Atec LMG500 User Manual
Multi Channel Precision Power Meter
LMG500
0,03% Accuracy • 10MHz Bandwidth • 3MSamples/s
Sampling and Evaluation Absolutely Non Gapping
All Inrush Currents and Signal Changes will be Captured
The New Dimension of
Power Measuring
LMG500 e 12.04
LMG500
• For use in all applications
• Measuring inputs for ultimate requirements
• Separated HF current inputs IHF*:
20mA to 3A/DC to 5MHz
• Capacity to earth <20pF
• Measuring with external sensors:
Inputs ISensor and USensor
30mV to 4V/DC to 10MHz
• Current inputs I*, high dynamic
of range: 20mA to 32A/120Apeak
by only one socket pair
No need and incommode change
of external shunts!
• All inputs isolated against each other and against earth (1000V/CAT III)
• Gap free sampling and evaluation with 3MSamples/s at any duration
• Up to 8 power measuring channels in synchronous 3MHz sampling made up with two LMG500
• Voltage inputs U*:
3V to 1000V/3200Vpeak
• Auxiliary voltage ±15V and
Identification of external sensors
General Information
The Precision Power Meter
LMG500, modular for 1 to 8
power channels (phases),
designed with most advanced
technologies will give best
measuring results with all
applications, conventional
devices as motors and transformers, as well as with equipment designed in sophisticated
power electronics as inverters,
lighting and automotive components.
The LMG500 performance is
based on and featured by
• its measuring bandwidth
from DC to above 10 MHz.
Pulsed signals with less than
100ns duration will be
captured and measured
most precisely.
• its high sampling rate of
3 MSamples per second,
synchronous and simul-
taneous at all channels
non-gapping, so all steady
state as well as dynamic
events can be measured and
analysed. For the computa tion of rms and average
values all data of the
continuous 3 MHz-sampling
will be used, thus preventing
any gaps between those
values. This non-gapping
sampling and computing
technology guarantees
highest precision also at
fast signal changes.
• its high common mode rejec tion due to minimisation of
all parasitic infl uences.
• low earth capacities down to
their physical limits (less
than 20pF) yielding a
negligible impact of
measuring device onto the
measuring object.
• very high precision at low
cosphi, e.g. down to 0.001 at
50Hz, is inherent in the
instrument due to bandwidth
and precisely matched delays
of U and I channel. The guar-
anteed accuracy is mainly
determined by the calibration
procedure and used stan-
dards. The usable accuracy
can be amended by more
laborious calibration and
better standards. The trace-
able measuring of trans-
former effi ciency needs an
amended calibration at low
power factor, ZES ZIMMER
Part No. KR-L50-LPF.
ZES ZIMMER’s experience and
skill to design easy to use
ergonomic operation shells give
LMG500 another pole position.
The graphical display gives
real time visualisation of the
measurement with fi gures and
graphs.
The powerful transfer and
evaluation software TERM-L5 for
your PC is another powerful tool
for analysis.
Software PQA enables an easy
and effi cient analysis of power
quality.
Easy operation by use of
colour graphics display and
hotkeys for important
measured values
Various value tables can be
called onto the colour graphics display by pressing one key
only, either with 6 values in
large letters, which can also be
read at a glance from a greater
distance, with 12 values or with
up to 40 values e.g. in range
setting or in harmonics table.
The graphics display allows
scope and plot functions for
waveform and timing diagrams,
as well as xy diagrams or bar
charts for the harmonics. The
status bar at the top of each
display menu shows the input
level of the
4 (8) voltage and the
4 (8) current inputs – an
important item of information for
the quality of the measurement.
The display also indicates in
what groups, A and B (C and D),
the input channels are wired
and which signals the groups
are synchronised to.
Channel 1 with 11 measuring values Range setting and scaling
Scope function for waveform of sampling values Plot function of calculated values
Status line, e.g. with 4 power channels
Precise Power Measurement –
this associates with the
famous Precision Power Meter
series LMG of ZES ZIMMER.
The LMG series is that
successful, approved and
keeps state of the art by
continuous research and
development by the ZES
ZIMMER engineering staff.
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