AEM 3945-B Manual

A SERVICE OF

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Power Quality Analyzer Model 3945-B

19

3.7 AC Current Probe MN93 Probe (3945-B accuracy included)

NOTE: When installing probes, face the arrow on the probe in the direction of

the load.

Nominal Range: 200AAC for f ≤ 1kHz

Measurement Range: 2A to 240AACmax(I>200Anotpermanent)

NOTE: Currents <0.5A will be displayed as zero with this probe.

Probe Output Signal: 5mVAC/AAC

Maximum Clamping Diameter:0.8"(20mm)

Safety: 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% no DC current

Magneticeldofexternalorigin <40A/m(earth’smagneticeld)

Accuracy

Primarycurrent(AAC) 2 to 10A 10 to 100A 100 to 240A

Accuracy

(%oftheoutputsignal)

≤3% ± 1ct ≤2.5% ± 1ct ≤1% ± 1ct

Phaseshift(°)

≤6° ≤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%

Position 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

<20ADC 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)

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