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  • VIEWS & OPINION: more >>

  • LIGHTING: more >>

    • The psychology of colour and how it impacts branding

      by Philip Hammond, BHA Lighting and BHA School of Lighting

      This article explores the perception of colour across cultures and highlights the use of colour in corporate branding. Never underestimate the importance of selecting the right colour to represent a brand. Every colour used in branding has a psychological link or message. It is, however, very important to remember that these psychological links can differ […]

    • How to compare lighting designs for road and street applications

      Information from Signify

      This article focuses on establishing the correct lighting design criteria for road and street lighting projects. Defining and evaluating lighting design specifications can be a challenging task but, as many professionals are coming to realise, comparing lighting design proposals from different companies can be even more challenging. Given all the criteria that professionals must take […]

    • Chromaticity difference specification for light sources

      by Y Ohno and P Blattner, International Commission on Illumination

      Chromaticity difference is specified for colour uniformity, shift in colour during lifetime and individual colour variation of products, and others. The chromaticity difference of light stimuli, in general, is expressed by the distance in the CIE 1976 uniform chromaticity scale (UCS) diagram (CIE, 2004; ISO/CIE, 2009), known as the CIE (u’,v‘) chromaticity diagram or simply […]

  • SWITCHGEAR & DRIVES: more >>

    • A new way of motion control

      by Kevin Wu, and Craig Nelson, Siemens

      This article provides new paradigms in motion control, allowing machine designers and users to reduce motion design time and training costs. To compete in the global market today, machine builders must deliver high-performance machines that are faster, more automated and more flexible, while always meeting customer expectations and keeping design costs under control. New technologies […]

    • Current-limiting MV fuses for indoor distribution networks

      by Mike Rycroft, EE Publishers

      In today’s world of advanced electronically controlled protection devices, the use of fusegear in networks may seem archaic and out of place, but there is still a range of applications for this simple protection device, and fuses are used extensively in variety of applications in medium and high voltage industrial and distribution networks. Advanced  features […]

    • VSD developments substitute rare earth materials

      by Freddy Gyllensten, Peter Isberg, Alessandro Castagnini, Giulio Secondo, Jouni Ikäheimo and Ari Tammi, ABB

      Rare earth-free electric motors with ultra-high efficiencies deliver sustainable and reliable solutions. Highly efficient electric motors in industrial applications often use permanent magnets containing rare earth elements (REEs) such as neodymium and dysprosium. These elements are subject to price variations due to changing market demands. Now, thanks to recent developments in variable-speed drive (VSD) motor […]

  • MECHANICAL TECHNOLOGY: more >>

    • From the ICMEESA Archive: Vacuum degassing of steel

      by FI de Waal and BJ Lodewijks, ISCOR

      From the ICMEESA Archive This article provides the basics steel degassing and discusses the history, principles and benefits of this process. As early as l886, Russel Aitken suggested that various plate defects might be avoided by treating liquid steel under vacuum to remove gases, especially oxygen. It was then already known that the oxygen in […]

    • The travelling wave nuclear reactor

      by Mike Rycroft, EE Publishers

      Interest in small modular nuclear reactors is showing a resurgence. The travelling wave nuclear reactor (TWNR), based on the breed and burn principle, is one of the options being considered. Any optimal energy technology for the future must meet stricter standards than in the past; in addition to being economically attractive, it now must also […]

    • Measurement parameters for burner and boiler systems

      Information from Testo

      This article discusses influencing factors and measurement parameters for burner and boiler systems and their importance for optimising efficiency and emissions. Boiler systems provide the necessary thermal energy for power generation, the heating of buildings, cement and glass manufacture and many other industrial applications. With fuels such as coal, oil or gas, boilers are capable […]

  • INSTALLATION & CONTRACTING: more >>

    • A safety guide to switches

      Information from SAFEhouse

      In the South African electrical industry, it is often said “a switch is a switch is a switch!”. The fact is, nothing could be further from the truth. Switches and sockets are not only functional devices, they are also elements of interior design. They must have the technical requirements essential for modern household, office appliances […]

    • Lightning and surge protection for golf courses

      Information from DEHN

      On golf courses, it is imperative to install lightning and surge protection measures at shelters, club houses, caddy and trolley sheds, the irrigation systems and service stations. Golf courses by their nature extend over large areas and include facilities such as club houses, caddy and trolley sheds (frequently with integrated driving range), locker and change […]

    • Do passive RFID tags need hazardous area certification?

      by Glynn Warren, Extronics

      Radio signals are potential causes of explosions in hazardous areas, which means that radio frequency identification should be carefully considered. Versatile and low cost, passive RFID systems can improve efficiency, reduce downtime and aid productivity. These systems have proven valuable to industrial companies, helping with asset and personnel tracking, inventory management, maintenance planning and more. […]