公开(公告)号：US5170114A

公开(公告)日：1992-12-08

申请号：US757624

申请日：1991-09-11

申请人： Michael Z. Lowenstein ,  Ronald G. Jawernycky

发明人： Michael Z. Lowenstein ,  Ronald G. Jawernycky

IPC分类号： G01R23/20

CPC分类号： G01R23/20

摘要： A portable instrument for locating and measuring harmonic distortion in a conductor. The instrument permits voltage and current harmonics to be easily read while the load is changing. Thus, the instrument may provide a great deal of insight as to the source of problem causing harmonics.

摘要翻译： 用于定位和测量导体中谐波失真的便携式仪器。 该仪器允许在负载变化时轻松读取电压和电流谐波。 因此，该仪器可以提供大量的洞察导致谐波问题的根源。

公开(公告)号：US4902960A

公开(公告)日：1990-02-20

申请号：US310226

申请日：1989-02-13

申请人： Michael Z. Lowenstein ,  Ronald G. Jawernycky

发明人： Michael Z. Lowenstein ,  Ronald G. Jawernycky

IPC分类号： G01R15/14 ,  G01R23/167 ,  G01R23/20 ,  G01R29/06 ,  G01R29/26

CPC分类号： G01R23/20 ,  G01R15/142 ,  G01R23/167 ,  G01R29/06

摘要： A portable instrument for locating and measuring harmonic distortion in a conductor. The instrument permits voltage and current harmonics to be easily read while the load is changing. Thus, the instrument may provide a great deal of insight as to the source of problem causing harmonics.

摘要翻译： 用于定位和测量导体中谐波失真的便携式仪器。 该仪器允许在负载变化时轻松读取电压和电流谐波。 因此，该仪器可以提供大量的洞察导致谐波问题的根源。

公开(公告)号：US4968944A

公开(公告)日：1990-11-06

申请号：US196369

申请日：1988-05-19

申请人： Myron Zucker ,  Michael Z. Lowenstein ,  Ronald G. Jawernycky

发明人： Myron Zucker ,  Michael Z. Lowenstein ,  Ronald G. Jawernycky

IPC分类号： H02H3/04 ,  H02H3/12

CPC分类号： H02H3/04 ,  H02H3/12

摘要： Apparatus for detecting and indicating malfunctions of single electrical device in a group of electrical devices. The apparatus comprises an inductor connected to a common output of a group of electrical devices for providing an input signal corresponding to electrical energy in the group of electrical devices, a comparator connected to the inductor and receiving the input signal therefrom, the comparator functions to provide a default signal when at least one of the electrical devices malfunctions, a detector connected to the comparator for receiving the default signal therefrom, a timer connected to the comparator and the detector, the timer being actuated upon receipt of the default signal from the comparator and functioning to provide a timer signal to the detector means a predetermined time thereafter, and an indicator connected to the detector and being operated in response to an enable signal received therefrom. The detector povides the enable signal to the indicator only when it receives the default signal from the comparator simultaneously with the timer signal from the timer.

摘要翻译： 用于检测和指示一组电气设备中的单个电气设备的故障的装置。 该装置包括连接到一组电气装置的公共输出的电感器，用于提供对应于电子装置组中的电能的输入信号，连接到电感器并从其接收输入信号的比较器，比较器用于提供 当至少一个电气设备发生故障时的默认信号，连接到比较器的用于从其接收默认信号的检测器，连接到比较器和检测器的定时器，定时器在从比较器接收到默认信号时被致动， 用于向检测器装置提供定时器信号，此后的预定时间，以及连接到检测器并且响应于从其接收的使能信号而被操作的指示器。 只有当从定时器接收到来自比较器的默认信号与定时器信号同时发出时，检测器才向指示器发出使能信号。

公开(公告)号：US4818947A

公开(公告)日：1989-04-04

申请号：US169407

申请日：1988-03-17

申请人： Myron Zucker ,  Ronald G. Jawernycky ,  Michael Z. Lowenstein ,  Gerald L. Park

发明人： Myron Zucker ,  Ronald G. Jawernycky ,  Michael Z. Lowenstein ,  Gerald L. Park

IPC分类号： G01R15/14 ,  G01R23/167 ,  G01R29/26

CPC分类号： G01R15/142 ,  G01R23/167

摘要： A portable instrument for locating and measuring harmonic distortion in a conductor. The instrument permits harmonics to be easily read while the load is changing. Thus, the instrument may provide a great deal of insight as to the source of problem causing harmonics.

摘要翻译： 用于定位和测量导体中谐波失真的便携式仪器。 仪器允许在负载变化时轻松读取谐波。 因此，该仪器可以提供大量的洞察导致谐波问题的根源。

公开(公告)号：US4849849A

公开(公告)日：1989-07-18

申请号：US110115

申请日：1987-10-19

申请人： Myron Zucker ,  Ronald G. Jawernycky

发明人： Myron Zucker ,  Ronald G. Jawernycky

IPC分类号： H02H3/04 ,  H02H3/12

CPC分类号： H02H3/04 ,  H02H3/12

摘要： Apparatus for detecting malfunctions of an electrical device comprises a current transformer, connected to the electrical device a current-sensitive switch connected to the current transformer, a power supply connected to the current sensitive switch, and an indicator connected between the switch and a power supply. The switch is adapted to be switched on and prevent the indicator from being actuated by the power supply while the energy in the electrical device is greater than or equal to a predetermined level, and is adapted to be switched off and permit the indicator to be actuated by the power supply while the energy in the electrical device is less than the predetermined level.

摘要翻译： 用于检测电气设备故障的装置包括电流互感器，连接到电气设备，连接到电流互感器的电流敏感开关，连接到电流敏感开关的电源以及连接在开关和电源之间的指示器 。 开关适于被接通，并且防止指示器被电源驱动，同时电气设备中的能量大于或等于预定水平，并且适于关闭并允许指示器被致动 通过电源，同时电气设备中的能量小于预定水平。