Atec AEMC-3945 User Manual
Three-phase power quality analyzer powerpad, Model 3945
Three-Phase Power Quality Analyzer PowerPad
™
Model 3945 (pdf)
Rev. 04
05/05
Technical Assistance (800) 343-1391
1 of 13
Three-Phase Power Quality Analyzer
PowerPad
™
Model 3945
Wouldn’t it be nice if you could
look inside your electrical system
and see what’s going on?
Troubleshooting would be so
much easier if you could see the
volts, amps and harmonic content
in real time and take pictures to
document and analyze. Now you
can do just that and more with
AEMC’s PowerPad. The full color
graphical display lets you see and
analyze each signal clearly. Its
high speed sample rate, at 256
samples per cycle, provides
excellent fidelity in reproducing
waveforms and capturing
transients that happen as fast as
62.5µs.
PowerPad’s 4MB of memory is
conveniently partitioned to let you
store four different types of data,
synchronized or independent of
each other. You can store up to
12 screen snapshots, up to
50 captured transients that contain
four cycles for each active input,
and 4096 alarm events. You can
also record trend data for days,
weeks or even months.
Six direct access function buttons
quickly let you see:
Waveforms
– Display Volts,
Amps, THD and Crest Factor by
phase or for all phases. You can
display all the voltage inputs on
one screen, phase-to-phase or
phase-to-neutral. Real-time phasor
diagrams can be displayed for
volts and amps, also by phase or
for all phases.
Harmonics
– Display Harmonics
out to the 50
th
for Volts, Amps and
VA. Individual Harmonics are
displayed as a percentage and in
real value. Harmonic direction and
sequencing can also be displayed.
Transients
– Set, capture and
display transients. You select the
threshold and the number of
transients to capture. PowerPad
then captures four waveforms for
each transient; the triggering
waveform as well as one pre- and
two post-triggered waveforms. As
many as 1200 waveforms can be
captured.