LEM HEME ISO 1000 Manuel D'utilisation page 35

Technical Data
F - Frequency Measurement (in A and V)
Measuring
Resolution
range
200Hz 0.1Hz
1kHz 1Hz
Method: Evaluation of zero crossings in signal
Temperature coefficient < 50ppm, sensitivity > 10% of
voltage and current range end value
A – TRMS Current Measurement
Automatic auto zero during power ON and selection of function.
Clamp symbol in LCD activated.
Measuring range Resolution
20 A (min. 0.7A) 10mA
200 A 100mA
2000 A
Specifications valid for AC RMS >5% of range
Displayed values for current measurements: AC, DC and AC+DC+F
SMR Serial mode rejection approx. 60dB at 50
and 60Hz for DC
influence of AC signal to
displayed value in DC function
CMR Common mode rejection approx. 80dB at
50 and 60Hz
influence of AC signals to displayed value
in AC or DC function
Auto range setting time:
2s
Measuring range: 0 - 2000A DC or AC peak
Frequency range:
DC,15Hz to 1kHz at ACRMS
Crest factor: 3
Maximum overload:
10,000A or
ACRMS x frequency < 400,000 AHz
ACRMS is a True RMS measurement.
Continuous logging and output via RS232 interface possible.
Current compensation (ZERO) possible.
Intrinsic error
±(0.2% of rdg +3D)
Intrinsic error
±(1.5% of rdg+0.5A)
±(1.3% of rdg+2D)
1A
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