公开(公告)号：US12130308B2

公开(公告)日：2024-10-29

申请号：US17753328

申请日：2020-09-14

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Guenther A. J. Stollwerck ,  Mark Gravermann ,  Bernd Schubert ,  Christine B. Bund ,  Mirco Gunjaca ,  Jens Weichold ,  Johannes Fink ,  Michael H. Stalder ,  Sebastian Eggert-Richter ,  Harald Westkamp ,  Willy A. Ahlmann ,  Guenter M. Zilligen

IPC: G01R15/16 ,  G01R15/04 ,  G01R19/00

CPC classification number: G01R15/16 ,  G01R15/04 ,  G01R19/0084

Abstract: Voltage sensor (1) comprising a voltage divider (40) for sensing an AC voltage of a HV/MV power conductor (10). For adjusting the common overall impedance of the low-voltage portion of the voltage divider towards a desired impedance, the low-voltage portion (60) comprises one or more low-voltage impedance elements (110), a plurality of adjustment impedance elements (80) and a plurality of switches. In its connect state, each switch electrically connects an adjustment impedance element in parallel to at least one of the one or more low-voltage impedance elements (110). The overall impedance of the high-voltage portion (50) and the overall impedance of the low-voltage portion (60) of the voltage divider (40) are adapted such that, by bringing one or more of the switches (90) into their connect state, the voltage divider (40) has, for an AC voltage of between 5 and 25 kV phase-to-ground and a frequency of between 40 and 70 Hertz, a dividing ratio of 3077, of 6154, of 6769 or of 10 000.

公开(公告)号：US12066464B2

公开(公告)日：2024-08-20

申请号：US17937847

申请日：2022-10-04

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Gunther A. J. Stollwerck ,  Mark Gravermann

IPC: G01R15/06 ,  G01R15/16 ,  H01B17/56

CPC classification number: G01R15/16 ,  H01B17/56

Abstract: A sensored insulation plug for a separable connector in a MV/HV power distribution network of a national grid, operable to sense the MV/HV elevated voltage. The sensored insulation plug includes a plug body formed by a solidified insulating material, a contact piece, and a discrete coupling capacitor embedded in the insulating material and operable to harvest energy from the elevated voltage of the contact piece and optionally operable to superimpose a communication voltage signal over the elevated voltage. The sensored insulation plug further includes an integrated sensing capacitor, operable as a high-voltage capacitor in a sensing voltage divider for sensing the elevated voltage. The sensing capacitor comprises a high-voltage electrode comprising the coupling electrode and the contact piece, a tubular sensing electrode, and a dielectric comprising a portion of the insulating material.

公开(公告)号：US11683880B2

公开(公告)日：2023-06-20

申请号：US17250905

申请日：2019-10-16

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Gunther A. J. Stollwerck ,  Mark Gravermann ,  Jens Weichold ,  Sebastian Eggert-Richter ,  Michael H. Stalder

IPC: H05K1/02 ,  G01R1/18 ,  G01R15/16 ,  H05K1/11 ,  H05K5/06 ,  H05K9/00 ,  H05K1/18

CPC classification number: H05K1/0254 ,  G01R1/18 ,  G01R15/16 ,  H05K1/111 ,  H05K5/065 ,  H05K9/0007 ,  H05K1/181 ,  H05K2201/09163 ,  H05K2201/10015

Abstract: Encapsulated PCB assembly (1) for electrical connection to a high- or medium-voltage power conductor in a power distribution network of a national grid, comprising a) a PCB (10), delimited by a peripheral edge (20) and comprising a high-tension pad (60, 62) on a voltage of at least one kilovolt, b) an electrically insulating encapsulation body (70) in surface contact with, and enveloping, the high-tension pad and at least a portion of the PCB edge adjacent to the high-tension pad, c) a shielding layer (80) on an external surface (90) of the encapsulation body and for being held on electrical ground or on a low voltage to shield at least a low-voltage portion of the PCB. The high-tension pad extends to the peripheral edge of the PCB.

