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Factors affecting accuracy
Conditions
Ambient temperature
Relative humidity
Frequency response
Positions of the cable in the jaws
Adjacent conductor carrying a
60Hz AC current
3.9 AC Current Probe AmpFlex
When installing probes, face the arrow on the probe in the direction of
the load.
Nominal Range: 3000A
Measurement Range: 10A to 6500A
Currents below 9A will be displayed as zero with this probe.
Probe Output Signal: 140mV
NOTE: Output is proportional to the amplitude and frequency of the measured current.
Sensor: Length = 24" (610mm); Ø = 7.64" (190mm)
Length = 36" (910mm); Ø = 11.46" (290mm)
Safety: EN 61010-1 and 2, Pollution Degree 2, 600V CAT IV, 1000V CAT III
Reference Conditions:
Ambient temperature
Humidity
Position of conductor in the sensor
Continuous magnetic field
External alternative magnetic field
External electric field
Frequency
Type of signal measured
24
(% of the output signal)
14° to 131°F (-10° to 55°C)
10° to 35°C 85%
40Hz to 3kHz
Conductor in contact with
the sensor
®
AC
max
AC
/3000A
AC
AC
Range
–
Probe
(3945-B accuracy included)
at 50Hz
64 to 82°F (18 to 28°C)
20 to 75% of RH
Centered
<40A/m (earth's magnetic field)
None present
None present
10 to 100Hz
Sinusoidal
Power Quality Analyzer Model 3945-B
Error
≤200 ppm/K or
0.2% per 10K
< 0.2%
40Hz to 1kHz: < 0.7%
1 to 3kHz: <2%
< 0.5% to 50/60Hz
≤15mA/A
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