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Issue No 89                                                                                             April 2015
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Mark Mfikoe
ECA(SA) takes on technical vocational education, training
by Mark Mfikoe, ECA(SA) 
 
The ECA(SA) emerged from a strategic conference with a firm commitment to establish a technical vocational education and training (TVET) college to service the electrical contracting business environment... (more)

Chris Yelland Kusile automation contract cancelled, reinstated with ABB
by Chris Yelland, investigative editor, EE Publishers


Eskom announcesd the termination of the approximately €100-million (some R1-billion) control and instrumentation (C&I) works contract placed with Alstom in 2011 for its 4800 MW Kusile power station... (more)
Michael Straton
ECA(SA) sets five-year strategic goals
by Michael Straton, ECA(SA)
 
The ECA(SA) National Executive Committee, which consists of member representatives and senior management from all regions, met between 3 and 5 March 2015 to consider the association's strategic options going forward... (more)
Optical measurement guidelines for high-power LEDs and SSL products 
Information from Philips Lighting SA

Calibration procedures and operating guidelines for integrating spheres measuring the optical performance of LED and SSL products. Measurement standards are needed to make a fair comparison between SSL and LED products from different vendors... (more)
Thermal management of LEDs: looking beyond thermal conductivity values
Information from Vepac Electronics

The application of specifically designed and formulated chemical products for thermal management applications, particularly within the rapidly-expanding LED industry. Specifically designed and formulated chemical products are widely used in the electronics industry... (more)
Transfer switch 101
by Charlie Hume, Eaton 

Transfer switches support multiple operation modes, switching mechanisms and transition types. This introductory guide will help facilities managers choose the right switch for their specific requirements... (more

Understanding resonance essential for solving vibration problems 
by Eugene Vogel, Schneider Electric
 
Severe vibration can destroy bearings, ruin shafts and potentially disrupt production. This article explains the differences between structural resonance and rotor critical speeds in multistage pumps, turbines and motors... (more
Extend maintenance cycles with a safer, faster and lower-cost diagnostic option
by Jerry Michaelson, ABB
 
Using radiography to inspect switchgear minimises downtime and cost while removing the risk of contributing further errors or of causing damage in reassembly. Inspecting switchgear the traditional way is not a simple matter... (more)
Six simple steps to selecting an optimal air motor solution
Information from Dowson and Dobson
 
Air motors are more efficient, cost-effective and environmentally-friendly than standard electric motors but selecting the appropriate motor can be daunting. While selecting the optimal air motor is not difficult, numerous factors must be considered... (more
Vector Inbox

In this issue, our readers discuss copper cable theft and its effects on SA's municipalities, and question the findings of the Demand Side Workgroup of the Southern African Power Pool (SAPP), which met recently in Johannesburg.
.. (more)
 
Information from Tracesol 

A case study highlighting the problems experienced when managing tools and equipment, and an outline of a solution implemented at an Eskom training centre.
.. (more
Insulation resistance and electrical testing for HVAC compressor motors
Information from Comtest

Resistance and electrical testing tips for heating, ventilation, air-conditioning and refrigeration (HVACR) mechanics. Heating, ventilation, air-conditioning and refrigeration mechanics rarely rely on a single test to pass or fail a function or process... (more
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