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专利名称：Arrangement for detecting a deficient
operational capability of a vacuum switchingvessel
发明人：Kurt Muller,Hans-Jurgen Lendt,Manfred
Rimmrott
申请号：US05/5377申请日：19750402公开号：US040342A公开日：19770705
摘要：The invention is directed to an arrangement for detecting deficient operationalcapability in a vacuum switching vessel. The arrangement can provide a signal if a faultoccurs which affects the operability of the switching vessel. Instead of a signal, aprotective device alone or together with the signal can also be caused to respond. Thearrangement includes a body of a material which changes its physical characteristicssubstantially in a limited temperature interval and is attached in heat- conducting contactwith a part of the vacuum switching vessel which has a temperature time constant assmall as possible. This change of the characteristics of the body acts to initiate the above-mentioned signal or action of the protective device. The invention is suited particularlyfor application in switchgear with vacuum switching vessels.
申请人：SIEMENS AKTIENGESELLSCHAFT
代理机构：Kenyon & Kenyon, Reilly, Carr & Chapin
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