The importance of reliable control power

  Today’s power systems have the potential to be more reliable, easier to maintain and simpler to diagnose than ever before. This is made possible by the advent of microprocessors now available in everything from protective devices to programmable logic controllers (PLCs) to monitoring and diagnostic devices. While technology is rushing forward, the underlying implementation […]

Reliable power for data and telecommunications sites

  Fuel cells are finding increasing use in the ICT sector, both as back-up power and as primary power sources, and are proving to be an effective alternative to traditional battery and diesel generator backup systems, in a variety of applications, from small remote telecommunications sites, to large data centres. Fuel cell technology features both […]

Lightning and surge protection for rooftop PV systems

  According to the South African Photovoltaic Industry Association (SAPVIA), photovoltaic (PV) is the fastest growing power generation technology in the world. Between 2006 and 2009 the installed capacity globally grew on average by 60% per annum. These systems are exposed to all weather conditions and are expected to be able to withstand them over […]

Benefits of continuous improvement in energy management

  Using its own energy monitoring system, Endress and Hauser detected that the ventilation system of one of its buildings was using almost three times the energy of any other. As a result, the company starting looking for a method of improving its energy saving and efficiency programme at its production centre. In 2012, in […]

Industrial power and energy savings initiatives in South Africa

  The electricity crisis of 2008 sparked an unprecedented interest in electrical energy efficiency. In the previous era of the cheapest electricity in the world and an abundant supply, little attention was paid to efficiency of electricity usage. The crisis resulted in numerous initiatives by government, the utility, industry associations and consumers, all aimed at […]

Industrial power quality standards

  Power quality becomes more and more important as energy efficiency equipment is brought into use in industrial networks, and as embedded generation is installed in distribution networks and own generation equipment is brought into use by industrial users. This article examines the standards for both utility networks and industrial users. All networks, however well […]

Connecting and sealing cables in the mining industry

  The connection and sealing of cables to electrical equipment used within any industrial project is an important aspect of the safety and ultimate success of the project, but often a source of significant aggravation when things go wrong. This is none more relevant to anywhere else than in the mining industry, due to a […]

Replacing a HV mining substation with a modular design

  Mining sites are often located in some of the most inhospitable and logistically challenging areas of the world. Mining operators are increasingly turning to the modular “e-house” design for their electrical systems to overcome these challenges. TGood Electric successfully applied the concept to a 110 kV high voltage mining substation in central Asia. Located […]

Grounding methods in mission critical facilities

  Many factors must be considered when designing the electrical system for critical facilities, such as winders on mines, not the least of which is the type of grounding system to be used. Proper grounding reduces overvoltages, improves uptime, and isolates faults. Grounded systems offer many benefits over ungrounded systems [1, 2, 3]. When properly […]