AEM 3945-B Manual

A SERVICE OF

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12

Power Quality Analyzer Model 3945-B



 Measurementselection:

RMS True RMS Measurement

THD Total Harmonic Distortion

CF Crest Factor

max/min

 MaximumandMinimumvalues

Simultaneous display of the various measurements

in alphanumeric form

Phasor diagram

NOTE: The calculation of the DPF, Tan, KF, Φ, UNB, Min, Max, VAR, Harmonics,

PST, and DF parameters and the frequency measurement can only be performed

if voltage with a frequency of 41 to 70 Hz is applied to the Ch1 voltage input.



 Selectionofwaveformstobedisplayed(usethe buttonstoselect):

• 3U displays the 3 phase-to-phase voltages U1-2, U2-3, U3-1

• 3V displays the 3 phase-to-neutral voltages V1N, V2N, V3N

• 3A displays the 3 phase currents

• 4A displays the 3 phase currents and the neutral current

• L1, L2 or L3 displays the voltage and current, on phase 1, 2 or 3, when

selected

Protocol:

 U:Signiesphase-to-phasevoltage

 V:Signiesphase-to-neutralvoltage

 L1,L2,L3:Refertothephases(A,B,Corother)