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Author Langsdorff, W. ♦ Swozil, J.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©1972
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Physics ♦ Electricity & electronics
Subject Keyword Relays ♦ Iron ♦ Glass ♦ Springs ♦ Telephony ♦ Switching systems ♦ Control systems ♦ Cables ♦ Contact resistance ♦ Seals
Abstract Contacts in telephone switching systems are used for two basic applications, either for switching functions or control functions, having quite different requirements. So it has been found practical when new gas-protected contacts were being developed by Siemens to have two types of contacts: a highly miniaturized make contact especially for use in crosspoint relays with a lifetime expectancy of about five million operations, and a larger contact for control relays capable of carrying a greater load, and designed as a make or a make-before-break contact which is expected to carry out one order of magnitude more operations. Both contacts are hermetically sealed in metal enclosures filled with an inert gas.
Description Author affiliation :: Siemens AG, Munich, Germany
ISSN 00906778
Education Level UG and PG
Learning Resource Type Article
Publisher Date 1974-09-01
Publisher Place U.S.A.
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Volume Number 22
Issue Number 9
Size (in Bytes) 541.64 kB
Page Count 4
Starting Page 1420
Ending Page 1423

Source: IEEE Xplore Digital Library