Archive for March, 2012

Control system FDS workshop

The South African Council for Automatic Control will be presenting a one day interactive workshop on writing control system functional design specifications (FDS) for PLC and SCADA on 23 April, 2012, at the Johannesburg Chamber of Commerce and Industry in Auckland Park, Gauteng. The guidelines presented will be generic and will not necessarily align with […]

Expanded enterprise security platform

by Nick Kelso, Philips Lighting Solutions We have reached a tipping point in the development of high quality LEDs where this new technology can be used for general lighting in almost all applications. HP has announced an integrated platform of risk-driven security solutions that provides enterprises clear visibility across traditional, mobile and cloud environments, and […]

Full bridge rectifier with Mosfet

ON Semiconductor has released the NMLU1210, an innovative power Mosfet integrated circuit for wireless charging applications in portable products such as cell phones, media tablets, portable media players, digital still cameras and GPS units. The NMLU1210 is a 20 V N-channel full bridge semi-synchronous rectifier, that incorporates a dual Schottky barrier diode supporting up to […]

Using DFR to determine dissipation factor temperature dependence

by Matz Ohlen and Peter Werelius, Megger With an aging power component population, today’s electrical utility industry faces a tough challenge as failures and consequent repair and revenue loss may inflict major costs. Transformers have become one of the most mission critical components in the electrical grid. The need for reliable diagnostic methods drives the […]

Energy efficiency and renewable energy resources

by Mike Cary Pr Eng, SAIEE president Over the past century, mankind has beneficiated the Earth’s natural resources to improve their standard of living. In the process, many of the non-renewable resources, mainly fossil fuels, have become depleted. This has had the effect of increasing the cost of these increasingly scarce resources, incentivising people to […]

Drawbacks prompted an iris-free lens design

Since using an iris-free lens design, Mobitix cameras avoid the drawbacks  and limitations imposed by an auto iris, i.e. Mobitix cameras have no moving parts that can fail or lock in fluctuating temperatures. Without any moving parts, they are therefore so robust that maintenance is reduced to a minimum. The unique temperature range from -30 to […]

Local company strengthens its control and protection division

HVT has strengthened its Control & Protection division through a partnership with NR Electric Company in China. The division can offer a complete range of products and solutions in the protection, telecommunication, measurement, automation and control field. A solution provider with over 20 years experience, NR has about 45% market share in China, as well […]

Simulation-based type and acceptance testing software

RelayLabTest is powerful software for in-depth type and acceptance tests of protection devices with CMC test sets. It enables the user to assess the overall performance of protective relays under realistic operating conditions. Ideal for manufacturers and utilities, RelayLabTest offers unique modeling and test automation features. Setting up and executing comprehensive tests with a large […]

Thirty percent production capacity increase of specialty oils

Nynas, one of the global technical leaders in specialty oils, has entered into an agreement with Shell to take over full control and responsibility for the Harburg base oil manufacturing plant and some associated refining facilities of the Harburg refinery in Hamburg, Germany. The new production plant will be a core site for Nynas with […]

Quality services within the transformer sector

Dyosol’s transformer department has a combined total of 40 years management and qualified technical experience. We have vast working experience with main utilities providers in Southern Africa as well as with leading OEM transformer suppliers. Services offered include, amongst others, transformer assessment and testing, quality heat and vacuum filtration treatment, dry outs on transformers with […]