100pF.
AC Conversion Type:
AC Conversions are ac-coupled, true rms responding, calibrated to the rms
value of a sine wave input. Accuracies are given for sine wave at full scale
and non-sine wave below half scale. For non-sine wave add the following
Crest Factor corrections:
For Crest Factor of 1.4 to 2.0, add 1.0% to accuracy.
For Crest Factor of 2.0 to 2.5, add 2.5% to accuracy.
For Crest Factor of 2.5 to 3.0, add 4.0% to accuracy.
Max.CF
DC Volts: Auto-ranging
Range
400.0 V
1000 V
Input Impedance: ≥1MΩ
10
0.2 × (Specified accuracy) /°C, <18°C, >28°C
0°C ~ 30°C (≤ 80% RH)
30°C ~ 40°C (≤ 75% RH)
40°C ~ 50°C (≤ 45% RH)
Resolution
100 mV
1 V
2 @ 600V
1.5 @ 750V
Resolution
100 mV
1 V
Accuracy
±(1.0% reading + 5 digits)
50Hz ~ 500Hz *
Accuracy
± (0.7% reading + 2 digits)
Over voltage
protection
750 V rms
Over voltage
protection
1000 V rms