Archive for June, 2012

Rail-mount power supply

The Flex range of rail-mount power supplies is available with 1, 2 and 3-phase input, up to 500 W, and with current rating ranging up to 25 A and a power flexibility that reach the 50% of the rated current In. The ambient temperature rating allows for operation up to 60°C. Adel power supplies featuring […]

New addition to SAEE Energy Awards in 2012

The Southern African Association for Energy Efficiency (SAEE) has introduced into the SAEE Energy Award the SAEE Energy Patron Award. The SAEE annually recognises excellence among new energy companies, persons who have joined the energy industry recently, or persons and companies who have made outstanding contributions to improving energy efficiency and reducing CO2 emissions, as […]

CPAP indices update key findings for May 2012

Table 1: Work group indices. The work group indices for May 2012 show relatively large monthly percentage changes in a number of the work groups reported on by Statisticss SA. Monthly percentage changes in the index figures range from -6,2% for Work Group 113 to 2,8% for Work Group 154. The Consumer Price Index for […]

Using thermal mapping at the data centre

by Gregory Stockton, Cooling the servers in data centres efficiently is critical to increasing IT reliability, maintaining high performance, and reducing electrical usage. Computational fluid dynamics (CFD) modeling is sometimes used to help design the cooling systems of data centres by simulating delivery of cooled air by the computer room air conditioning (CRAC) units, […]

Demolition hammer for concrete, stone, asphalt

Bosch has launched a new demolition hammer for demolition work in concrete, stone or asphalt: the Bosch GSH 27 VC Professional. With its impact energy of  6 J, it is described as the world’s most powerful electric breaker. The tool achieves an average material removal rate of 3,2 t per hour (in accordance with EPTA […]

New generation rotary hammer

Bosch is replacing the GBH 2-26 DRE Professional models with a new rotary hammer generation. The future models, the GBH 2-28 DV Professional, offer 50 W more power and 20% more impact energy than their predecessors. At the same time, vibration has been reduced by nearly 30%. This is made possible by active vibration damping, […]

Proposed smart grid stakeholder engagement approach

Information from South African Energy Development Institute (SANEDI) The purpose of this document is to present a model which could facilitate, co-ordinate and integrate the Smart Grid related activities in South Africa. The electricity supply industry in South Africa is confronted with many challenges. Download the PDF document

Monitor overall site productivity and project status

Version 2,4 of Vision Link software powered by Trimble integrates site productivity data, fleet and asset management, and materials and volumes movement information using 2D Project Monitoring. In addition, VisionLink Mobile takes the power of VisionLink to the field, giving contractors the ability to view productivity data on mobile devices. Contractors can drill down to […]

Grade control system extends functionality

The addition of GPS guidance to the GCSFlex Grade Control System extends the system’s functionality and allows a contractor to work faster and with more freedom than other traditional laser-referenced grade control systems for excavators. With the benefit of GPS guidance and in-field design templates created directly from the cab on the Trimble CB450 Control […]

Motors for desalination plant

WEG Electric Motors has supplied 62 self-monitoring motors for the recently-opened 55 000 m3 per day Trekkopje sea water desalination plant in Namibia. The plant is the largest of its kind in sub-Saharan Africa in a country where 98% of the land is considered arid or semi arid. The motors, which range from 18,5 kW […]