Electricity + Control April 2018

round up

ELECTRICAL PROTECTION + SAFETY

Power Quality and motor analyser

detected event, in all modes, without set-up • Automatic transient mode captures waveform data at 200 kS/s on all phas- es simultaneously up to 6 kV Enquiries:Tel. +27 (0) 10 595 1821 or email sales@comtest.co.za

• Perform dynamic motor analysis by plotting of motor de-rating factor against load according to NEMA guide- lines • Calculate mechanical power and effi- ciency without the need of mechanical sensors, just connect to the input con- ductors and you’re ready to go • Measure electrical power parameters such as voltage, current, power, appar- ent power, power factor, harmonic dis- tortion 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 averages and waveforms to character- ise electrical system dynamics (gener- ator start-ups, UPS switching etc.) • Waveform capture function captures 100/120 cycles (50/60 Hz) of each event

Comtest is offering the Fluke 438-II Pow- er 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 elec- trical and mechanical performance pa- rameters such as power, harmonics, unbalance, motor speed, torque and me- chanical power without the need of me- chanical 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, me- chanical power and motor efficiency

Electricity + Control

APRIL 2018

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