Impregnating varnishes and resins are routinely used in the manufacture and repair of electric motors and generators. The objective of this article is to demonstrate how impregnating resins are selected to become an integral part of an electrical insulation system, to directly influence and enhance the operating performance of rotating electrical machines in service.

Take note
•Impregnating resins are an integral part of the electrical insulation system.
•Compatibility of insulation systems is achieved by using an engineered combination of material, resins and process.
•A properly designed and implemented system ensure long-term reliability.


About the author
John Phillips is a chemist by profession, with extensive experience in the formulation and manufacture of resins for the electrical industry. He was founder and MD of Epoxylite UK Ltd for 20 years, which was subsequently acquired by Altana Chemie, the leading producer of electrical insulating resins in the world. He is currently MD of Elantas UK Ltd, a Division of Altana.Elantas is locally represented by Wilec.
For more information on the article please contact Paul Senior, Wilec on (011) 629 9300 or pauls@wilec.co.za.

CHI Control focuses on Nkomati RWW manufactures Schneider's NEX switchgear Alstom Large Motors targets 40% production capacity increase Rockwell launches Allen-Bradley controller Total motor package provides multiple benefits Sugar mill chooses CMG

The times they are indeed a changing in so far as lightning protection standards in South Africa are concerned. South African National Standard (SANS) 10313 is in the process of being revamped and updated and the public draft is out for comment, with an anticipated approval and release date in the first half of 2008. All references in this article to SANS 10313:2008 refer to the draft standard circulated for public comment on 30 October 2007.

Take note
The draft standard has been issued for public comment. Readers are encouraged to obtain a copy from the South African Bureau of Standards (SABS) and to use the opportunity to make constructive comments.
Contact the bureau on (012) 428 7911


About the author
Ian McKechnie is a registered Professional Engineer (PrEng) with the Engineering Council of South Africa (ECSA). He is also a registered Professional Construction Project Manager (PrCPM) with the South African Council for the Project and Construction Management Professions (SACPCMP). Ian holds a BSc(Eng) degree in Electrical and Electronic Engineering from UCT and is a Fellow of the South African Institute of Electrical Engineers (SAIEE). He is presently the 2007/8 President of the SAIEE and is a past chairman of the SAIEE Measurement, Computation and Control Section. Ian is also an Associate of the Association of Arbitrators. He is an Honorary Research Associate at the University of the Witwatersrand.

Ian is the Managing Director of Innopro, the Centurion-based specialist consulting engineering and solution provision company. The company is actively involved in South Africa and internationally in the fields of industrial EMC, earthing and lightning protection, in application areas including airports, telecommunications, IT, petrochemical, and general industrial and commercial infrastructure and the company project team has national and international experience in these fields. Innopro also provides consulting, design and project services in electrical and electronic systems and infrastructure. The company is also very active in the field of forensic engineering and investigations.

Ian can be contacted on (012) 667 5151 or ianmac@gafrica.com.

Safe overhead line operation Comprehensive protection for hard working electric motors Two-port RS422/485 PCI comm card with surge protection Protection for ISDN lines SPD for coaxial connection

ZEST Group acquires Shaw Controls Automated conversion to Citect SCADA SEW's whistle stop tour of Kathu in the Northern Cape SAIEE sets up memorial bursary fund Eastern Cape distributor takes prestigious award Obituary - Greg Till

WSP upgrades Sun City's power Chevron orders Natus Energon switchgear Spescom announces results ABB wins $45 million power order in Angola Zambian power industry expand to meet demand

The more you know about fluid level sensors—from sight glasses to guided-wave radar to lasers—the happier you will be with the technology you choose for your own application.

About the author
Kevin Hambrice began his career as a power plant engineer and later found marketing to be his real niche. His passion is communicating through technical writing, speaking and training. This has allowed him to lead dynamic sales and marketing organisations to new levels of achievement. He has identified and helped companies create multi-million dollar markets, market niches and launch new profitable product lines and services. Kevin currently holds the position of director: Marketing and Customer Service at K-TEK Corporation.
Kevin can be contacted on khambrice@ktekcorp.com.
Take note

•Level sensing devices range from the simplest sight glasses to the most sophisticated electronic devices.
•Modern sensors are becoming increasingly user-friendly and robust.
•The trend is towards level sensing by way of time of travel measurement.

Endress+Hauser launches Deltapilot S FMB70 Liquid mass flow sensors for OEM-applications Measuring bulk materials with radar New level measurement options from Burkert Calibrating level measuring instruments Pressure transmitter with LED display Hydrostatic pressure measurement in the water and wastewater industries

Water is a precious resource in South Africa. This problem is particularly acute in the Western Cape Region, where water usage has been rising rapidly and is expected to reach crisis levels soon.

The Berg Water Project (BWP) is the culmination of a 14-year process by the Department of Water Affairs and Forestry to identify appropriate measures to address the pending water shortage in the Western Cape.

About the author
Clive Maasch has his N6 national technical certificate in electronics, BMR marketing certificate from UNISA and a marketing diploma from Damelin College. He has 15 years sales, marketing and engineering experience in the telemetry, wireless and industrial automation market sectors. Clive currently holds the position of sales and marketing director of SSE-Group and is the managing member of SSE Cape.

Clive can be contacted on (021) 552 0420 or clive@sse.co.za.

True intelligent power protection A battery monitoring solution Netcare uses Cummins power care APC-MGE enhances data centre infrastructure Integrating to provide best service and products

There is much confusion in the marketplace about the different types of Uninterruptible Power Supplies (UPSs) and their characteristics. With so many types of UPS systems on the market today, it’s important to understand how the different devices operate as well as the strengths and weaknesses of each system in order to make an educated decision as to the appropriate UPS topology for a given requirement.

Take note

•Six types of UPS can be identified.
•No UPS-type is ideal for all applications.
•In all cases, the ultimate performance is governed by the quality of design and manufacture.


About the author
Carl Kleynhans, regional director: Africa at APC-MGE, a company of Schneider Electric, offers a comprehensive product and solution range for critical IT and process.

Carl can be contacted on (011) 465 5414 or Carl.Kleynhans@apcc.com.