AEM 3945-B Manual

A SERVICE OF

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18

Power Quality Analyzer Model 3945-B

3.6 AC Current Probe Model SR193

(3945-B accuracy included)

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

the load.

Nominal Range: 1000AAC for f ≤1kHz

Measurement Range: 3A to 1200AACmax(I>1000Anotcontinuously)

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

Probe Output Signal: 1mVAC/AAC

Maximum Clamping Diameter:2"(52mm)

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) 3 to 10A 10 to 100A 100 to 1200A

Accuracy(%oftheoutputsignal)

≤0.8% ± 1ct ≤0.3% ± 1ct ≤0.2% ± 1ct

Phaseshift(°)

≤1° ≤0.5° ≤0.3°

* Logarithmic interpolation between each specied value

Factors affecting accuracy (% of the output signal)

Conditions Range Error

Temperature 14°to122°F(-10°to50°C)

≤200 ppm/°C or 0.2%

per 10°C

Relative humidity 10 to 90%

<0.1%

Frequency

30 to 48Hz

65 to 1000Hz

1 to 5kHz

<0.5%

<1%

<2%

Position of the cable in the jaws

– <0.1% @ ≤ 400Hz

Adjacent conductor carrying a

60Hz AC current

Conductor in contact

with the sensor

≤0.5mA/A

Crest factor distortion

≤6 and current ≤3000A peak <1%

DC current distortion

≤15ADC on the

nominal AC current

<1%

Overload: Frequencyderatingbeyond1kHz:

I max ≤ 1000A x

f (in kHz)

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