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  • VIEWS & OPINION: more >>

  • LIGHTING: more >>

    • Commissioning street lighting in compliance with EN13201

      by Prof. S Matei, Eletromagnetica SA

      Luminance measurements of road and street lighting enable analysis of the luminous environment from the driver’s point of view. Quality road lighting is important to ensure traffic safety on public roads. Good lighting on traffic routes can reduce night-time accidents by 30%. The road surface must therefore be illuminated so that objects on the surface […]

    • Power over Ethernet for LED lighting: Benefits beyond efficiency

      by Phil Hammond, BHA School of Lighting

      How DC power can be provided to LEDs by using modern power over Ethernet (PoE) technology. Although the energy efficiency of solid-state lighting is well documented, the most efficient way to power this lighting has been the subject of debate. Alec Makdessian and Thong Hunyh of integrated circuit company Maxim Integrated describe how power over […]

    • Measuring distance with light

      by Slawomir Piatek, Hamamatsu Corporation

      This article details the measurement of distance using light, with a focus on structured light. Assessing the distance, size, or shape of objects is of great practical importance in myriad applications. While some distance measuring methods can be found in nature, others have been generated by humans for improved accuracy. Stereoscopic vision is the main […]

  • SWITCHGEAR & DRIVES: more >>

    • Single-phase earth faults: the role of the recloser

      Information from Noja Power Switchgear

      Examples of were reclosers provide integrated solutions to improving the continuity of supply after the occurrence of a phase-to-earth fault. The advent of the microprocessor protection relay within recloser controllers has allowed the introduction of a significant number of new protection features and functionalities. In parallel with these enhancements, the recloser has transformed into an […]

    • How to ensure a secure, long-lasting power connection

      by Emir Boumediene and Daniel Vanzetto, Schneider Electric

      The importance of reliable power connections in protecting electrical installations from the risk of electrical fires. Power connection safety and reliability is not just advisable, it’s essential. Reliable connections are critical in terms of protecting installations against electrical fires, which can inadvertently start as a result of poor or loose connections. A number of factors […]

    • Who is responsible for proving compliance to IEC 61439?

      by Marc Moreau, Sabelco Electrical Industries

      It is the assembly manufacturer’s responsibility to prove compliance and to take full responsibility for the completed assembly. Users or specifiers of low voltage assemblies in the market today must understand that it is the manufacturer’s responsibility to prove compliance for their product. However, the user or specifier requires a basic understanding of the standard, […]

  • MECHANICAL TECHNOLOGY: more >>

    • The Milner Park aerial ropeway

      by CNL Fuller and EJ Wainwright, 1966

      From the ICMMESA Archive A detailed discussion of the passenger carrying mono-cable ropeway at Milner Park Showgrounds, Johannesburg, built in 1964. Bronze wire ropes were used at Pompeii, but it was not until the nineteenth century that drawn steel wire ropes were made and used by mines in the Harz Mountains, Germany. Subsequently, mono-cable aerial […]

    • Electric drives for trucks and heavy goods vehicles

      by Mike Rycroft, EE Publishers

      Most of the focus today appears to be on electric passenger vehicles (EPV), but there is also a significant shift towards electric vehicles in transport and haulage. A range of trucks is available with various hybrid and full electric drive options. Electric vehicles such as fork lift trucks, mine trains and other traction and transport vehicles have […]

    • The alloying elements of iron and steel

      by Jerome Strauss, 1966

      Half a century ago, metal technology recognised two separate subdivisions of the materials within the scope of its activities: ferrous and non-ferrous metals. Intense research in the intervening years has changed this early compartmentalisation. The non-ferrous field still exists, but is now defined less sharply because the gap between the alloys of iron and those […]

  • INSTALLATION & CONTRACTING: more >>

    • Cable support systems: design and installation

      by Mike Rycroft, EE Publishers

      Design of a cable support system is a fairly complex process and needs to take a number of factors into account. Cable support systems are an essential part of any large installation. The availability of standards and recommendations has simplified the process, and the development of flexible systems allows easy customisation of systems. Cables need […]

    • The secret to a good thermal image

      Information from Flir

      Thermal images are often used as evidence proof in court and must meet certain requirements; this is not achieved with a quick snapshot. The use of thermal cameras has spread to many professional environments in recent years. They are easy to handle, and thermal images are quick to take. Images can be attached to reports […]

    • Lightning protection systems for rooftop photovoltaic systems

      by Trevor Manas, Earthing and Lightning Protection Association (ELPA)

      Rooftop solar power generation systems should be equipped with structural lightning protection systems and current and surge arresters to ensure long-term operation. Photovoltaic (PV) systems are fast becoming an integral part of many electrical installations as self-generated electricity is cheaper and provides a high degree of independence from the electrical grid. Many of these systems […]