LEM ISO plus, Руководство по эксплуатации

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