Electrical Power & Protection


Latest Articles

Voltage detection in MV switchgear
March 2012
Integrated voltage indicator with relay output. The Vois R+ from Kries is an integrated capacitive voltage indicator according to the IEC 61243-5 standard for voltage detecting in medium voltage switchgear. ...

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Omron South Africa completes first solar PV installation
March 2012, Omron Electronics
Omron South Africa has recently completed its first photovoltaic installation using a 10 kW grid-tied 400 V inverter. The solar PV panel is roof mounted on a light weight aluminium structure designed ...

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Avoiding short circuits
March 2012, PI SA (PROFIBUS & PROFINET SA), NewElec Pretoria
In a motor circuit a short circuit condition occurs when the insulation between the phase conductors fails and the load current level exceeds the normal locked rotor current level that the motor would ...

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SPS power supply from Manson
March 2012, MANTECH
The SPS series power supply from Manson is a high power regulated, variable voltage, constant current switch mode power supply with voltage and current indication. The SSP series provides 25, 40 and 60 ...

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Surge arrestors for DC photovoltaic applications
March 2012
The rapidly growing PV industry has placed exceptional demands on the available SPD products intended to protect systems components such as inverters, arrays, or combiner box components from the effects ...

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Sustainable, cost-effective solutions from Eaton
March 2012
Forward-looking building technology saves energy, protects the environment and safeguards investment. At Eaton, green building solutions encompass the interlocking areas of power distribution, power ...

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Sensitive earth protection relay with no tripping
March 2012, NewElec Pretoria
NewElec’s GA earth leakage protection relay enables more sensitive earth leakage protection of high kilowatt motors started direct-on-line, as well as variable speed drive applications, without nuisance ...

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Rack control and monitoring unit
March 2012, Current Automation
Mean Well has launched new peripheral control and monitoring units to collocate with RCP-2000 rack power, RKP-CMU1 and RKP-1Ux-CMU1 for more complete rack power solutions. Up to 32 units of RCP-2000 can ...

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Gigavac sealed contactors
March 2012
Denver Technical Products continues to expand its range of Gigavac GX Series EPIC (Extended Performance Impervious Ceramic) sealed AC and DC contactors capable of switching from 12 to 750 V. These small ...

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Locking male connectors simplify panel feedthroughs
March 2012
Wago has expanded its Mid Multi Connection system (MCS-MIDI) to include locking male connectors with snap-in flanges. Using these male connectors, panel feedthroughs for 5–2,5 mm panel wall thickness ...

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Portable lightning detector by StrikeAlert
March 2012
TufTek has introduced a dependable and easy-to-use portable lightning detector. StrikeAlert is a small and affordable unit that provides early warning of approaching lightning strikes from as far away ...

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Terminal blocks with pushbuttons
March 2012
Wago has launched the new 2060 Series of unique one-, two- and three-pole SMD terminal blocks. Equipped with integrated pushbuttons, the 2060 Series provides easy insertion and removal of all conductor ...

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Dual mount earth leakage relay
March 2012, NewElec Pretoria
The GA range of earth leakage relays from NewElec can now retrofit onto other popular earth leakage protection relay panel cutouts. The 94 mm x 71 mm panel cutout, as well as the standard 134 mm x 71 ...

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LED work lights for industrial use
February 2012, Turck Banner Southern Africa
Banner Engineering has announced a range of energy saving LED work lights of protection categories IP67/IP69K. The robust design allows use in a wide field of application where reliable, bright and even ...

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White paper: Design of a control and spooling mechanism
31 January 2012
Abstract - To use wind energy to its full potential we need to investigate methods on how to harvest energy from high altitude winds more effectively.

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Intelligent power solutions
January 2012
SAP Tronics designs and sells electronic systems for the mining and petrochemical industry with its niche in intelligent power systems designed to support automated lubrication systems. An SAP power ...

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Energy efficiency needs measurement for verification
January 2012, Omniflex Remote Monitoring Specialists
Energy efficiency is key on the corporate agenda, future profitability and sustainability are the stakes. But, determining efficacy and effectiveness is easier said than done at enterprise level due to ...

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LV and MV motor protection
January 2012, NewElec Pretoria
NewElec’s 320 to 327 M series of relays provides protection for LV and MV motors in industrial as well as mining applications, especially where they are working at or close to full RMS loads. The relay ...

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Saving energy and water
January 2012, Omron Electronics
Omron’s solution for right-sizing pump applications. According to Omron, when engineers select a pump for an application most opt for a built-in safety factor. However, this safety factor leads to system ...

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Power and energy meters for early warning
January 2012, RS South Africa
The PM700 series power meters from RS Components give early warning of impending problems that could lead to equipment malfunctions or downtime. They also allow users to diagnose and isolate the cause ...

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