公开(公告)号：US10203356B2

公开(公告)日：2019-02-12

申请号：US15256190

申请日：2016-09-02

申请人： Fluke Corporation

发明人： Fang Li ,  Wei Huang ,  Shounan Luo

IPC分类号： G01R15/18 ,  G01R1/22 ,  G01R19/00 ,  G01R1/067

摘要： A portable measurement device includes an elongated body, a stationary portion fixedly mounted to a distal end, and a movable jaw movably mounted to the distal end and movable between a closed position and an open position. In the closed position, the movable jaw and the stationary portion form a closed loop with an inner diameter of less than or equal to 10 mm. Alternatively, at least one of the movable jaw and the stationary portion has a cross-sectional diameter of less than or equal to 5 mm. In the open position, the movable jaw and the stationary portion define a gap allowing a wire under test to pass therethrough into the loop. A switch drives the movable jaw between the closed and open positions. A measurement circuit electrically coupled to the stationary portion and the movable jaw to receive and measure a sensing current generated by the closed loop.

公开(公告)号：US20170102411A1

公开(公告)日：2017-04-13

申请号：US15291973

申请日：2016-10-12

申请人： Fluke Corporation

发明人： Fang Li ,  Jinbo He ,  Chris Lagerberg

IPC分类号： G01R1/22

CPC分类号： G01R1/22

摘要： A clamp meter includes a meter body and a clamp jaw assembly mounted to the meter body. The clamp jaw assembly includes a first clamp jaw and a second clamp jaw which are movable in relation to each other between a closed position and an open position. In the closed position, distal ends of the first and second clamp jaws meet to define an enclosed area between the first and second clamp jaws, and in the open position, the distal ends of the first and second clamp jaws are separate from each other to define a gap allowing a wire under test to pass therethrough. The clamp meter further includes a locking member mounted within the meter body. The locking member is operable to releasably lock the first and second clamp jaws in the closed position.

公开(公告)号：US20210265110A1

公开(公告)日：2021-08-26

申请号：US17257482

申请日：2019-06-28

申请人： Fluke Corporation

发明人： Shounan Luo ,  Fang Li

IPC分类号： H01F38/30 ,  H01F27/28 ,  H01F27/24 ,  H01F27/36

摘要： A current transformer includes first and second transformer assemblies that each respectively comprise first and second groups of stacked iron core components. A first interface and a second interface are defined at an end of the first transformer assembly. A third interface and a fourth interface are defined at an end of the second transformer assembly. At least one of the first interface and the second interface is detachably connected with at least one of the third interface and the fourth interface. When the first and second transformer assemblies are connected with each other, the first and second groups of iron core components are combined to form a plurality of closed ring-shaped iron cores, and coils are respectively wound on at least two closed ring-shaped iron cores. An enclosed area defined between the first and second transformer assemblies causes induced current to be generated in at least one coil.

公开(公告)号：US10557869B2

公开(公告)日：2020-02-11

申请号：US16173986

申请日：2018-10-29

申请人： Fluke Corporation

发明人： Fang Li ,  Jinbo He ,  Chris Lagerberg

IPC分类号： G01R1/04 ,  G01R1/20 ,  G01R1/22 ,  G01R1/38 ,  G01R19/00 ,  G01R15/18 ,  G01R21/00 ,  G01R31/02 ,  G01R31/36

摘要： A clamp meter includes a meter body and a clamp jaw assembly mounted to the meter body. The clamp jaw assembly includes a first clamp jaw and a second clamp jaw that are movable in relation to each other between a closed position and an open position. In the closed position, distal ends of the first and second clamp jaws meet to define an enclosed area between the first and second clamp jaws, and in the open position, the distal ends of the first and second clamp jaws separate from each other to define a gap allowing a wire under test to pass therethrough. The clamp meter further includes a locking slider positioned within a slot inside the meter body. A switch assembly moves the locking slider longitudinally within the slot between locked and unlocked positions. In the locked position, the locking slider blocks the first clamp jaw from movement.

