Ex equipment: affordable safety
by Dr. Johannes Auret, Explolabs Consulting
Safety is generally considered expensive although, in theory, a higher product compliance level should result in savings. Real savings can be achieved with proper planning... ( more)
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New luminary for lighting industry
by Mark Botha, editor
New Beka MD Carl Watson speaks to Vector about, among others, his immediate priorities, today's drivers in the lighting industry, the effects of the recession and the lack of understanding of LEDs... (more)
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Proposed changes to the Collective Agreement
Information from ECA(SA)
The South African Equity Workers' Association (SAEWA) has demanded a number of changes to the Collective Agreement of the National Bargaining Council for the Electrical Industry of South Africa (NBCEISA)... ( more) |
Experts Q&A Answers from our experts
Explolabs and Certex director and explosion prevention specialist Dr. Johannes Auret answers questions on explosion protected (Ex) equipment, its use, certification and regulation, among others... ( more) |
Electronic lighting ballast survival testing
Information from GE Digital Energy
A study to review the effects of exposing energy efficient lighting systems to transient surges which may occur at typical installations within facilities... ( more)
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LED tube retrofits for fluorescent office lighting
by Prof. Ernst Uken et al, Cape Peninsula University of Technology
Two case studies show the feasibility of retrofitting LED tubes to replace fluorescent lights in single offices, as well as in suites of offices... ( more)
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The influence of VSDs on electric motor operating temperatures
by CJR Kriel et al, HVAC International, TEMM International, North-West University
The use of VSDs on electric motors can have negative effects on motors' life, depending on the application and cause harmonics, voltage spikes and operating temperature increases... ( more) |
Generator circuit breakers have special requirements for generator protection
by William Long, R Kirkland Smith and Stephen Cary, Eaton
The unique demands of protecting generator circuits and the different requirements for generator and standard distribution circuit breakers... ( more) |
Making the right choices when specifying hour meters
Information from Honeywell
Hour meters may provide the most inexpensive source of "equipment reliability insurance" manufacturers can offer with their products. Here are some guidelines for making sound choices when specifying hour meters... ( more) |
Energy management challenges in pumping station automation
by Dr. GD Bolt et al, CRED, North-West University, TEMM International and HVAC International
The technical and control philosophy challenges faced in the automation of a water transfer pumping station... ( more) |
The effect of compressed air pressure on mining production and energy demand
by SJ Bester & D le Roux, BBE Energy, & D Adams, Impala Platinum
An investigation into the possible reasons for the decrease in productivity of underground pneumatic rock drills... ( more)
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The design and application of ash handling pumps
by WA Clennell, 1958, From the ICMEESA archive
Special ash pumps are used to dispose of the ash from large power stations. This article from the ICMEESA archive reviews the development of these and discusses special design features and limitations of this equipment... ( more) |