Tag Archives: Uninterruptible Power Supply (UPS)

Damaged X-ray Equipment at Major Health Care Center

Published by Dranetz Technologies, Inc. Website: Dranetz.com  Severe power quality problems damaged X-ray equipment, costing $100,000 in one instance. The source of the problem was the switch over from utility to generator power, during regular testing and emergency situations. Figure 1 (below) identified the cause of the problem, an out-of-phase transfer, captured by On Power with aContinue reading “Damaged X-ray Equipment at Major Health Care Center”

UPS Problem at Datacentre

Published by Unipower AB, Case Study: UPS Problem at Datacentre, Date: January 29th, 2017. Email: info@unipower.se Summary A software development company builds a new datacentre and experience problems with the UPS units and a hard drive failure. A monitoring system, PQ Secure from Unipower AB, was installed and it could be determined that the UPS units,Continue reading “UPS Problem at Datacentre”

Critical Electrical Loads – How to Supply and the Use of UPS Units

Published by Prof. Silviu Darie, PhD (EE), Technical University Cluj Napoca, Romania, Honorary Member of the Romanian Technical Sciences Academy. Email: silviu.darie@enm.utcluj.ro. Abstract: Based on the author’s experience in designing power systems for critical loads, the paper presents the ways of supplying essential loads, the distribution system layout configuration, the uninterruptible power supply sources (UPS), theContinue reading “Critical Electrical Loads – How to Supply and the Use of UPS Units”

Usability Evaluation of PEM Fuel Cell and Supercapacitors Application in the Emergency Power Backup System

Published by Marek MALINOWSKI, Jacek CHMIELOWIEC, Grzegorz PAŚCIAK, Tymoteusz ŚWIEBODA, Electrotechnical Institute, Division of Electrotechnology and Materials Science Abstract. Evaluation of FC/SC-based UPS has been done in terms of energy containers usability in the power emergency generation system. The Uninterruptible Power Supply delivers electric support for connected loads basing on hydrogen energy direct conversion intoContinue reading “Usability Evaluation of PEM Fuel Cell and Supercapacitors Application in the Emergency Power Backup System”

Selected Methods for Improving Power Reliability

Published by Krzysztof PRZYSTUPA1, Lublin University of Technology (1) Abstract. The article discusses the problem of the widespread use of devices that require increased quality electric power supply. An example of a practical division of electricity receipts into several categories is shown. Methods of increasing the reliability of power supply are described and the mostContinue reading “Selected Methods for Improving Power Reliability”