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  2. Porcelain - Wikipedia

    en.wikipedia.org/wiki/Porcelain

    Porcelain has been used for electrical insulators since at least 1878, [59] with another source reporting earlier use of porcelain insulators on the telegraph line between Frankfurt and Berlin. [60] It is widely used for insulators in electrical power transmission system due to its high stability of electrical, mechanical and thermal properties ...

  3. Insulator (electricity) - Wikipedia

    en.wikipedia.org/wiki/Insulator_(electricity)

    Insulators used for high-voltage power transmission are made from glass, porcelain or composite polymer materials. Porcelain insulators are made from clay, quartz or alumina and feldspar, and are covered with a smooth glaze to shed water. Insulators made from porcelain rich in alumina are used where high mechanical strength is a criterion.

  4. Victor Insulator Company - Wikipedia

    en.wikipedia.org/wiki/Victor_Insulator_Company

    Victor Insulators, Inc. based in Victor, New York was founded in 1893 by Fred M. Locke, and is the oldest electrical insulator company in North America. They originally made glass insulators for electrical lines. They suspended operations during the Great Depression but resumed operations in 1935 as Victor Insulators. Among their product mix ...

  5. Norsk Teknisk Porselen - Wikipedia

    en.wikipedia.org/wiki/Norsk_Teknisk_Porselen

    Norwegian Technical Porcelain in Fredrikstad on a postcard from approximately 1920-1940. Norsk Teknisk Porselen AS (NTP) is a Norwegian manufacturer of ceramic and composite insulators based in Fredrikstad. NTP mostly produces ceramic insulators for electrostatic precipitators, with sales worldwide. Founded in 1916, the first plastic product ...

  6. List of thermal conductivities - Wikipedia

    en.wikipedia.org/wiki/List_of_thermal_conductivities

    Porcelain, electrical porcelain 1940s Values ... The first run went to 1317K and then on the second run the same insulator proved to be more conductive. 1959. ...

  7. Hubbell Incorporated - Wikipedia

    en.wikipedia.org/wiki/Hubbell_Incorporated

    Polymer and porcelain insulators and arresters used in the transmission, substation, and distribution markets. Designs include suspension, station, and line post, as well as polymer insulator and arrester combinations for lightning protection. Bryant Electric Company: Bridgeport, Connecticut, United States: 1991 [12] Bryant Electric Company

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