Graphics

A cycling and flow of knowledge and ideas.

Monday, 24 February 2014

The pain of a Neutral to Earth fault



If you are not sure what an earth leakage fault is or how the residual current devices detect it such as an ELCB, RCCB, RCBO or RCD then please look at this post where I explain what these terms are and what it all actually means.  In this post I will look at an obscure fault, which can be perplexing and describe what it is and what can cause it.

Tuesday, 18 February 2014

What are ELCB, RCCB, RCBO and RCD's?




Residual Current Circuit Breaker
RCD stands for Residual Current Device and this term can cover a multitude of devices with other acronyms such as ELCB, RCCB, RCBO and RCD. I will try to explain in this post what they are, where they might be used, what they detect and how they detect it. For a more blatant and pithy comparison of any combination of two of the above see my post "Difference FAQ...."


Monday, 10 February 2014

Power factor and asymmetric loads


Two things which give power companies headaches are poor power factor and asymmetric loads.


Power Factor.


I have been looking at power factor explanations on the Internet and have been astounded that for something that appears to be straight forward, it often appears explained in a confusing and laboured way. Even Wikapedia avoids giving a full explanation. In fact, I have only found a single source on Youtube worth listening to. Sadly I have not found a single web source that explains it clearly. So I thought I would have a go with this article on power factor.

Wednesday, 5 February 2014

Efficiency Vs Efficacy in techno speak

Often, the words efficiency and efficacy are used confusingly and interchangeably. This regularly leads to an ambiguous understanding of what is being discussed. In this post I hope to discuss the words effective/efficient their terminology and how they are used in a technical environment.

Efficiency is an objective word most often misused in a subjective way. The word efficiency can also be used to disguise poor information. Its use has the ability to trigger an emotional response, especially with the spectre of impending doom looming large.