LMG640/670 Precision Power Analyzer
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Precision Power Analyzer LMG670 GRAPH Scope 1 Scope2 Transient Plot 1 Plot 2 Harmonics 1 Harmonics 2 Vector Transient Control Dual Path Single-shot results for narrowband, broadband & harmonics measurements

ZIMMER Precision Power Analyzer LMG670 Scope 1 Scope 2 Transient Plot 1 Plot 2 llarmonicsl Harmonics 2 Vector • Harmonics and interharmonics up to 2000th order, in compliance with EN61000-4-7 • (Optional) speed/torque sensor inputs freely configurable for all signal types (analog, frequency as RS422, TTL or HTL) • Flexible scripting tool for special applications • Convenient calculation of all derived variables in the power analyzer • Simultaneous measurement of I, V and P-variables and harmonics • Presentation in tabular or graphical form • Signal filters freely configurable by frequency,...

Modular with up to seven power channels Narrowband-, wideband RMS values and harmonics in a single measurement, simultaneously and free from aliasing Sampling Rate High sampling rate of up to 1.2 MS/s Generation of RMS values with a minimum cycle time of 30 ms Measurement Channels Accuracy Dynamic Range Bandwidth Extremely high measurement accuracy of 0.015 % of the measured value + 0.01 % of the measuring range limit Full dynamic range continuously available from 500 μA to 32 A and 3 mV to 1000 V Power measurement from standby to full load (max. 32 A) possible without mechanical changes...

Setting the bar in power analysis For more than three decades, ZES ZIMMER What is the situation with common-mode vice designed specifically for power mea- has been focused solely on high-precision rejection? Is the result still reliable for surement can really satisfy these high re- power measurement technology – so we power factors in the range of 0.01? Is the quirements. The LMG600 from ZES ZIMMER know there is more to it than simply mea- earth capacitance low enough to avoid in- stands out in the market for its extreme suring current and voltage. Anyone who terference by leakage...

On conventional power analyzers, a signal first undergoes analog conditioning, followed by optional anti-aliasing filters, to then be fed into an A/D converter. The resulting signal can afterwards be used for the calculation of cycle-based RMS values. Alternatively it can serve as the base for an FFT or further digital filtering. Due to the limitation to a single A/D converter, there are inherently some downsides to be factored in with conventional devices. If measurements are carried out with filters active, in order to avoid aliasing with FFTs, then the wide-band values are lost. With the...

Gapless measurement In the course of stricter monitoring of the the procedure always requires long term efficiency“ at www.zes.com). Some of the consumption and efficiency of electrical analysis of the power consumption, taking measurements required must be performed devices, new standards and procedures into account all relevant operating condi- over several hours, yet without gaps. By are continuously being introduced (e.g. tions. The differences between minimum selecting a sufficiently wide measurement load - e.g. in standby - and full load can range, changing ranges and the inevitably...

Powerful interfaces In addition to the GUI and the connection to ed sync interface, it is possible to precisely the device under test itself, the exchange of synchronize multiple LMG600’s with one data with the existing computer and soft- another. This makes it possible to have a ware environment is of primary importance common time base for measurements in- in determining how well the instrument volving multiple LMG600’s on the same sys- is able to perform its intended task. Only tem, or the mutual connection and control with seamless integration into the overall system can the full power...

Star-to-delta conversion In three-phase three-line systems, only monics. Distortions and imbalances of the although one could use one at any time, grid or consumers are properly taken into provided that the associated disadvantag- the line currents I1, I2, I3 are accessible for account. This makes the use of an exter- es (e.g. increased power losses) are taken measurement. With the star-to-delta con- nal, artificial neutral point superfluous; into account. version option, the line-to-line voltages can be converted to non-accessible phase voltages and the related active power can be...

Click on the <Phase-Ch> softkey: measured values for all channels or linked values in a group Click on softkey <Display>: toggling between RMS values and harmonics Click on the group: configuration of activation, synchronization, filters, etc. Click on the level indicator: configuration of channel-specific measurement ranges and sensor settings Harmonics Phase Angle Ref. Spect. Mode Interharm. lp: Bessel, 8.0 kHz Number Mode HP: RC, 1.0 Hz LP: 150.0 kHz

Clear visualization of measurements thanks to groups In order to properly illustrate the function- as split-phase systems and four-phase such as active, apparent or idle power are al relations between physical measurement or multiphase systems, both simply and calculated across all channels in the group. channels, the power measurement chan- reliably. The only requirement is that all While grouping specifies how the channels nels (P-channels) can be organized into of the channels within a group have the are combined logically, the wiring dictates so-called groups, which appear almost as...

Electrical drive systems More than half of the electrical energy gen- width modulation to control the speed of the the integration of sensor technology (wide- erated worldwide is converted to mechani- motor with hardly any losses. The objective band sensors for high currents, high-voltage cal motion, and the importance of electric is to optimally adjust the converter and mo- dividers, precise speed and torque transmit- powertrains for transport of goods and tor to one another, in order to achieve the ters), the instrument must meet the chal- people is growing steadily. While outdated best...