公开(公告)号：US10746767B2

公开(公告)日：2020-08-18

申请号：US15975187

申请日：2018-05-09

申请人： Fluke Corporation

发明人： Jeffrey Worones ,  Ronald Steuer ,  Ricardo Rodriguez

IPC分类号： G01R19/25 ,  G01R15/14 ,  G01R15/18 ,  G01R15/20 ,  H01F27/28

摘要： Systems and methods are provided for measuring electrical parameters in an insulated conductor without requiring a galvanic connection. A non-contact, electrical parameter sensor probe may be operative to measure both current and voltage in an insulated conductor. The sensor probe includes a body, a Rogowski coil coupled to the body, and a non-contact voltage sensor coupled to the body or the Rogowski coil. The size of the loop of the Rogowski coil is selectively adjustable, such that the loop may be tightened around the conductor under test until the conductor is positioned adjacent a portion of the body or Rogowski coil that includes the non-contact voltage sensor. Measured electrical parameters may be provided to a user, e.g., via a display, or may be transmitted to one or more external systems via a suitable wired or wireless connection.

公开(公告)号：US10605832B2

公开(公告)日：2020-03-31

申请号：US15695998

申请日：2017-09-05

申请人： Fluke Corporation

发明人： David L. Epperson ,  Ronald Steuer ,  Jeffrey Worones ,  Patrick Scott Hunter ,  Ricardo Rodriguez

IPC分类号： G01R15/16 ,  G01R19/28 ,  G01R19/165 ,  G01R15/20 ,  G01R1/22 ,  G01R15/14 ,  G01R19/00

摘要： Systems and methods for measuring alternating current (AC) voltage of an insulated conductor are provided, without requiring a galvanic connection between the conductor and a test electrode. A non-galvanic contact voltage measurement device includes a conductive sensor, an internal ground guard, and a reference shield. A reference voltage source is electrically coupleable between the guard and the reference shield to generate an AC reference voltage which causes a reference current to pass through the conductive sensor. Sensor subsystems may be arranged in layers (e.g., stacked layers, nested layers, or components) of conductors and insulators. The sensor subsystems may be packaged as formed sheets, flexible circuits, integrated circuit (IC) chips, nested components, printed circuit boards (PCBs), etc. The sensor subsystems may be electrically coupled to suitable processing or control circuitry of a non-contact voltage measurement device to allow for measurement of voltages in insulated conductors.

公开(公告)号：US20180136257A1

公开(公告)日：2018-05-17

申请号：US15625745

申请日：2017-06-16

申请人： Fluke Corporation

发明人： Ronald Steuer ,  Peter Radda ,  Ricardo Rodriguez ,  David L. Epperson ,  Patrick Scott Hunter ,  Paul Andrew Ringsrud ,  Clark N. Huber ,  Christian Karl Schmitzer ,  Jeffrey Worones ,  Michael F. Gallavan

IPC分类号： G01R15/12 ,  G01R15/20 ,  G01R15/16 ,  G01R19/25

CPC分类号： G01R15/125 ,  G01R1/22 ,  G01R15/14 ,  G01R15/16 ,  G01R15/207 ,  G01R19/00 ,  G01R19/25

摘要： Systems and methods provide measurement of alternating current (AC) electrical parameters in an insulated wire without requiring a galvanic connection between the insulated wire and a test probe. Measurement systems or instruments may include a housing that includes both a non-contact voltage sensor and a non-contact current sensor. The measurement system obtains measurements from the voltage sensor and the current sensor during a measurement time interval and processes the measurements to determine AC electrical parameters of the insulated wire. The AC electrical parameters may be presented to an operator via a visual indicator device (e.g., display, lights). The AC electrical parameters may additionally or alternatively be communicated to an external device via a wired and/or wireless communications interface. The measurement system may include an alignment feedback sensor that provides feedback to a user regarding the mechanical alignment of the insulated wire relative to the voltage sensor and the current sensor.