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 Combating non-ferrous metal theft shifts into top gear by Rens Bindeman, SARPA
Service providers in SA have been hard pressed installing infrastructure to supply effective telecoms, cell phone communication, electricity, water and rail transport services while others take it upon themselves to destroy these structures for financial gain... (more)
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 Contractor registration: the confusion continues
by Mark Botha, editorThe ongoing saga of the statutory registration of electrical contractors took another turn with the announcement by the Electrical Contracting Board (ECB) that its function of registering contractors had been extended until 31 August 2012... ( more) |
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Comment on the ISMO Draft Bill
Information from the Free Market Foundation
The threat of power shortages and the abrupt termination of power to certain areas show that to maintain the state electricity monopoly in its current form is not in the best interests of electricity users... (more)
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How to exercise a builder's lien
by Rob Scott and Doron Block, Edward Nathan Sonnenbergs
The following case demonstrates how a contractor, in exercising a builder's lien, may lose possession to a third party who acquires possession in good faith (the bona fide possessor), thereby foregoing the right to retain the lien... ( more)
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Insubordination at the workplace
by Shantonette Naidoo, ECA regional director, KwaZulu-Natal
As employees gain confidence in the light of the protection they get from the various labour laws and from the CCMA, they tend to become less subservient to the point where they refuse to obey instructions... ( more)
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Building codes, regulations amended
Information from SABS The building codes and regulations, which are administered by the NRCS and regulated by local government in terms of the National Building Regulations and the Building Standards Act, have been amended to embrace sustainability, commencing with energy efficiency... ( more)
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Partnership for lighting control solutions
Information from TridonicEnergy management company Schneider Electric and lighting components manufacturer Tridonic have announced a corporate partnership said to represent collaboration on projects. the companies will work together to promote energy efficient lighting control solutions... ( more) |
Lighting school presented
Information from IESSA
The Illumination Engineering Society of South Africa (IESSA) is presenting a lighting school for those who would like to obtain a better understanding of basic design and measurement in illumination engineering... ( more)
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Vector Inbox: letters to the editor
In response to your editorial on the current national skills shortage (Vector, April 2012, page 3) I would like to ask for partners in addressing the situation... (more)
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Energy saving showerheads at no cost
Information from MagnetEskom has awarded electrical equipment and industrial instrumentation supplier Magnet and energy efficiency company Energywise to distribute and install energy saving showerheads at no cost to organisations with multiple shower facilities... ( more)
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Light intensity of a hybrid-powered CFL and LED using 3D electronic vision
by RD Nell and Prof. MTE Kahn, CPUT
How 3D electronic vision can be used for rotation of a solar panel in the use of incandescent, CFL or LED lighting. The light intensity from solar powered CFL and LED lighting, as well as how the solar panel, battery setup and grid supply are used in a hybrid electrical setup for day and night time lighting are measured... ( more) |
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Pilanesburg Convention Centre lighting project: six years on
Information from Giantlight
In a June 2007 article in Vector, Giantlight described how a 20-year-old incandescent-based lighting system at Sun City's Pilanesberg convention centre was replaced with 4998 LEDs. Today, six years or some 65 000 hours of non-stop functioning later, not a single failure has occurred and the installation is functioning perfectly... (more) |
The effect of peak load shift to off-peak periods on pumping systems
by Prof. M. Kleingeld, Dr. J.C. Vosloo and J.A. Swanepoel, North-West University
Demand side management (DSM) initially focused on reducing the Eskom evening peak, but the electricity demand profile, although reduced during peak periods, has broadened in recent years. The utility also has a problem with base load supply between the morning and evening peaks... ( more) |
Source stabilisation of single-phase induction motor-pump configurations
by Dr. R Gouws and M Swanepoel, North-West University
The effect of source stabilisation on the energy consumption and harmonic distortion of a single-phase induction motor-pump configuration for a swimming pool in South Africa... ( more)
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Energy efficiency through optimisation of water reticulation in deep mines
by Dr JF van Rensburg, A Botha, Dr G Bolt, North-West University
Water usage at different deep-level mines varies greatly, between 1,25 kl and 4,15 kl per ton of rock mined, which means that some mines may be using water inefficiently... ( more) |
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Water: a resource too precious to waste
Information from Schneider Electric
Globally, water has become a strategic resource. The challenges surrounding water stewardship and management do, however, vary from one country to another. This tricky environment is further compounded by factors such as pressure to reduce operating expenses and to curb energy consumption... ( more) |
The fieldbus outside the field
Information from ABB
The importance of computer simulation as a tool is growing in all areas of engineering. In industrial control, simulation is an effective way to minimise effort for test preparation, provide imitations of comprehensive systems under test, and to enable systems to be tested dynamically on the shop floor... ( more) |
The growing importance of power supply efficiencies
by David Norton, Vepac Electronics
Many factors are driving designers to improve power supply efficiency - from going green to simple rand and cent. Simply put, power supply efficiency is measured by comparing the AC power going into the power supply to the DC power coming out of the supply... ( more) |
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