Electricitiy + Control February 2015

TRANSFORMERS + SUBSTATIONS

ROUND UP

LV panel range successful in latest IEC standard testing

Shaw Controls , a member of the ZestWEG Group , has successfully concluded a programme of product tests on its low voltage range of panels at the SABS-NETFA laboratory.Tests were performed in accordance with the latest IEC protocols, namely IEC 61439-2 Ed 1 / SABS 61439. “Shaw Controls has recognised a trend in the market whereby clients are requesting 690 V as their primary voltage, and in that regard we have taken the initiative of testing our product range at 690 V.The successful tests demonstrate Shaw Controls’ engineer- ing capability and build quality, which reaffirms our commitment to the industry,” Bevan Richards, managing director at Shaw Controls, says. The latest certification not only gives the company a significant advantage in the local market, but boosts the capability of the Zest WEG Group to offer a total solutions approach to its customers. Enquiries: Kirsten Larkan.Tel. 011 723 6000 or email kirstenl@zest.co.za

Santos Ferreira, Product Development Specialist at Shaw Controls, facilitated the testing of the Motor Control Centre (MCC) panels submitted for IEC testing.

High pressure waterblast hose ensures operator safety

Power management company Eaton has launched the new Safeshield EC910 high pressure waterblast hose for their cus- tomers in Africa. This engineered hose is designed to ensure the highest levels of safety in settings where workers are per- forming non-polluting industrial cleaning, stripping and removal of corrosion, paint, chemical and organic residues. “With pressures high enough to meet even the most stringent waterblast appli- cations, the Safeshield EC910 hose is the latest in Eaton’s long line of high-quality waterblast hose assemblies,” said Leonard Myburgh, product manager, Eaton, Africa.

“This next generation hose is custom de- signed to perform at five times the industry impulse cycle life requirement, demon- strating Eaton’s dedication to reaching the highest levels of reliability, operator safety and commitment of building amore energy efficient Africa.” he added. Capable of withstanding operating pres- sures as high as 1 100 bar (16 000 psi), EC910 meets and exceeds the Internation- al Organisation for Standardisation (ISO) 7751 requirements. It is constructed with heavy steel wire reinforcement, featuring Eaton’s highly abrasion resistant Dura-Tuff hose cover, providing excellent flexibility,

long service life and ease of handling in the field. EC910 is available in sizes -08, -12 and -16, approved for working pressures from 1 100 bar to 690 bar (16 000 psi to 10 000 psi), respectively, with a burst factor of 2,5 times the normal working pressure. Eaton’s waterblast hoses are assembled by professionally trained personnel to ensure the highest quality available. These hoses are also available in 15 m (50 foot) and 20 m (66 foot) lengths, with the following qualified hose fitting styles: male NPTF, DKO, and BSPP. Enquiries: Leonard Myburgh.Tel. 011 961 2400 or email LeonardMyburgh@Eaton.com

Controlled access and high level of cleanliness

LH Marthinusen ’s Johannesburg transformer manufacturing and repair facilities needed to ensure that entrance to their winding shop was subjected to a controlled access process to guarantee the highest levels of cleanliness. Based on Apex Strip Curtains & Doors’ reputation and product offering, LH Marthinusen selected

quality heavy duty doors formed a focal point of our ongoing im- provement programme to retain preferred supplier status,” says Corné Pretorius, electrical planner for large transformers at LH Marthinusen. Pretorius is particularly pleased with the durability provided by the bull nosed edge on the perimeter edges of the door.

“The doors are subjected to a fair amount of knocks and bumps and have to date shown absolutely no signs of wear.This is an impor- tant factor, contributing to the reliability and longevity of the door, which in turn ensures that the environmental impact on the insulated winding facility is kept to a minimum over extended periods of time.” High bumpers are also fitted to the door panel to further absorb impact from forklift trucks and carts and reduce stress on hardware and mount assemblies. Enquiries:Wim Dressing.Tel. 011 452 8723 or emailWimSnr@apexstrip.co.za

their SR 9000 heavy duty insulated impact traffic door. Apex delivered and installed the two double doors and two single doors after assessing the optimum solution for the facilities. “By ensuring that the lowest possi- ble amounts of dust and other contaminants enter the section where winding assembly takes place, we are able to improve trans- former lifespan. Our existing barriers included wooden doors, which were unable to ensure the high levels of cleanliness we required. One of our larger clients regularly performs site inspections and the inclusion of superior

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