Electrical Power & Protection


Latest Articles

Direct online starters from Zest
April 2014, WEG Africa
The Zest WEG Group manufactures a full range of SABS-approved direct online starters in fully insulated IP65 enclosures, in both three-phase and single-phase and with various coil voltages. These extremely ...

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Shaw Controls delivers in the E-House market
March 2014, WEG Africa
Part of the Zest WEG Group, Shaw Controls recently dispatched the last two units of an order for seven electrical houses (E-Houses) to be installed for stacker and reclaimer machines at a coal mine in ...

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High-performance power quality recorder
March 2014, Comtest
The Comtest Group has introduced the Fluke 1750 three-phase power recorder for monitoring of power quality and power quality disturbances. These power meters continuously and automatically record every ...

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Using wind energy efficiently
March 2014, Horne Technologies
To achieve change in energy policy, innovative technology for power generation is needed. Unfortunately, many alternative concepts are based on inventions that are more reminiscent of the steam engine ...

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WEG contactors and thermal overload relays
March 2014, WEG Africa
The WEG range of SABS-approved contactors and thermal overload relays offers a reliable solution to low voltage applications in electric panel assembly for OEMs, distributors and end users. The compact ...

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Lightning and surge protection for cellular sites
March 2014
For more than 25 years, Dehn has been successfully developing customised products and protection solutions for cellular sites. This offering includes planning and selection of components for earth-termination ...

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AC current operated switches
March 2014
NK Technologies has introduced low cost current operated switches designated AS1, which consists of a compact case and a solid state relay. Simply pass the primary conductor through the aperture; the ...

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Megger’s earth testers with convenience clamp
March 2014
Clamps with elliptical apertures that can accommodate cables up to 39 mm diameter make Megger’s new DET14C and DET24C earth resistance testers quick and easy to use, even with large conductors where access ...

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Ultra-low profile sign panel power supply
March 2014
Mean Well has launched its 200-400 W ultra low profile economic sign panel power supply range, the NEL-200/300/400 series. The range adopts the 30 mm ultra-low profile design that allows the height and ...

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Importance of voltage measurements in motor ­protection
February 2014, NewElec Pretoria
Unbalanced voltages are unequal voltage values on three-phase circuits that can exist anywhere in a power distribution system. Unbalanced voltages can cause serious problems, particularly to motors and ...

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Omron introduces next-level power supplies
February 2014, Omron Electronics
Omron has introduced its new series of compact power supplies. “The S8VK series is tough, compact and easy to use,” says business manager, Euston Ferreira. “The new ‘family’ includes the cost-effective ...

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Endress+Hauser’s energy solutions
February 2014, Endress+Hauser South Africa
Endress+Hauser’s energy solutions portfolio encompasses single point energy recording, Smart Scale energy solutions and company-wide solutions. In single point energy recording, the energy usage is measured ...

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Power cable fault locator
February 2014
The PFL40A Series cable fault locating system from Megger provides a safe, efficient and easy to use solution for quickly identifying and isolating faults over a wide variety of power distribution cables. ...

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Short circuit intervention
February 2014, NewElec Pretoria, PI SA (PROFIBUS & PROFINET SA)
A short circuit condition occurs when the insulation between the phase conductors fails and the load current level exceeds the normal locked rotor current levels that a motor would draw during start-up. ...

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500 W enclosed low profile power supply
January 2014
Mean Well has introduced its new low profile enclosed type power supply with single output and PFC function – RSP-500 series (500 W). The complete product line now covers the ranges 75, 100, 150, 200, ...

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Digital earth tester
January 2014
The Megger DET3TD digital earth tester is a compact instrument designed to measure earth electrode resistance. It uses the three-terminal method of measurement where the resistance of the current circuit ...

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Protection of mobile radio stations
January 2014
Radio base-station protection using Dehn’s DEHNvap CSP combined surge arresters.

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Alwyn Rautenbach talks on solar power and the Assmang Khumani project
December 2013, Iritron
SA Instrumentation and Control speaks to Iritron’s managing director about photovoltaic solutions and their suitability for industrial projects in southern Africa.

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Low profile 75 W power supply with PFC
December 2013
After the launch of RSP-150 (150 W) series, Mean Well has extended its lower wattage models by the introduction of the RSP-75 series, the 75 W low profile enclosed type switching power supply with PFC ...

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Space-saving terminal blocks
December 2013
DEHN’s DEHNconnect SD2 surge arresters are space-saving terminal blocks with a width of 6 mm. Featuring integrated surge protection, they have a modular disconnection function that allows the user to ...

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