A major concern in the application of multifunction digital relays for the protection of generators is that almost all the electrical protection, including both primary and the backup relay functions, are embodied in one digital package. The failure of that package results in the loss of virtually all generator electrical protection. This paper discusses how multifunction relays can be designed...

Introduction The Riata and Riata ST implantable cardioverter-defibrillator (ICD) leads, a narrow caliber silicone lead without an outer jacket, have been shown to be prone to structural and electrical failure. While much interest has been shown in potentially lethal high-voltage (HV) failures caused by electrical short circuits due to a breach in the ethylene tetrafluoroethylene (ETFE) insulati...

– We calculate the electrical conductivity of a thin crystalline strip of atoms confined within a quasi one dimensional channel of fixed width. The conductivity shows anomalous behavior as the strip is deformed under tensile loading. Beyond a critical strain, the solid fails by the nucleation of alternating bands of solid and smectic like phases accompanied by a jump in the conductivity. Since ...

This article examines the possibility of determining the indicators for the qual-ification of personnel servicing electrical installations based on statistical data based on the frequency and duration of the work carried out by a group of electrical engineers to eliminate the failure. And also the subsequent transition to the time characteristics, showing the productivity of the work of a separ...

Electrical myotonia is known to occur in a number of inherited and acquired disorders including myotonic dystrophies, channelopathies, and metabolic, toxic, and inflammatory myopathies. Yet, electrical myotonia in myasthenia gravis associated with antibodies against muscle-specific tyrosine kinase (MuSK) has not been previously reported. We describe two such patients, both of whom had a typical...

This paper is focused on survival analysis of electrical components. The main goal of this paper is to develop a method for on-line estimation of the Mean Time To Failure (MTTF) of electrical components under dynamic stress levels. The proposed method models the variations of the stress levels as a stochastic process. Hence, a stochastic failure rate function can be developed for each electrica...