Electrical Power & Protection


Latest Articles

Reliable power generation for telecommunications
November 2015
“Telecommunications plays an increasingly vital part in all aspects of commerce – particularly in data processing centres and base transceiver stations (BTS) – and is absolutely dependent on a reliable ...

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Cathodic protection for the 21st century
November 2015, Omniflex Remote Monitoring Specialists
Cathodic protection (CP) is a technique to control the corrosion of metal. CP systems are most commonly used to protect structures such as pipelines, storage tanks, steel piles, offshore oil platforms, ...

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Lightning and surge protection for ­highway gantry signs
November 2015, DEHN Protection South Africa
Highway gantry signs are used to hold traffic-specific detection systems such as CCTV cameras, induction loops and radar detectors. On toll roads, additional detection devices are installed which ensure ...

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Trustworthy phase rotation protection
November 2015, NewElec Pretoria
Phase sequence protection is an important safety issue for motors. Reversing the phase sequence causes the motor to reverse its direction of rotation. This can cause serious damage and injury to personnel ...

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Rogowski current measurement
November 2015
OSI of the USA now offers Rogowski-based high current AC measurement systems. The CTRS family is capable of measuring from 1 to 40 kA utilising a Rogowski head which will fit busbars or bus tubes from ...

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Eliminating impact torque conditions
November 2015, NewElec Pretoria
The OLR 84 S protection relay from NewElec, when mounted on a motor circuit, eliminates impact torque conditions which can result in broken chains, damaged screw conveyors, broken couplings and even damaged ...

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New generation battery simulator and power supply
November 2015, Comtest
Tektronix has launched the Keithley 2281S battery simulator and precision DC power supply. Unlike existing sources and power supplies that can only simulate a battery under one specific condition, the ...

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ABB’s low voltage switchgear ­ensures smooth operation
October 2015, ABB South Africa
Sasol Synfuels plants in Secunda benefit from sustained service levels and superior technology.

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Electrical machines with hazardous area certification
October 2015, Rockwell Automation
Rockwell Automation and local electro-mechanical equipment solutions provider Actom Electrical Machines have been awarded a hazardous area certification for the oil and gas industry by Explolabs. The ...

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Surge protection for petrol stations is critical
October 2015, DEHN Protection South Africa
Petrol stations are highly vulnerable to lightning strikes and surges due to their extremely sensitive control and display systems. The necessity of a lightning protection system is essential when considering ...

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Inverter for single phase pump control
October 2015
Italtecnica’s Sirio 2.0 is a new electronic device for single phase electric pump control based on inverter technology. It is ideally suited for use with variable speed drives to provide constant pressure ...

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Durable, powerful lightning current arrester
October 2015, Phoenix Contact
The durable and powerful Flashtrab SEC-PLUS type 1 lightning current arresters from Phoenix Contact have been complemented by two product variants. The Flashtrab SEC-PLUS 440 variant is particularly suited ...

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RWE selects solar storage system from Parker’s EGT division
October 2015, Parker Hannifin - Sales Company South Africa
Parker’s EGT (energy grid tie) division has secured an order from German utilities company RWE to help accommodate the rising amount of photovoltaic (PV) solar energy generated on its network. The solution, ...

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Pump motor protection
October 2015, NewElec Pretoria
A range of electronic motor protection and control relays designed to protect pumps and motors from a variety of faults is available from NewElec. The K series is aimed at pump users and consultants who ...

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Schneider Electric’s Premset architecture now available up to 17,5 kV
September 2015, Schneider Electric South Africa
Schneider Electric has introduced its new Premset architecture, now up to 17,5 kV, to southern African utilities looking to improve availability and safety, while still remaining flexible and modular. ...

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Increased safety from protection relays
September 2015, NewElec Pretoria
NewElec’s NH Series relays are designed to protect motors in various LV applications from 5 to 550A. If required, percentage calibration is available and the modular design permits door, chassis or CT ...

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Yokogawa’s integrated control ­system for power stations
August 2015, Yokogawa South Africa
Convergence of control system platforms is a big productivity enhancement tool for plant O&M management today.

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Zest WEG Group provides the optimum generator set
August 2015, WEG Africa
The current power constraints facing South Africa have resulted in companies being requested to cut their power consumption by at least 10% in order to alleviate the pressure on the overburdened transmission ...

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Mitsubishi Electric’s low voltage switchgear
August 2015, Adroit Technologies
The complete solution for line and load side.

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Solar installation reduces utility bill
August 2015, ABB South Africa
ABB string inverters make cost savings possible for a commercial property owner in Port Elizabeth.

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