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ON / OFF button.
Three (3) current inputs on the top of the instrument to enable the use of
current sensors (MN, SR, AmpFlex
Four (4) voltage inputs.
RS-232 bidirectional optically isolated output for transferring data to a PC (bi-
directional) or printing to a dedicated printer (DPU 414 - SEIKO).
AC Line power input.
Enter button.
Four (4) buttons that enable movement of the cursor, browsing or the selec-
tion of data.
Buttons for directly accessing the 6 display modes at any time:
Transients (set recording or view recorded transient):
• displays waveforms associated with rapid changes in input
Harmonics View:
• display of the harmonics in percent and value ratios for of voltage,
current and power, for each harmonic through the 50
• determination of harmonic current produced by non-linear loads
• analysis of the problems caused by harmonics according to their
order (heating of neutrals, conductors, motors, etc.)
Waveforms View:
• displays voltage and current waveforms or vector representation
(Phasor diagram)
• identification of signal distortion signatures
• display of amplitude and phase unbalance for voltage and current
• checking connections for correct phase order
Power / Energy (view or start energy monitoring):
• display of power levels and the associated parameters
(power factor, displacement and tangent)
• energy monitoring
• four quadrant measurement to discern produced/consumed ac-
tive energies and inductive/capacitive reactive energies
Recording (set recording or view recorded data):
• time-related representation as bar charts or line graphs, of aver-
age power levels or of the average value of any parameter
• Line graphs of each selected parameter (up to 22) vs time
• line voltage stability check
• management of power consumed and generated
• monitoring of harmonic variations
Power Quality Analyzer Model 3945-B
, and MR probes).
®
th
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