High performance liquid chromatography is one of the most powerful tools in analytical chemistry. It is used to measure the degradable paper core in a transformer and so determine the health of the transformer. This technique, in combination with other transformer analysis tests, helps limit unexpected failures, boosting productivity and profitability and providing peace of mind for electrical maintenance managers.

Take Note
• High performance liquid chromatography (HPLC) is one of the most powerful tools in analytical chemistry.
• HPLC is used to measure the degradable paper core in a transformer and so determine the health of the transformer.
• While HPLC is complex and costly the value of transformers in terms of its actual cost and the cost of their downtime justifies use of the technique.

Thermal imaging video
New digital multi-meter
Mass-flow verification and calibration
Process analysis system for optimal safety
New software strengthens company portfolio
All round analytical performance
Hygienic sensor lock-gate with EHEDG certificate
Density measurement without hassles of nuclear
ISEMAX ION-selective measuring system

Through eyes bent on efficient existence of all species within the earth environment, I for a moment contemplate the responsibility of the human race as the custodian of the earth environment we inhabit. In a way it is a privilege as well as an honour. A privilege that has become a right and in the process we have forgotten that the creation is on loan to us. If we do not take good care of it will be taken away and the result - we will have to live without all its splendour and beauty.
Take note
• The modern way of life has unwittingly caused the environment to suffer.
• Unconsciously we do more damage than we imagine.
• Remember, it is far easier to break down than to rebuild.

New applications for energy harvesting
How clear is your energy conscience?
A good time to invest in green energy
Environment critical to peace
A little light to help create a better world
New on Eskom's list

In the past few years, a trend towards slow-running direct drives has become visible. This trend is driven by a demand for utmost precision, reliability and low maintenance on the one hand, and by decreasing prices for power electronics and permanent magnets on the other. This brings us to the question if, and depending on which technical features, direct drives are on a par with or even superior to gearmotors, and what basic drawbacks must be accepted. This article contains a theoretical comparison of both drive concepts based on known growth laws and a few practical assumptions. Basically, the derived results apply to both integrated gearmotors, which combine motor and gear unit in one housing, as well as to configurations with separate units coupled by a rigid shaft. The theoretical analyses are verified by comparing a current series of planetary servo gearmotors with high torque drives of two European manufacturers.

Take note:
o The trend to slow-running drives is based on a need for absolute control and precision
o Direct drives serve an important purpose and will become increasingly popular in many applications
o It is not likely that direct drives will ever replace geardrives in slow-running standard applications

Versatile drives and soft starters
GE overhaul affords Kriel another 25 years
Second series DIN rail

Wireless technology offers benefits beyond just wiring cost savings. With a multi-functional, plant-wide wireless network, utility and power generation facilities can improve safety, reliability and efficiency through optimised employees, equipment and processes.
This article is intended to assist power industry companies in exploring the endless possibilities of wireless in plant automation. It will help end users understand what to look for in selecting the right wireless network for their requirements, and then learn how to get started with this innovative technology.
Take note
o Wireless technology has revolutionised network connectivity.
o Wireless technology is now penetrating the power industry, where security and reliability of data transfer is paramount.
o Wireless mesh networks are self-configuring and self-healing.

Fuji DP transmitters - easier to use than ever
ARP0108 Certified
Next step in hazardous area instrumentation

Software integration initiative
Alstom to retrofit Koeberg
Food for thought
SKF renews contract with Scuderia Ferrari Marlboro
Eskom acknowledges Honeywell
Modular home network systems
Taking orders from Egypt
A good year had by all
Rittal's energy efficiency impresses big names
Roadshows complete PneuDrive Challenge
Coal contract boosts company's order book
Versatile desktop enclosure for standard Eurocards
Standards published
Tridonic SA - new premises
State-of-the-art cutting machines critical in power station construction
Fibre optic test equipment markets grow due to demand for Bandwidth
AFL-ATOM range from IEI
Lucrative market for IPPs in West Africa
New life for Arnot
Steloy casts for Medupi
Lifan appoints distributor

Many would argue that we are now in a time of crisis. If this scenario is not yet clear to you, pick up any newspaper or call a friend in Europe or the USA. We live in a time of crisis. This article reminds us that it is often in time like this that great strides are made, and technology (and often thinking) advances substantially. A time of crisis may, therefore, not be as bad as we imagine it is. The author’s company supplies sensor technology and solutions to the South and southern African markets. The products supplied are from European manufacturers. The largest market internationally for sensor technology has always been the automotive sector – and this sector, in particular, is finding the current economic climate difficult.

Take note
o We live in a time of crisis.
o Crisis leads to innovation.
o Innovation, now, must lead to a more sustainable view of our industry.
o Sustainability implies the need to be more effective in everything we do.
o To be more effective we need to be certain that we are correctly measuring the right parameters and using the information appropriately.

Sensors resist heavy blows
Versatile design 04
Robust sensors detect direction
Design 05 for sensor reliability
Compact limit switch for space restricted applications
Flexible safety scanner
Lean and mean
Contrast and colour
Clipline complete
Where on where? FInding the elusive hydrogen molecule
Three new sensors from Tectra

Protection of electrical installations against over-voltages is one of the basic safety requirements of SANS 10142-1. These requirements are specified in clause 5.2.5 since both the installation and connected equipment have limited over-voltage withstand capabilities. Protection against over-voltages includes over-voltages of atmospheric origin (transmitted by the supply distribution system) or due to switching in the supply distribution system as well as those generated by equipment within the installation.

Take note
o Lightning protection is a risk management process.
o SPDs are an important component of a lightning protection system.
o SANS 10142-1 does not make the use of SPDs mandatory, but if used, must comply with requirements as specified.

A reliable, standby power supply that works seamlessly to support vital applications, systems and computer networks is essential in today’s business environment, which has the potential for all types of power interruptions and failures. With this in mind, reliability is a key consideration that should drive all companies’ investments in Uninterruptible Power Supply (UPS), power conditioning and back-up systems - particularly if these systems back mission critical computer equipment and communication networks.

Take note
o A reliable standby and back-up system is an essential part of any modern plant or data centre.
o A standby or back-up system can include a number of technologies, including generators and UPSs – depending on the application.
o Modern UPS systems deliver efficiencies of over 90% and, if used judiciously, can contribute to reduced power consumption.

The new dynamics of doing business, in conjunction with the latest stored energy technology developments, have encouraged respected companies to create a new form of Uninterruptible Power Supply (UPS). This UPS system has been optimised to supply high quality continuous power for the high availability requirements of today’s world enterprises. It has been able to supplant the need for lead-acid battery energy storage and yet provide reliabilities that match or exceed those battery-based systems used today. It eliminates the cyclic wear-out limitations of batteries and expands the application of UPS into wider temperature venues such as industrial applications.

Take note
o The UPS is always being redeveloped and improved.
o Often generators are compared to UPSs – although both serve specific purposes.
o The characteristics of a generator for high power can be optimally matched to a UPS.

Data centre security
Battery monitoring solution
Open frame ac/dc power supply meets safety standards
Standby generators take pain out of load shedding and tariff regulations
Efficient and ultra slim DIN rail ac/dc power supply series