公开(公告)号：US11099215B2

公开(公告)日：2021-08-24

申请号：US16646428

申请日：2018-09-28

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Harald Westkamp ,  Bernd Schubert ,  Mark Gravermann ,  Jens Weichold

IPC: G01R15/06 ,  G01R1/20 ,  G01R15/16 ,  G01R15/18 ,  H01R13/66

Abstract: The invention relates to a sensor (3) for measuring a voltage in a HV/MV power network in a separable connector (2), the sensor comprising: —an adapter element (11) comprising a high voltage connection adapted to be mechanically and electrically coupled to a high voltage conductor (7) of the separable connector (2) and to receive HV/MV voltage from the separable connector, —a sensor body (12) adapted to be mechanically and electrically coupled to the adapter element (11) and comprising a divider assembly (24) with a plurality of discrete impedance elements, which are electrically connected in series such as to be operable as a voltage divider for sensing a voltage and a low voltage connection (42) configured to provide a low voltage signal corresponding to a high voltage signal present in the HV/MV power network, wherein the adapter element (11) and the sensor body (12) are separate elements that are adapted to be installed to the separable connector (2), wherein the adapter element is configured to be installed between the separable connector and the sensor body.

公开(公告)号：US20200174042A1

公开(公告)日：2020-06-04

申请号：US16620665

申请日：2018-06-13

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Michael H. Stalder ,  Sebastian Eggert-Richter ,  Rainer Fangrat ,  Mark Gravermann ,  Jens Weichold ,  Gunther A.J. Stollwerck ,  Bernd Schubert ,  Hermanus Franciscus Maria Van Meijl ,  Andreea Sabo

IPC: G01R15/06 ,  H05K1/18

Abstract: Impedance assembly (2) for use in a voltage divider for sensing an AC voltage of at least 1 kV versus ground of a power-carrying conductor distributing electrical energy in a grid. The impedance assembly comprises a) a printed circuit board (131) comprising one or more dielectric board layers (210, 215, 220), b) an externally accessible high-voltage contact (100), c) an externally accessible low-voltage contact (110), spaced from the high-voltage contact by at least 30 mm, and d) at least two dividing capacitors (91), connected in series between the high-voltage contact and the low-voltage contact and operable as a high-voltage side of the voltage divider. Each dividing capacitor has two electrodes formed by conductive areas (301, 302, 303, 304, 305, 306), arranged on opposed surface portions of a specific dielectric board layer, and a dielectric comprising a portion of the specific dielectric board layer on which the electrodes are arranged. Instead of the dividing capacitors, the impedance assembly may comprise a resistor layer.

公开(公告)号：US20190086444A1

公开(公告)日：2019-03-21

申请号：US16087768

申请日：2016-12-23

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Mark Gravermann ,  Gunther A.J. Stollwerck ,  Michael H. Stalder ,  Gerhard Lohmeier ,  Bernd Schubert ,  Rainer Reeken ,  Jens Weichold

IPC: G01R15/06 ,  G01R19/00 ,  H02G15/18 ,  H05K1/18

Abstract: Elastic sleeve (1) for electrically insulating a HV/MV power conductor in a power network, comprising a) a shrinkable or expandable elastic sleeve body (10); b) a receiving space (20) in the sleeve body, for receiving the power conductor; c) a cavity (30) formed in the sleeve body; and d) a divider assembly (40), arranged, at least partially, in the cavity and comprising a plurality of discrete impedance elements, operable as a voltage divider for sensing a voltage of an inner conductor of the power conductor.

公开(公告)号：US09960530B2

公开(公告)日：2018-05-01

申请号：US15247491

申请日：2016-08-25

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Giuliano Bolcato ,  Jens Weichold ,  Pasquale Zanoli ,  Mark Gravermann ,  Michael H. Stalder ,  Holger J. Kurzhals ,  Sebastian Eggert ,  Christian Weinmann

IPC: H02G15/04 ,  H01R13/58 ,  H02G15/184 ,  G01R15/14 ,  G01R15/06 ,  G01R15/16 ,  G01R19/00 ,  H01B9/00 ,  H01R13/66 ,  H01R43/26 ,  H02G15/064 ,  G01R15/18

CPC classification number: H01R13/5845 ,  G01R15/06 ,  G01R15/142 ,  G01R15/16 ,  G01R15/181 ,  G01R19/0084 ,  H01B9/006 ,  H01R13/6683 ,  H01R43/26 ,  H02G15/064 ,  H02G15/184 ,  Y10T29/49208

