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Power Quality Analyzer Model 3945
3.6 AC Current Probe MN93 Probe
(with Model 3945)
Nominal Range:
200A
AC
for f
≤
1kHz
Measurement Range:
2A to 240A
AC
(I > 200A not permanent)
NOTE:
Currents below X will be displayed as zero on the PowerPad™ with this
probe
Probe Output Signal:
5mV
AC
/A
AC
Maximum Clamping Diameter:
0.8” (20mm)
Safety:
EN 61010-2-032, 600V, CAT III, POLL 2
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% no DC current
Magnetic fi eld of external origin
< 40 A/m (earth’s magnetic fi eld)
Accuracy
NOTE:
Add PowerPad™ accuracy ±0.5% ± 1ct
Primary current (A
AC
)
2 to 10A
10 to 100A
100 to 240A
Accuracy
(% of the output signal)
≤
5% ± 5mV
≤
2.5% ± 5mV
≤
1% ± 5mV
Phase shift (°)
≤
15°
≤
3°
≤
2°
Factors affecting accuracy
(% of the output signal)
Conditions
Range
Error
Temperature
14° to 122°F (-10° to 50°C)
≤
150 ppm/K or
0.15% per 10K
Relative humidity
10 to 90%
< 0.2%
Frequency response
40Hz to 10kHz
40Hz to 1kHz: < 3%
1 to 10kHz: < 12%
Positions of the cable in the jaws
–
< 0.5% to 50/60Hz
Adjacent conductor carrying a
60Hz AC current
Conductor in contact with
the sensor
≤
15mA/A
DC current distortion
< 20A
DC
on the
nominal AC current
< 5%
Crest factor distortion
≤
3 and peak current = 200A
≤
3%
Overload:
Frequency derating beyond 1kHz:
I max
≤
1000A x
f
(in kHz)
1
