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2. 发明授权

US3846641A Control system for a plurality of loads 失效
标题翻译：多种负载的控制系统
公开(公告)号：US3846641A
公开(公告)日：1974-11-05
申请号：US39612573
申请日：1973-09-10
申请人： HOCHIKI CO
发明人： EGUCHI Y
IPC分类号： E05F17/00 , A62C2/24 , E05B47/00 , G05B19/02 , G05B19/07 , H03K17/292 , H02J3/14
CPC分类号： G05B19/07 , H03K17/292 , Y10T307/484
摘要： In a control system wherein a plurality of loads are sequentially connected in parallel across supply conductors, each load is connected across the supply conductors through a switching circuit which is closed a predetermined interval after the application of an operating voltage, the loads in the second and succeeding stages are connected across the supply conductors through transfer switches which are operated in response to the operation of the loads in the preceding stages, a relay contact is connected in parallel with each transfer switch, and relay means is provided for each stage for opening the contact when the load and the switching circuit in that stage are energized, and for closing the contact after a predetermining interval. For the purpose of performing a conduction test of the whole system, the supply conductors are terminated with an impedance element, and a test voltage lower than the operating voltage is connected to the supply conductors at the time of the conduction test.
摘要翻译：在其中多个负载在供电导体上并联顺序连接的控制系统中，每个负载通过开关电路连接在供电导体之间，开关电路在施加工作电压之后以预定的间隔闭合，负载在第二和后续阶段通过转换开关连接在供电导体上，转换开关响应于前一级中的负载的操作而操作，继电器触点与每个转换开关并联连接，并且为每个级设置继电器装置，用于打开当该级的负载和开关电路通电时，以及在预定间隔之后闭合触点的情况下的接触。为了进行整个系统的导通测试，供电导体用阻抗元件端接，并且在导通测试时将低于工作电压的测试电压连接到供电导体。

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