Product category:
Electrical and Electronic Testing
News Release from: LEM UK | Subject: Topas Power Quality Analyzer
Edited by the Manufacturingtalk Editorial
Team on 12 December 2005
Power quality analyzer offers class-A
accuracy
LEM Instruments, an Austria-based manufacturer of professional test tools for electrical equipment and installations, has enhanced its high-end Topas Power Quality Analyzer.
LEM Instruments, an Austria-based manufacturer of professional test tools for electrical equipment and installations, has enhanced its high-end Topas Power Quality Analyzer The new Topas 2000 offers IEC 61000-4-30 Class-A compliance for accuracy up to 0.1% and synchronization to power frequency and GPS time registration
This article was originally published on Manufacturingtalk on 16 Jan 2004 at 8.00am (UK)
Related stories
Quick Fit Ac Or Dc Current Monitoring Relays
LEM has introduced families of current monitoring relays that combine a current sensor and a relay in a single split-core package, making them suitable for cabinet applications in process automation.
Colour Display And Extra Memory To Power Analyser
LEM has enhanced its Norma 4000 power analyser with a colour display and a memory option, no other analyser offers such high performance and accuracy in such a compact box.
It is the first instrument of its type to do this, and test results can be acknowledged as evidence in contractual applications and legal disputes.
The versatile measurement algorithms and trigger settings allow the expert user to optimize the Topas for each application to capture exactly the data required.
With the GPS (DCF77) option, accuracy of the time registration is better than 1 microseconds.
Further reading
Interface Measures Efficiency In Electrical Drives
The Norma analyser measures the respective electrical power for the calculation of the efficiency under dynamic conditions.
Flash Enhances Performance Of Power Quality Analys
New facilities of the upgrade Analyst Q70 hand-held power quality analyser, can be downloaded to the flash memory of existing units, offering an easier-to-use interface.
Transducers For Measurements Up To 20000ARMS
LEM has introduced the HAZ family of current transducers for measurements from 4000A up to 20000Arms nominal, with six models housed in the same 250 x 160 x 50mm package.
An accurate 'time stamp' is placed on all recorded events, enabling the source of a disturbance to be located by comparing recordings with time stamps taken at different locations.
The Topas 2000 can analyze disturbances and their causes, assess reserves of transformers/feeders, carry out transient analysis, detect interference and power peaks, measure ripple control systems, and record day extreme values and load profiles.
The eight-channel instrument can measure four currents and four voltages, or eight voltages.
Powerful analysis software with a report writer is included.
Developed in cooperation with power utilities providers, the Topas 2000 is optimized for field use in general industrial and power-critical applications such as electric utility distribution networks, hospitals and processing plants.
It enables electrical engineers to conduct detailed analysis of power quality in medium and low-voltage networks, and assess power quality to EN 50160.
The instrument's precision data logger records measurement data for extended periods.
Data can be transferred to a computer directly or through an integrated Ethernet network, even while the instrument continues to record.
The data logger mode measures RMS values, extreme values, flicker severity, voltage dips, voltage swells, voltage interruptions (long and short), voltage unbalance, (inter-)harmonics, THD, signaling voltages, power harmonics and transients.
In online mode, Topas 2000 provides sample values of current and voltage, amplitude spectrum of active power, reactive power and transients, RMS values, active power, power factor and phasor diagrams (voltage, current and apparent power).
The LEM Instruments Topas 2000 and its accessories and power supply are safety rated to Cat III 600 V, and conform to EN 61010-1.
Housed in an electrically insulated case, the rugged construction is built to IP50 for working in harsh environments.
With a 1 GB Compact Flash memory instead of a hard disk, there are no rotating parts inside the instrument, increasing its reliability and durability over a temperature range of 0 C - 50 C (32 degF - 122 degF).
The Topas 2000 will never miss any events with 40 minutes of ride-through operation from the uninterruptible power supply.
The Topas 2000 is available as a basic unit that can be expanded with various options and accessories as required.
• LEM UK: contact details and other news
• Email this article to a colleague
• Register for the free Manufacturingtalk email newsletter
• Manufacturingtalk Home Page
Search the Pro-Talk network of sites
