Vector Inbox June 2014

  Submit your letters to vector@ee.co.za and be in line to win a prize. This month, a reader responds to Prof. Philip Lloyd’s Lead Editorial, “Just what is ‘sustainable development’?” (see Vector, May 2014). Our winning letter Dear Editor I would like to offer comment on Prof. Philip Lloyd’s letter about sustainable development. I am […]

Q&A: Ask an expert

  In this article, we talk to IESSA technical adviser Connie Jonker about LEDs and find out whether cost-benefit studies have been conducted on them; whether manufacturers’ temperature-rise and lifetime claims hold truth, and whether we should be concerned about some imported LEDs, among others. Are there cost-benefit studies available on these lighting sources? Cost […]

The role of engineers and the technical media in civil society

  This paper was presented on 6 April 2014 by Chris Yelland, managing director at EE Publishers, at the Civilution Congress 2014 held at Emperors Palace, Kempton Park, South Africa, from 6 to 8 April 2014. Background to the prevailing environment First some background on the prevailing environment in which we find ourselves as engineers […]

Vector Inbox April 2014

This month, our readers warn that personal liability has been imposed for non-payment of pension funds; respond to issues on the new IEC164-6 plug and socket configuration and explain why VC9012 only covers portable luminaires and luminaires which are handled frequently. Our winning letter Re: IEC164-6 plugs, sockets: why re-invent the wheel?”, Vector, March 2014 […]

Q&A: Ask an expert

In this article, we talk to IESSA technical adviser Connie Jonker about the claims made about energy-saving lamps; how the user should decide between LED and CFL; whether the wattage and efficiency claims are tested, and on the effect they have on power factor. Can the end-user have faith in the claims made about “energy […]

Industry is still missing opportunities to save energy

  Research commissioned by ABB has confirmed that energy efficiency remains a high priority for executives in industry. Of more than 300 surveyed in the manufacturing and power sectors by the Economist Intelligence Unit (EIU), almost all said energy efficiency will remain a crucial success factor for their companies in the next two decades. But […]

Vector Inbox March 2014

This month, our readers address the issue of temperature rise in minisubs; question the new VC9012 standard for luminaires; express general dissatisfaction with the new IEC164-6 plug and socket configuration, and comment on the state of the skilled labour force, among others. Our winning letter Temperature rise in minisub transformers Dear Editor I would like […]