Power Quality Analyzer Model 3945-B
23
3.8 AC Current Probe MN193 Probe
(3945-B accuracy included)
When installing probes, face the arrow on the probe in the direction of
the load.
The 5A range of the MN193 is designed to work with secondary current transform-
ers. Best accuracy is available when entering the transformer ratio (e.g. 1000/5A).
When used to measure 5A direct, the resolution will be limited to 0.1A max.
Nominal Range:
5A and 100A
AC
Measurement Range:
5A: 0.005A to 6A
AC
max (1A to 1200A with ratio 1000/5 selected)
100A: 0.1A to 120A
AC
max
Currents < (Primary x 5) ÷ (Secondary x 1000) or < 250mA on the 5A range
and <0.2A on the 100A range will be displayed as zero with this probe. Power
calculations will also be zeroed when the current is zeroed.
Probe Output Signal:
5A: 200mV/A
AC;
100A: 10mV/A
AC
Maximum Clamping Diameter:
0.8" (20mm)
Safety:
NF EN 61010-2-032, Pollution Degree 2,
300V CAT IV, 600V CAT III
Reference Conditions:
Ambient temperature
73°F (23°C) ± 5°F (3°C)
Humidity
20 to 75% of RH
Frequency
48 to 65Hz
Distortion factor
<1% without superimposed DC current
Magnetic field of external origin
<40 A/m (earth’s magnetic field)
Accuracy Specifications:
Range:
10mV/A (1V @ 100Arms)
Primary current (in A
AC
)
0.1A to 1A
1A to 120A
Accuracy (% of the output signal)
≤
1% ± 2cts
≤
1% ± 1ct
Phase shift (°)
≤
1.5°
≤
1°
Overload:
120A continuous
Range:
200mV/A (1V @ 5Arms) with ratio 1000/5 selected
Primary current (in A
AC
)
Probe output
1 to 10A
5 to 50mA
10 to 100A
0.05 to 0.5A
100 to 1200A
0.5 to 6A
Accuracy (% of the output signal)
≤
1.5% ± 1ct
≤
1.5% ± 1ct
≤
1% ± 1ct
Phase shift (°)
≤
1.7°
≤
1°
≤
1°
Overload:
12A continuous