This article describes how to design safe, efficient operation into your machines by focusing on likely residual current scenarios. Machine builders are under continuous pressure to offer more sophisticated, energy-efficient machines with better throughput. A popular response is to use variable-speed frequency-controlled drives. Although effective, this approach can cause nuisance tripping problems or even complete […]
An oil analysis programme is anchored in Zambia Sugar’s overall business strategy and entrenched in its overall vision and mission. WearCheck serves as a key stakeholder through its decade-long partnership with the sugar producer. The constant drive to instil best practice in the sugar producer’s maintenance culture is complimented by sugar producer’s desire for continuous […]
Performance testing of high voltage motors and generators is usually carried out to determine benchmark data following a major repair. However, increasingly, customers are requiring this information as part of a problem diagnosis or to verify performance figures for a component when its essential data has been lost. To keep up with growing demand, Sulzer […]
Increased use of electronic motor drives adds complications to the use of motors in explosive atmospheres. A complex situation exists today in that not only the motor, but the effect of the drive on operations must be taken into account when considering suitability for use in explosive atmospheres. The use of high power electronics in […]
LTM Energy, by combining innovation and leadership, has assisted First National Bank (FNB) not only to save money at its Fairlands campus, but also to become a leader and role model in promoting energy efficiency and the reduction of carbon emissions across all its facilities. Following the successful appointment and implementation of a grid-tied rooftop […]
Reverse osmosis and distillation are common methods of water desalination, but energy requirements are high. Forward osmosis is a recent development that promises to reduce energy costs and operational complexity, as well as the ability to make use of low quality waste heat. Water desalination is becoming increasingly important with the pressure placed on natural […]
In the event of an emergency, it is essential that the battery system performs as designed, or the substation may be left unprotected. Although many test methods can be performed to estimate the condition of the battery, the discharge test at specific time intervals and specific discharge rates are presented as the necessary tests, and […]
Motor starters limit the inrush current and provide a managed start of the motor. Modern starters provide much more than just current limitation. The inrush current in 3-phase induction motors varies from five to seven times the rated current. In some applications, this level of inrush current may cause a significant voltage drop in the […]
Power usage effectiveness (PUE) is growing in popularity as an efficiency metric by the data centre market. While PUE is a tool to deploy an approach, or develop an implementation within a data centre, the measurement of PUE and its accuracy could have an increasingly negative impact. Where the energy manager of a data centre […]
Health and cost savings considerations are driving an increasing move towards electric battery-driven vehicles and machinery in underground and opencast mining operations. Battery powered mining vehicles were introduced in the 1980s, but it is only in recent years that large-scale adoption of the technology is being considered. A recent news report states that the market […]
