Electricity + Control May 2017

23 / 48

DRIVES, MOTORS + SWITCHGEAR
Rudi Swanepoel is Head of Projects at SEW-EURODRIVE.
Enquiries: Jana Klut. Email
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.
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.
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.
• 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-
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
ROUND UP DRIVES, MOTORS + SWITCHGEAR
21 May ‘17 Electricity+Control