Abstract: A terminal connection device for connecting an end of a medium- or high-voltage power cable to a connection point comprises a) an interface cable having first and second end portions, comprising an inner conductor and a conductive or semiconductive layer; b) a first stress control tube comprising a stress control element, and an insulating layer arranged around the stress control element, wherein the first stress control tube is mounted on the first end portion of the interface cable; c) a first cable connector for connecting the interface cable to the power cable, the first cable connector being connected to the second end portion of the interface cable; and d) one or more tubular shrinkable sleeves, at least a portion of one of the tubular shrinkable sleeves extending over at least a portion of the first stress control tube wherein the portion of the tubular shrinkable sleeve extending over at least a portion of the first stress control tube is shrunk down around at least a portion of the first stress control tube.

公开(公告)号：US09742180B2

公开(公告)日：2017-08-22

申请号：US14898512

申请日：2014-06-19

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Carl J. Wentzel ,  Christopher D. Sebesta ,  Jaylon D. Loyd ,  David V. Mahoney ,  Michael D. Benson ,  Levent Biyikli ,  Jens Weichold ,  Mark Gravermann ,  Giuliano Bolcato

IPC: H02G15/02 ,  H02G1/14 ,  H02G15/068 ,  H01B9/00

CPC classification number: H02G15/02 ,  H01B9/006 ,  H02G1/14 ,  H02G15/068

Abstract: A terminal connection device comprises a contiguous body disposed onto an inner conductor. The inner conductor includes a first end mateable with a power cable connector and a second end. The body comprises a multilayer structure having an inner conductive or semiconductive layer disposed over at least a portion of the power cable connector, an insulating layer and an outer conductive or semiconductive layer. The body surrounds the first end of the inner conductor and extending towards the second end of the inner conductor. The body can also include an electrically isolated section of conductive or semiconductive material. The terminal connection device can be a fully integrated structure, having a pre-installed connection interface, or the terminal connection device can be configured as an adapter which can be mounted in the field to a connection interface.

公开(公告)号：US09739805B2

公开(公告)日：2017-08-22

申请号：US14897688

申请日：2014-06-19

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Mark Gravermann ,  Friedrich A. Busemann ,  Gerhard Lohmeier ,  Jens Weichold ,  Bernd Schubert ,  Michael H. Stalder ,  Pasquale Zanoli ,  Giuliano Bolcato

IPC: G01R15/16 ,  G01R19/00 ,  G01R27/26 ,  G01R31/02 ,  H01B7/02 ,  H01B9/00 ,  G01R31/12

CPC classification number: G01R15/16 ,  G01R19/0084 ,  G01R27/26 ,  G01R27/2605 ,  G01R31/021 ,  G01R31/1272 ,  H01B7/02 ,  H01B9/006

Abstract: A conductor assembly for a power network includes an inner conductor defining radial and axial directions, an insulating layer arranged around at least an axial section of the inner conductor, and a sensing electrode arranged radially outward of the insulating layer. The sensing electrode is operable as a first electrode of a sensing capacitor of a capacitive voltage sensor, in which sensing capacitor the inner conductor is operable as a second electrode. The conductor assembly further includes an electrically insulating spacer element arranged radially between the insulating layer and the sensing electrode.

公开(公告)号：US09739804B2

公开(公告)日：2017-08-22

申请号：US14890652

申请日：2014-05-08

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Friedrich A. Busemann ,  Gerhard Lohmeier ,  Mark Gravermann

IPC: G01R15/16 ,  G01R19/00 ,  H02G15/113 ,  H01F38/30

CPC classification number: G01R15/16 ,  G01R19/0084 ,  H01F38/30 ,  H02G15/113

Abstract: Closure (1) for receiving a section of a conductor assembly (71), comprising a housing (25) closable around the conductor assembly (71), and an electrode assembly (200), which comprises a movable portion comprising a contact surface (150) for mechanically contacting the conductor assembly (71), and a sensing electrode (140), operable as a first capacitor electrode of a sensing capacitor for sensing a voltage of the conductor (80). The closure further comprises urging means (160) for urging the movable portion of the electrode assembly (200) towards the conductor assembly (71) for establishing a mechanical surface contact between the contact surface (150) and the conductor assembly (71), when the housing (25) is closed around the conductor assembly (71).