Comparison of arc resistant design solutions In our previous posts regarding arc proof design [1, 2] we have discussed the danger and possible fatal impact of arc flash. We have listed the guiding standards and presented the most common solutions to achieve arc resistant design. So the logical step now Read more…
Arc resistant design solutions In our introduction last time we have explained the danger of an electric arc flash for the personnel and the equipment. The arc reaches extremely high temperatures and releases pressure and sound waves into the surrouding. Besides personal protective equipment (PPE) the risk of an arc Read more…
Arc resistant design:Introduction Personal safety stands on the top of agenda of many companies. When talking about medium voltage electric compartments then arc fault is one of the main concerns. Uncontrolled electric arc may have devastating impact on the personnel around and of course on the hardware itself. In this Read more…
VFD safety functions In this article you will read about VFD safety functions, their importance and principles. Safety is on top of the agenda for most companies, at least in all developed countries. One top manager calls safety one of the key elements for the “license to operate”. VFDs and Read more…
Dream VFD You may think that the title of this article – dream VFD – does not sound very serious. However, let us elaborate on the topic a bit. It actually is a serious question: How does your dream VFD look like? What are the features of your dream VFD? Read more…
How to choose a medium voltage VFD:Protection concept A variable speed drive system with gaps in protection philosophy is a ticking bomb. It might have a huge impact on plant availability and potentially also on personal safety. Therefore, no compromises shall be accepted. Other topics in this series are definitely Read more…