公开(公告)号：WO2022069971A1

公开(公告)日：2022-04-07

申请号：PCT/IB2021/058078

申请日：2021-09-03

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： GRAVERMANN, Mark ,  STOLLWERCK, Gunther A. J. ,  WILSON, Christopher R. ,  REEKEN, Rainer ,  MILEK, Martin A. ,  GUNJACA, Mirco ,  BUND, Christine B.

IPC: G01R15/06 ,  G01R15/16 ,  G01R19/00 ,  H02G15/18 ,  H01R13/53 ,  H02G15/06

Abstract: A sensored insulation plug for a medium-voltage or high-voltage separable connector in a power distribution network of a national grid, and operable to insulate a connection element of the separable connector on elevated voltage and to sense the elevated voltage. The sensored insulation plug has an outer shape generally symmetrical about a plug axis defining axial directions and radial directions, and comprises a plug body formed by an insulating material, and a primary capacitor, operable as a high-voltage capacitor in a voltage divider for sensing the elevated voltage. The primary capacitor has a high-voltage electrode for direct electrical connection to the elevated voltage, a sensing electrode of a tubular shape, embedded in the plug body, arranged around the high-voltage electrode and extending, in axial directions, between a first axial edge position (B) and a second axial edge position (A), and a dielectric formed by a portion of the insulating material arranged between at least a portion of the sensing electrode and at least a portion of the high-voltage electrode. A shield electrode of generally tubular shape, embedded in the plug body, is arranged around the sensing electrode and extending in axial directions at least between the first axial edge (B) position and the second axial edge position (A), and comprises a protruding portion extending in axial direction beyond the first axial edge position (B), such as to enhance electrical shielding, by the shield electrode, of the sensing electrode against external electrical fields.

公开(公告)号：WO2022254265A1

公开(公告)日：2022-12-08

申请号：PCT/IB2022/054400

申请日：2022-05-11

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： GRAVERMANN, Mark ,  STOLLWERCK, Gunther A. J. ,  WILSON, Christopher R. ,  REEKEN, Rainer ,  MILEK, Martin A. ,  BUND, Christine B. ,  GUNJACA, Mirco

IPC: G01R15/06 ,  G01R15/16 ,  G01R19/155 ,  H01R13/53 ,  H01R13/66

Abstract: Sensored insulation plug for a medium voltage or high-voltage separable connector in a national grid, and operable to insulate a connection element of the separable connector on an elevated voltage and to simultaneously detect and sense the elevated voltage. The sensored insulation plug comprises a) a plug body formed by a solidified insulating material, b) an externally accessible detection contact, c) a primary capacitor, operable as a high-voltage capacitor in a sensing voltage divider for sensing the elevated voltage, the primary capacitor having i) a high-voltage electrode; ii) a sensing electrode embedded in the plug body; iii) a dielectric formed by a first portion of the insulating material, and d) a testpoint capacitor, operable as a high-voltage capacitor in a detection voltage divider for detecting the elevated voltage and comprising i) the high-voltage electrode, ii) a testpoint electrode, embedded in the plug body and electrically connected to the detection contact, and iii) a dielectric formed by a second portion of the insulating material.

公开(公告)号：WO2021113278A1

公开(公告)日：2021-06-10

申请号：PCT/US2020/062773

申请日：2020-12-02

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： KÜHNEWEG, Bernd ,  SCHNUSENBERG, Juergen ,  GUNJACA, Mirco ,  KUESTERS, Christoph ,  ROSEN, Kerstin C. ,  MIDDENDORF, Claus H. G. ,  HUANG, Mitchell T. ,  STANKES, David S. ,  DE ROVERE, Anne N.

IPC: H01M10/625 ,  H01M10/658 ,  H01M50/24 ,  H01M50/124 ,  B60L50/64

Abstract: A three dimensional flame barrier is described herein. The three dimensional flame barrier comprises a flame resistant material, wherein the flame resistant barrier has a complex geometry that is defined by a height, width and length, wherein the height of the complex geometry is substantially greater than the thickness of the flame resistant material from which it is formed wherein the flame resistant material comprises inorganic fibers, inorganic particles and an inorganic binder. In some embodiments, the flame barrier article can further comprise a fire protection coating disposed on a first major surface of the flame barrier material.

公开(公告)号：WO2022106937A1

公开(公告)日：2022-05-27

申请号：PCT/IB2021/059899

申请日：2021-10-26

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： GRAVERMANN, Mark ,  STOLLWERCK, Gunther A. J. ,  BUND, Christine B. ,  REEKEN, Rainer ,  MILEK, Martin A. ,  GUNJACA, Mirco

IPC: G01R15/06 ,  G01R15/16 ,  H01B17/28

Abstract: Sensored insulation plug (1) for being inserted into a separable connector in a power distribution network comprises a plug body (140) formed by a solidified insulating material (610), and a primary capacitor (150), operable as a high-voltage capacitor in a voltage divider for sensing the elevated voltage. The primary capacitor includes a high-voltage electrode (160) for direct electrical connection to the elevated voltage. A sensing electrode (170) of a tubular shape, embedded in the plug body (140), arranged around the high-voltage electrode, comprises a deformable mesh of conductive wires forming a plurality of apertures between the wires to allow portions of the insulating material (610) on opposite sides of the mesh to be mechanically connected with each other by insulating material in the apertures while the insulating material solidifies and thereafter. A dielectric formed by a portion (180) of the insulating material (610) is arranged between the sensing electrode (170) and the high-voltage electrode (160).

公开(公告)号：WO2021059078A1

公开(公告)日：2021-04-01

申请号：PCT/IB2020/058532

申请日：2020-09-14

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： STOLLWERCK, Gunther A.J. ,  GRAVERMANN, Mark ,  SCHUBERT, Bernd ,  BUND, Christine B. ,  GUNJACA, Mirco ,  WEICHOLD, Jens ,  FINK, Johannes ,  STALDER, Michael H. ,  EGGERT-RICHTER, Sebastian ,  WESTKAMP, Harald ,  AHLMANN, Willy A. ,  ZILLIGEN, Guenter M.

IPC: G01R15/04 ,  G01R15/16

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.