Current Sensing Apparatus
    1.
    发明申请
    Current Sensing Apparatus 审中-公开
    电流传感器

    公开(公告)号:US20120194172A1

    公开(公告)日:2012-08-02

    申请号:US13354845

    申请日:2012-01-20

    IPC分类号: G01R1/20

    CPC分类号: G01R19/0092 G01R15/08

    摘要: A current sensing device (50) having a plurality of discrete, repeatable, user-selectable setpoint values. Current sensing circuitry (32) of the device includes a multi-position switch (34) operative to alternatively connect discrete impedances (e.g. resistors R1, R2, R3, or R4) into the circuit in order to change the setpoint value. A calibration scale (42) associated with a user-input knob (44) of the multi-position switch may be marked with values of horsepower which correspond to the size of a motor that has a motor nameplate rating equivalent to the sensed current setpoint associated with each switch position. A second switch (52) may be provided to allow the user to select an offset for the setpoint value.

    摘要翻译: 一种具有多个离散的,可重复的用户可选择的设定值的电流感测装置(50)。 该装置的电流检测电路(32)包括多位置开关(34),可操作以将离散阻抗(例如电阻器R1,R2,R3或R4)交替连接到电路中,以便改变设定值。 与多位置开关的用户输入旋钮(44)相关联的校准刻度(42)可以标记有马力的值,其对应于具有等于感测的当前设定点相关联的电动机铭牌额定值的电动机的尺寸 与每个开关位置。 可以提供第二开关(52)以允许用户选择设定值的偏移。