Results 151 to 160 of about 887 (212)
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2016
In previous chapters, we discussed the converter with or without fault. The common similarity between them is that they continue to operate without reduction of their nominal specification. In this chapter, uninterrupted operation of a faulty power conversion system with catastrophic damages in some of its parts is investigated.
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In previous chapters, we discussed the converter with or without fault. The common similarity between them is that they continue to operate without reduction of their nominal specification. In this chapter, uninterrupted operation of a faulty power conversion system with catastrophic damages in some of its parts is investigated.
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Ampacity derating for underground cables
Conference Record, Industrial and Commercial Power Systems Technical Conference, 1988., 2003A simple manual method of utilizing adjustment factors to derate cable ampacities for underground installations is presented. The ampacity adjustment factors reported are obtained based on the Neher McGrath method. Various items that affect ampacities of cables are discussed in practical terms and examples are included to illustrate the method and its ...
F. Shokooh, H.M. Knutson
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Understanding the subtleties of brick derating
INTELEC 07 - 29th International Telecommunications Energy Conference, 2007In most cases, the brick converter suppliers provide derating charts for their converters. One would think that it would be easy to compare the converters based on the conditions shown in these derating charts, but unfortunately by doing so one can be easily deceived. Typically these suppliers are providing this information not only as a service to the
Barry A. Ehrman +2 more
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Derating for static timing analysis: Theory and practice
2009 10th International Symposium on Quality of Electronic Design, 2009Derating is a versatile technique supported by all static timing analysis (STA) tools in industry. In essence, it enables designers to modify any delay or slew computation performed by such tools. Despite this common use in industry, the scientific literature on derating is scarce to none.
Ali Dasdan +2 more
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Power derating for invertor fed induction motors
Proceedings of 1994 IEEE Industry Applications Society Annual Meeting, 2002The aim of this work is to give a contribution to find a simple methodology for defining a power derating index for invertor-fed induction motors. The theoretical and experimental work has put in evidence the possibility of defining a derating coefficient using only no-load tests performed with a sinusoidal square wave and PWM invertor supply.
BOGLIETTI, Aldo, P. FERRARIS, M. LAZZARI
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Creating meaningful derating graphics
2017 Annual Reliability and Maintainability Symposium (RAMS), 2017Derating is the practice of selecting components with sufficient ability to withstand stresses with the intent of increasing the reliability of an electronic system. Derating tables exist within many organizations. They often only include a list of component types and a recommended derating percentage for each applicable stress. For example, capacitors
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Reliability Parts Derating Guidelines
1982Abstract : Derating can be defined as the practice of limiting electrical, thermal and mechanical stresses on devices to levels below their specified or proven capabilities in order to enhance reliability. If a system is expected to be reliable, one of the major contributing factors must be a conservative design approach incorporating part derating ...
D. C. Towns +3 more
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Derating of Electronic Components
2017<div class="section abstract"> <div class="htmlview paragraph">This Standard specifies the minimum derating requirements for using electronic components in moderately severe environments. These environments are assumed to include Airborne Inhabited Cargo (AIC), Airborne Inhabited Fighter (AIF), Ground Mobile (GM), and Naval Sheltered (NS)
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[Deratization by the use of synthetic anticoagulants].
La Medicina tropical, 2000 V, MATILLA GOMEZ, G, PIEDROLA GIL
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Creating a sensible derating system
RAMS '06. Annual Reliability and Maintainability Symposium, 2006., 2006Derating is the intentional reduction of applied stress on a component in order to assure reliability. A series of derating guides have been issued by the U.S. military services as well as other groups. Each guide, by itself, is not complete. Entries in guides are typically "rules of thumb" such as "derate at 70% of maximum power up to 70 degC and then
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