Electricity + Control May 2017

DRIVES, MOTORS + SWITCHGEAR

Kazakhstan represents an important miningmarket for this company as it tackles projects outside its borders. Business Monitor reports that Kazakh- stan’s mining industry could soar to $29,5 billion this year. This growth is being spearheaded by the coal, gold and copper sectors, which together account for the bulk of the value of the Central Asian nation's mining industry.

cases separate bearings are no longer required in the agitator, while oversizing can also be avoided. An optional drywell seal prevents leakage at the output shaft, and therefore a standard mounting flange can be used.

Conclusion When it comes to large-scale equipment such as at Kazakhstan, it is imperative that customer-specific applications and tailor-made solutions can be provided. The key to a real competitive advantage lies in creating innovative, safe and energy-efficient concepts, from the comprehensive modular system and its drive components to solutions-orientated, and cost- and function-optimised packages with a high degree of adaptability to specific applications.

Rudi Swanepoel is Head of Projects at SEW-EURODRIVE. Enquiries: Jana Klut. Email JKlut@sew.co.za www.facebook.com/SEWEurodriveSA

ROUND UP

DRIVES, MOTORS + SWITCHGEAR

Power quality and motor analyser

Fluke, represented in southernAfrica by the Comtest Group , has on offer the Fluke 438-II Power Quality and Motor Analyser, adding key mechanical measurement capabilities for electric motors to the advanced power quality analysis functions of the Fluke 430 Series II Power Quality Analysers. They measure and analyse key electrical and me- chanical performance parameters such as power, harmonics, unbalance, motor speed, torque and mechanical power without the need of mechanical sensors. The 438-II is the ideal portable motor analysis test tool, locating, predicting, pre- venting, and troubleshooting power quality problems in three-phase and single-phase power distribution systems, while giving technicians the mechanical and electrical information needed to effectively evaluate motor performance.

erages and waveforms to characterise electrical system dynamics (generator start-ups, UPS switching etc.) • Waveform capture function captures 100/120 cycles (50/60 Hz) of each event detected event, in all modes, without set-up • Automatic transient mode captures waveform data at 200 kS/s on all phases simultaneously up to 6 kV Enquiries: Comtest.Tel. +27 (0) 10 595 1821 or email sales@comtest.co.za

• Measure key parameters on direct-on- line motors including torque, RPM, mechanical power and motor efficiency • Perform dynamic motor analysis by plotting of motor de-rating factor against load according to NEMA guidelines • Calculate mechanical power and ef- ficiency without the need of mechani- cal sensors, just connect to the input conductors and you’re ready to go • Measure electrical power parameters such as voltage, current, power, ap- parent power, power factor, harmonic distortion and unbalance to identify char- acteristics that impact motor efficiency • Identify power quality issues such as dips, swells, transients, harmonics and unbalance • PowerWave data technology captures fast RMS data, and shows half-cycle av-

May ‘17 Electricity+Control

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