Analyser tracks down three-phase supply problems
A
LEM Instruments product story
Edited by the Engineeringtalk editorial team
Jul 17, 2003
The Analyst 3Q handheld three-phase analyser helps identify and quantify power quality problems that affect the performance, safety and efficiency of electrical plant and equipment.
LEM has enhanced the capabilities of its Analyst 3Q handheld three-phase analyser to simplify even further the identification and quantification of the power quality problems that affect the performance, safety and efficiency of electrical plant and equipment.
New features offered by the Analyst 3Q include a logging capability that allows a complete set of parameters to be recorded for ten days at ten-minute intervals - an invaluable aid to identifying trends and intermittent faults.
Other new advanced features include: energy measurement in kilowatt-hours and kilovolt-ampere-hours; a fourth current channel for simultaneous measurement of neutral currents; current measurement from 0.5 to 3000A; recording of current and voltage harmonics for troubleshooting; and a clear graphical display of voltage and current unbalance.
Customers can update their existing Analyst 3Q units by downloading an upgrade from the LEM website.
The optional fix wired LEM-flex current probes, with a measurement range from 1 to 1000A, are automatically recognised by the Analyst 3Q, - with the relevant measurement range is being set.
Another recent feature is voltage measurement ranges from 57 to 480V, supporting all common nominal voltages.
The Analyst 3Q combines the functions of a power meter, oscilloscope and data-logger into a single instrument.
It offers clear representation of phase angle as well as waveforms, level/time diagrams, and vector diagrams for unbalance and harmonics analysis.
Immediate statistical analysis is offered, to measure compliance with EN50160.
In the PQ (power quality) function, the Analyst 3Q displays all relevant energy distribution parameters.
The unit's WinA3Q software enables the analysis of the saved screen and can export the data in the internationally recognised PQDIF format.
A detailed evaluation/analysis can then be carried out with the TOP2000 PQDIF browser (included free) in German, English or French.
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