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A step-by-step process for selecting an appropriate termination that is commensurate with a particular shielded power cable design is provided in this guide. Over the years, shielded power cables have been developed that employ many different insulating materials and many different shielding systems, such that, there are numerous issues to consider when selecting a termination for a particular cable design. Over the same period of time, many different termination methods and designs have been developed that serve the same purpose, but employ different application methodologies. This guide does not attempt to cover every cable and termination design, and is generally restricted to single conductor underground residential distribution (URD) and shielded power cable that have a voltage rating from 5 kV 46 kV, which includes some industrial cables. By nature, the terminations referred to in this guide are considered to be "live front," in that the terminations comprise a transition from a shielded power cable system to an energized component or bus that is either bare or simply covered.
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Although the standard permissible operating temperatures of various types of equipment are different for one reason or another, this causes little or no difficulty except where two kinds of equipment with different temperature limits connect together directly. This guide is issued as an aid in determining proper cable termination practice, as related to temperature correlation, when making connections to electric equipment. The data presented in this guide supplements the standards of the AIEE or ASA and other applicable standards, which should be observed. This guide is prepared in the form of a general section which relates to the temperature correlation problem as a whole, covering those points which are common. Individual equipment sections may be issued later and will consider special aspects identified with particular types of power equipment.
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Recommendations regarding mineral oil tests and evaluation procedures are made in this guide; references are made to methods of reconditioning and reclaiming conventional petroleum (mineral) dielectric insulating liquids; the levels at which these methods become necessary; and the routines for restoring oxidation resistance, where required, by the addition of oxidation inhibitors. The intent is to assist the power equipment operator in evaluating the serviceability of mineral oil received in equipment, oil as received from the supplier for filling new equipment at the installation site, and oil as processed into such equipment; and to assist the operator in maintaining mineral oil in serviceable condition. The mineral oil covered is used in transformers, reactors, load tap changers, and voltage regulators.
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Die Bedeutung von Dämmstoffen ist ungebrochen hoch. Das Angebot steigt kontinuierlich. Durch ihre wärmedämmende Wirkung tragen sie zur Einsparung von Heiz- und Kühlenergie sowie zur Reduktion des CO2-Austoßes bei. Detail Practice Insulating Materials bietet einen umfassenden Katalog von Dämmstoffen für den Hochbau. Erläuterungen zu den einzelnen Dämmstoffarten geben Aufschluss über enthaltene Rohstoffe, typische Eigenschaften, Anwendungsbereiche und Lieferformen. Tabellen mit physikalischen Kennwerten und Angaben zum Brandverhalten sowie Hinweise zur Gesundheits- und Umweltverträglichkeit machen die Dämmstoffe vergleichbar. Ein Überblick über die europäischen Rechtsvorschriften sowie Dämmstoffnormen mit Erläuterungen zur Produktkennzeichnung und -zertifizierung hilft bei der Planung und Ausschreibung. Für die Auswahl des passenden Dämmstoffes werden Kriterien für Konstruktion und Anwendung vorgestellt. Ergänzend hierzu eröffnet die differenzierte Betrachtung der ökologischen Wirkungen von Dämmstoffen ein großes Optimierungspotenzial für ihren nachhaltigen Einsatz. Insulating materials remain as important as ever. The range of available kinds is constantly increasing. Thanks to their heat-insulating properties, they help save heating and cooling energy and reduce CO2 emissions. Detail Practice: Insulating Materials offers a comprehensive catalogue of insulating materials for use in construction. Notes on the individual types of insulating materials provide information on the raw materials they contain as well as their typical attributes, areas of application, and delivery forms. Tables with physical characteristic values and indications regarding health and environmental safety enable the reader to compare different insulating materials. An overview of European regulations and norms pertaining to insulating materials, with notes on product labeling and certification, helps with the process of planning and publishing invitations to tender. Criteria are presented for selecting the appropriate insulating material for the job. In addition, a nuanced description of the environmental effects of insulating materials opens up an enormous optimization potential for using them sustainably.
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