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热词
    • 71. 发明授权
    • Box and mounting and connecting means for extremely heavy duty watt-hour meters
    • 箱体安装和连接手段,用于极度重型的手表
    • US3764858A
    • 1973-10-09
    • US3764858D
    • 1971-06-23
    • DUNCAN ELECTRIC CO INC
    • BURKHART G
    • G01R11/02G01R11/36H02B1/03H02B1/40H02B9/00
    • H02B1/03G01R11/02G01R11/36
    • A watt-hour meter has in its base the circular core of a current transformer, wound with the secondary coil, this coil being connected to the current coil of the meter driving unit. The heavy load-carrying conductors extending through this core as its primary winding are carried by the base and are in the form of oppositely facing ''''U'''' bars. A special meter box and terminal block facilitates the connecting of this combination in the circuit being measured. Alternatively it may be mounted at a different position, not in the circuit, in which case closing the cover causes the display of words indicating that it is not in service. Shiftable connection links reverse voltage connections in case the supply and load conductors are interchanged from the more usual arrangement, and also facilitate testing. The service connectors are especially suited for very heavy service conductors. Calibration is of the total self-contained meter, i.e. with current transformer as a part thereof.
    • 电度表在其基座上具有与次级线圈缠绕的电流互感器的圆心,该线圈连接到仪表驱动单元的电流线圈。 作为其初级绕组延伸通过该芯的重载承载导体由基座承载并且呈相对面对的“U”形的形式。 一个特殊的仪表盒和接线盒有助于在被测电路中连接这种组合。 或者,它可以安装在不同于电路的不同位置,在这种情况下,关闭盖会导致表示其不在使用中的字的显示。 如果供电和负载导体与更通常的布置互换,并且还便于测试,则可移动连接连接反向电压连接。 服务连接器特别适用于非常重的服务导体。 校准是指全自动计量表,即电流互感器作为其一部分。