公开(公告)号：US10114043B2

公开(公告)日：2018-10-30

申请号：US15291973

申请日：2016-10-12

申请人： Fluke Corporation

发明人： Fang Li ,  Jinbo He ,  Chris Lagerberg

IPC分类号： G01R1/04 ,  G01R1/20 ,  G01R1/22 ,  G01R1/38 ,  G01R19/14 ,  G01R15/18 ,  G01R15/20 ,  G01R21/00 ,  G01R31/02 ,  G01R31/36

摘要： A clamp meter includes a meter body and a clamp jaw assembly mounted to the meter body. The clamp jaw assembly includes a first clamp jaw and a second clamp jaw which are movable in relation to each other between a closed position and an open position. In the closed position, distal ends of the first and second clamp jaws meet to define an enclosed area between the first and second clamp jaws, and in the open position, the distal ends of the first and second clamp jaws are separate from each other to define a gap allowing a wire under test to pass therethrough. The clamp meter further includes a locking member mounted within the meter body. The locking member is operable to releasably lock the first and second clamp jaws in the closed position.

公开(公告)号：US20190064221A1

公开(公告)日：2019-02-28

申请号：US16173986

申请日：2018-10-29

申请人： Fluke Corporation

发明人： Fang Li ,  Jinbo He ,  Chris Lagerberg

IPC分类号： G01R1/22

CPC分类号： G01R1/22

摘要： A clamp meter includes a meter body and a clamp jaw assembly mounted to the meter body. The clamp jaw assembly includes a first clamp jaw and a second clamp jaw that are movable in relation to each other between a closed position and an open position. In the closed position, distal ends of the first and second clamp jaws meet to define an enclosed area between the first and second clamp jaws, and in the open position, the distal ends of the first and second clamp jaws separate from each other to define a gap allowing a wire under test to pass therethrough. The clamp meter further includes a locking slider positioned within a slot inside the meter body. A switch assembly moves the locking slider longitudinally within the slot between locked and unlocked positions. In the locked position, the locking slider blocks the first clamp jaw from movement.

公开(公告)号：US20170059626A1

公开(公告)日：2017-03-02

申请号：US15256190

申请日：2016-09-02

申请人： Fluke Corporation

发明人： Fang Li ,  Wei Huang ,  Shounan Luo

IPC分类号： G01R15/18 ,  G01R19/00

CPC分类号： G01R15/181 ,  G01R1/06788 ,  G01R1/22 ,  G01R15/186 ,  G01R19/0092

摘要： A portable measurement device includes an elongated body, a stationary portion fixedly mounted to a distal end, and a movable jaw movably mounted to the distal end and movable between a closed position and an open position. In the closed position, the movable jaw and the stationary portion form a closed loop with an inner diameter of less than or equal to 10 mm. Alternatively, at least one of the movable jaw and the stationary portion has a cross-sectional diameter of less than or equal to 5 mm. In the open position, the movable jaw and the stationary portion define a gap allowing a wire under test to pass therethrough into the loop. A switch drives the movable jaw between the closed and open positions. A measurement circuit electrically coupled to the stationary portion and the movable jaw to receive and measure a sensing current generated by the closed loop.

摘要翻译： 便携式测量装置包括细长主体，固定地安装到远端的固定部分，以及可移动的夹爪，其可移​​动地安装到远端并且能够在关闭位置和打开位置之间移动。 在关闭位置，活动夹爪和固定部分形成内径小于或等于10mm的闭环。 或者，可动夹爪和固定部分中的至少一个具有小于或等于5mm的横截面直径。 在打开位置，活动夹爪和固定部分限定了允许被测试线穿过其中的间隙。 开关驱动可动夹爪在关闭位置和打开位置之间。 电耦合到固定部分和可动钳口的测量电路，以接收和测量由闭环产生的感测电流。