LEM ISO plus Manuel D'utilisation page 29

Technical Data
Buzzer activated for external resistance within 100ms
Buzzer level adjustable with LIMIT function from 0,2...50Ω in 0,1 Ω steps for values
< 5 Ω; for values > 5 Ω in 1 Ω steps.
Test lead compensation (ZERO) from 0.01...5Ω.
> 200 mA up to 2 Ω measuring value according EN61557-4
Short circuit current: I
K
for buzzer > 5 Ω: I
Voltage U measurement
DC: Input resistance:1MΩ / 100pF
Measuring
Resolution
range
2V 1mV
20V 10mV
200V 100mV
600V 1V
SMR Serial mode rejection approx. 60dB at 50
and 60Hz for DC (influence of AC signals
to DCV-display)
CMR Common mode rejection approx. 80dB at
50 and 60Hz
Auto range setting time: 1.5s
4
Max. voltage frequency product: 5x10
Over-range up to 1000V with flashing
AC: Specifications valid for AC RMS >5% of range
Measuring range Resolution
2V 1mV
20V 10mV
200V 100mV
600V 1V
Displayed values for voltage measurements: AC, DC and
AC+DC+F. Crest factor 3 for values at the end of the ranges
V : 1200V .
peak P
Over-range up to 800V with flashing
Measuring procedure: The AC RMS and DC part are measured sequentially and
then the TRMS value calculated according to following formula:
> 50 mA.
K
Intrinsic error VDC
±(2% of rdg+10D)
±(2% of rdg+2D)
VHz
symbol.
Intrinsic error VAC
15Hz – 1kHz
±(2% of rdg+20D)
±(2% of rdg+5D)
±(2% of rdg+3D)
±(2% of rdg+2D)
symbol.
2 +
U U
AC DC
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