Fluke CNX v3000 Manual - Page 50

Input Characteristics, Typical Short Circuit Current

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CNX 3000 Users Manual Input Characteristics Function Overload Protection Input Impedance (nominal) Common Mode Rejection Ratio (1 kΩ unbalance) Normal Mode Rejection  1100 V rms >10 MΩ 120 dB at dc, 50 Hz or 60 Hz > 60 dB at 50 Hz or 60 Hz  1100 V rms >10 MΩ < 100 pF > 60 dB, dc to 60 Hz  1100 V rms >10 MΩ 120 dB at dc, 50 Hz or 60 Hz > 60 dB at 50 Hz or 60 Hz 1100 V rms 1100 V rms Open Circuit Test Voltage

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CNX 3000
Users Manual
42
Input Characteristics
Function
Overload
Protection
Input Impedance
(nominal)
Common Mode
Rejection Ratio
(1 k
Ω
unbalance)
Normal Mode Rejection
1100 V rms
>10 M
Ω
<100 pF
> 120 dB at dc, 50 Hz or 60 Hz
> 60 dB at 50 Hz or 60 Hz
1100 V rms
>10 M
Ω
< 100 pF
> 60 dB, dc to 60 Hz
1100 V rms
>10 M
Ω
<100 pF
> 120 dB at dc, 50 Hz or 60 Hz
> 60 dB at 50 Hz or 60 Hz
Open Circuit Test
Voltage
Full Scale Voltage
Typical Short Circuit Current
To 6 M
Ω
50 M
Ω
Ω
/
1100 V rms
<2.7 V dc
<0.7 V dc
<0.9 V dc
<350
μ
A
/
1100 V rms
<2.7 V dc
2.000 V dc
<1.1 mA
Function
Overload Protection
Overload
mA
Fused, 44/100 A, 1000 V FAST Fuse
600 mA overload for 2 minutes maximum, 10 minutes rest minimum
MIN MAX Recording
Function
Accuracy
DC Functions
The specified accuracy of the measurement function
±
12 counts for changes >350 ms in duration.
AC Functions
The specified accuracy of the measurement function
±
40 counts for changes >900 ms in duration.
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