High frequency Alternating Current (AC) tangent delta

Power cables are constantly subjected to thermal, electrical and mechanical stresses during their service life which leads to ageing of the insulation material. Ageing of the insulation means that the insulator degrades or gets older. When the insulation is degraded it does not have the same physical properties as compared to the new cables, which basically means that the risk of failure has been increased. So, it is necessary to carry out a diagnostic test to resolve the possible problem that may occur in cable insulation so that precautionary action can be taken to avoid unnecessary in-service failure of the underground cable [1]. Dissipation factor or tangent delta measurement in either time or frequency domain are used to identify water tree degraded XLPE cables with high moisture content or moisture ingression through poor jointing, diagnostic tests based on [2], [3]. In practice, standard laboratory electrical test equipment utilizing power frequency (PF) i.e. 50Hz to 60Hz testing is used. Hence, large static transformer was installed in the laboratory to cater any large capacitance test sample for high voltage testing. These existing tangent delta diagnostic test methods are bulk assessment technique that cannot sectionalize or pin point the water tree or any other conductive defect. In addition, both this tangent delta measurement technique which utilizes standard 0.1Hz and 50Hz equipment is not capable to extract the tangent delta values of accessories from the bulk assessment. It can only diagnose the overall condition of the complete cable system that includes cable, joints and terminations. Since medium voltage underground (MVUG) cables in utilities are in service for many years, it is crucial to develop a method to sectionalize or identify the defective components

Tracking Chart 2002 Nike, El Salvador 01032209A

This document is part of a digital collection provided by the Martin P. Catherwood Library, ILR School, Cornell University, pertaining to the effects of globalization on the workplace worldwide. Special emphasis is placed on labor rights, working conditions, labor market changes, and union organizing.FLA_2002_Nike_TC_El_Salvador_01032209A.pdf: 12 downloads, before Oct. 1, 2020

Performance Indicator Analysis of Proficiency Criteria in the Drug-Testing-Laboratory Certification Process of the DHHS

The authors highlight and propose remedies for problems in the proficiency criteria used in certifying laboratories for drug testing federal employees in the United States

Employment with a Human Face: Balancing Efficiency, Equity, and Voice

John W. Budd contends that the turbulence of the current workplace and the importance of work for individuals and society make it vitally important that employment be given a human face. Contradicting the traditional view of the employment relationship as a purely economic transaction, with business wanting efficiency and workers wanting income, Budd argues that equity and voice are equally important objectives. The traditional narrow focus on efficiency must be balanced with employees\u27 entitlement to fair treatment (equity) and the opportunity to have meaningful input into decisions (voice), he says. Only through a greater respect for these human concerns can broadly shared prosperity, respect for human dignity, and equal appreciation for the competing human rights of property and labor be achieved. Budd proposes a fresh set of objectives for modern democracies—efficiency, equity, and voice—and supports this new triad with an intellectual framework for analyzing employment institutions and practices. In the process, he draws on scholarship from industrial relations, law, political science, moral philosophy, theology, psychology, sociology, and economics, and advances debates over free markets, globalization, human rights, and ethics. He applies his framework to important employment-related topics, such as workplace governance, the New Deal industrial relations system, comparative industrial relations, labor union strategies, and globalization. These analyses create a foundation for reforming employment practices, social norms, and public policies. In the book\u27s final chapter, Budd advocates the creation of the field of human resources and industrial relations and explores the wider implications of this renewed conceptualization of industrial relations