Electrical Power & Protection


Latest Articles

Compact GA MSO relay
July 2015, NewElec Pretoria
NewElec’s compact GA MS0 earth leakage protection relay is designed for use on underground gully boxes. Following the success of NewElec’s GA relay, the GA MS0 enables more sensitive earth leakage protection ...

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False alarms caused by surges can be prevented
July 2015
The function of emergency alarm systems is to produce an alarm in the event of danger and to remain passive when there is none. The malfunction of these systems, either no alarm sounding if there is danger, ...

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Security on smart grids
June 2015, H3iSquared
Moving to a smart grid solution does create more security concerns that need to be addressed.

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The protocols driving smart grid interoperability
June 2015
Efforts are underway to create a smarter grid by adding intelligence to the electrical infrastructure that connects generation, distribution, transmission, and consumption.

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Dehn Africa launches powerful DC switching device
June 2015
Dehn Africa, has launched DEHNguard SE DC, a modular type 2 surge arrester that is designed so that the protective device is safely disconnected in case of overload, thus preventing DC switching arcs ...

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Phoenix Contact introduces power supply for frequency inverters
June 2015, Phoenix Contact
Phoenix Contact’s new Quint Power power supply is specifically designed for connection to frequency inverters. In the event of mains failures it is used as a compact buffer solution and ensures that the ...

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Periodic inspection of portable earthing and short-circuiting ­devices
June 2015
An important measure when working on electrical installations, according to the five safety rules of DIN VDE 0105 - 100, is the fourth rule: “Carry out earthing and short-circuiting”. This ensures that ...

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Nuclear power and reactor protection systems
1 May 2015
Topics covered were: a potted history of commercial nuclear power; important concepts to commercial nuclear power; ‘passive’ and active safety; reactor protection systems.

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Multi-channel device circuit breaker boards
May 2015, Phoenix Contact
The new multi-channel device circuit breaker boards from Phoenix Contact are available with 4, 8 and 12 channels. The boards are versatile as they can be fitted individually with thermomagnetic or electronic ...

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Protect the fieldbus against voltage spikes
April 2015, Pepperl+Fuchs
Lightning protection modules with self-monitoring functionality.

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Schneider Electric’s off-grid solar and backup power inverter
April 2015, Schneider Electric South Africa
Schneider Electric Solar Business, a global leader in solutions for the solar power conversion chain, has released its off-grid solar and backup power inverter/charger, the Conext SW, in the southern ...

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Schneider Electric’s MP4 services shed light on electrical installations
March 2015, Schneider Electric South Africa
Electrical distribution equipment powers practically every business on the planet. As such, it is the lifeblood of a business and is responsible for maximising production levels by increasing installation ...

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Schneider Electric’s distribution and motor control switchboard
March 2015, Schneider Electric South Africa
Blokset, Schneider Electric’s modular low voltage switchboard for electrical distribution up to 6300 A and for motor control, fully withdrawable up to 250 kW, is now available in the southern African ...

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Current probes up to 2000 Amps
March 2015
The Universal Technic current probe model SC 2000 has the capability of measuring AC/DC current up to 2000 A. Frequency range is from DC to 10 kHz with a accuracy on DC of 1% and AC accuracy at 50 Hz ...

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Power the people
February 2015, Schneider Electric South Africa
The new world of energy: digital, local and consumer focused.

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Preventing false alarms caused by lightning strikes and surges
February 2015
The function of emergency alarm systems, albeit fire or burglar, is to produce an alarm in the event of danger and to remain passive when there is none. The malfunction of these systems, either no alarm ...

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100 Watt DIN rail type security power supply
February 2015
Mean Well’s DRC-40 and DRC-60 series, which are already in the market, have been widely utilised in the security field, receiving outstanding market feedback and positive customer evaluation. In order ...

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10 kW single output ­enclosed type power supply
February 2015
Mean Well’s high power enclosed type AC/DC switching power supplies have been capturing market attention for some time. After the RST-5000 series (single unit with up to 5000 W), the company has now unveiled ...

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Why wait to automate?
February 2015, NewElec Pretoria
Most processes are more efficient when automated and regulated by a PLC and it is the modern way of operating and managing even smaller plants in any industry. However, in a flagging economy filled with ...

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Schneider Electric launches three-step energy management Smart Panel system
February 2015, Schneider Electric South Africa
Schneider Electric has announced the local availability of a Smart Panel system that will assist in fostering sustainable energy savings in small to mid-size buildings, such as public and commercial offices, ...

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