Mark Maher's Latest Posts

There's a Disturbance in the Force

25-Aug-2017 12:08:04

As the volume of electronic equipment in use continues to grow across the commercial and industrial sector, the issue of power quality is becoming ever more pressing.

The term ‘harmonic distortion’ is confusing to many, yet its principles can be made simple when you start with the basics. Commence ‘Harmonics 101’: The electricity that is supplied via the mains has a continuously changing voltage. The voltage has a sinusoidal waveform, oscillating 50 times per second (AKA 50Hz Alternating Current).

When you consider a simple electrical device, such as a kettle, whilst in use its heating element draws electrical current, in the same smooth (sinusoidal) waveform of the mains voltage. This is known as a ‘linear load’, because the current drawn is exactly proportional to the voltage that is applied. There is no distortion from a linear load.

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Topics: News, Efficiency, Power Transmission, TCO

Reliability Measurement You Can Rely On

31-Jul-2017 06:08:00

At a recent ERIKS safety, training, energy and productivity event hosted by Festo, ERIKS Technical Manager Mark Maher made a potentially controversial point. Energy-efficient products, he said, will not reduce operating and production costs as effectively as avoiding unplanned loss of production.

That’s an easy claim to make, but sounds like a tougher situation to achieve.

As Mark explained, using Mean Time Between Failure or Mean Time To Failure (MTBF MTTF) data to measure equipment reliability is inconsistent, and to predict failure is not reliable. That’s mainly because MTBF data is based on statistical analysis of a very large number of devices, and doesn’t relate to any single component.

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Topics: News, Best Practice, Condition Monitoring, Engineering, Preventative Maintenance

Below the Belt - Are Your Pulleys Costing You?

26-Nov-2014 07:00:00

fenner_belt_drivesThe traditional cure for an inefficient belt drive has been to simply replace the worn belt with a new one. However, Mark Maher, Technical Manager at ERIKS UK, argues that the replacement of a pulley is actually the far more effective way to resolve the problem.

Looking beneath the surface

Belt drives, which operate through friction between belts and pulleys, are commonplace in many industrial applications, ranging from fans, pumps and compressors, to conveyors, mills and crushers.

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Topics: Best Practice, Efficiency, Power Transmission

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