Archive for July, 2012

Experts Q&A

Question: When installing an all-steel cable management structure (tray, baskets and supports) in an all-steel container for telecoms cabling (48 V DC and signal cables) with AC power and lighting – all contained in separate PVC trunking and conduit, is cross bonding required between all component parts of the DC cable management? Answer: In the […]

Brian Weldrick

It is with sadness that we report the passing of Brian Weldrick, a past president and life member of the ECA(SA), on Sunday, 24 June 2012 in Port Elizabeth, after a battle against cancer. Born on 23 March 1931, Brian grew up in an orphanage in PE and qualified as an electrician after having served […]

Financial and operational significance of OIML R 137 Class 0,5

by John Alexander, Krohne OIML R 127 Class 0,5 is a relatively new standard, created to differentiate between the existing ultrasonic flowmeters and the newer generation meters that are less susceptible to installation effects and therefore achieve higher accuracy with less restrictive upstream and downstream installation requirements. Please download the pdf

Showcasing the future of sustainable cities

Schneider Electric has showcased its headline sponsorship of Cisco House, a dynamic, connected environment that demonstrates a shared vision of transformational opportunities for countries, cities, and organisations today and in the future. Open since April 2012, Cisco House overlooks London’s Olympic Park and is dedicated to showcasing new and innovative paths to growth and efficiency. […]

Reduced form-factor for designs

Option Wireless Technology has released GTM661W, a half-size Mini PCIe form-factor module into the South African market. It has a powerful Qualcomm chipset and utilses the only industry-standard and multi-vendor footprint, Mini-PCIe. In order to complement its range of full-sized Mini-PCIe modules, Option Wireless Technology now provides features such as 14,4 Mbps HSPA connectivity, Embedded […]

Low voltage goes live

Schneider Electric recently hosted a business breakfast at Melrose Arch, Johannesburg, with the theme, “Low voltage goes live”, hosted by popular public speaker Vusi Thembekwayo. Discussed at the event were the latest developments and applications in low voltage power distribution and control, with emphasis on the company’s Micrologic “E”; Acti9 Control; Prisma SPF; NSX 690 […]

Oil-immersed transformers to meet power grid requirements

The Oil-immersed power transformers manufactured by our company are designed and developed to meet the requirements of the power grid. The technical performance is better than GB/T6451 Specification and Technical Requirements for Three-phase Oil-immersed Power Transformer, and IEC60076:2000. The products have the characteristics of low loss, low noise, low partial discharge, high over-load capacity, strong […]

Motor management relay features and benefits

The SEL-849 motor management relay supports pumping applications for water, chemicals, and petroleum; air-based applications, including fans, blowers, air handlers, and compressors; chiller applications, such as compressors and air-conditioning; and applications involving bulk materials, such as conveyors, crushers, screeners, feeders, augers, and bucket elevators. The compact form-factor 71,1 X 127,0 X 152,4 mm easily installs […]

Mobile mini-subs for temporary power

Free State Transformers is very excited and proud to deliver 15 Mobile mini-substations to Eskom. These specialised mobile Transformers are popular with mine operators in reducing their energy costs, whenever they need to relocate their mining operations or if they require temporary power. The units are designed to be connected using live-line techniques, ensuring minimal […]

Middelburg branch focuses on energy-reducing measures

The coal sector is being confronted by the same pressure to reduce energy costs as other mining sectors and Zest WEG group’s Middelburg branch is fielding an increasing number of customer requests to assess their mining operations and plants and recommend energy-reducing measures. In line with the Zest WEG group operating philosophy, large projects are […]