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1. 发明公开

EP3978936A1 SENSORED INSULATION PLUG 审中-实审
公开(公告)号：EP3978936A1
公开(公告)日：2022-04-06
申请号：EP20199577.6
申请日：2020-10-01
申请人： 3M Innovative Properties Company
发明人： Gravermann, Mark , Stollwerck, Gunther , Wilson, Christopher R. , Reeken, Rainer , Milek, Martin Andreas , Gunjaca, Mirco , Bund, Christine Brigitte
IPC分类号： G01R15/06 , G01R15/16 , G01R19/00 , H02G15/18
摘要： Sensored insulation plug (1) 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 having an outer shape generally symmetrical about a plug axis (100) defining axial directions (110) and radial directions (120), and comprising
a) a plug body (140) formed by an insulating material, and
b) a primary capacitor (150), operable as a high-voltage capacitor in a voltage divider for sensing the elevated voltage, the primary capacitor having
i) a high-voltage electrode (160) for direct electrical connection to the elevated voltage;
ii) a sensing electrode (170) of a tubular shape, embedded in the plug body (140), 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);
iii) a dielectric formed by a portion (180) of the insulating material arranged between at least a portion of the sensing electrode (170) and at least a portion of the high-voltage electrode (160).
The sensored insulation plug is characterized by further comprising

c) a shield electrode (440) of generally tubular shape, embedded in the plug body (140), arranged around the sensing electrode (170) and extending in axial directions (110) at least between the first axial edge (B) position and the second axial edge position (A), comprising a protruding portion (470) extending in axial direction (110) 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.

2. 发明公开

EP3796006A1 ADJUSTABLE VOLTAGE SENSOR 审中-公开
公开(公告)号：EP3796006A1
公开(公告)日：2021-03-24
申请号：EP19198862.5
申请日：2019-09-23
申请人： 3M Innovative Properties Company
发明人： Stollwerck, Gunther , Gravermann, Mark , Schubert, Bernd , Bund, Christine Brigitte , Gunjaca, Mirco , Weichold, Jens , Fink, Johannes , Stalder, Michael , Eggert-Richter, Sebastian , Westkamp, Harald , Ahlmann, Willy Alexander , Zilligen, Guenter Matthias
IPC分类号： G01R15/04 , G01R15/16
摘要： 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).

3. 发明公开

EP4304029A1 INSULATION PLUG AND INSATLLING PROCESS THEREOF 审中-公开
公开(公告)号：EP4304029A1
公开(公告)日：2024-01-10
申请号：EP22183692.7
申请日：2022-07-07
申请人： 3M Innovative Properties Company
发明人： Gravermann, Mark , Stollwerck, Dr. Gunther , Milek, Martin Andreas , Reeken, Rainer , Bund, Christine Brigitte , Gunjaca, Mirco , Wilson, Christopher R. , Pesch, Marc Christian
IPC分类号： H02G3/00 , H02B13/00 , H02G15/18 , F16B31/00 , F16B35/00 , B25B29/02 , H01R13/207 , H01R13/443 , H01R13/53 , H01R11/28 , H01R101/00 , F16B21/02 , F16B37/12 , H01R13/622
摘要： Insulation plug (1) for being inserted into a rear cavity (70) of a medium-voltage or high-voltage separable connector (10) for connecting a power cable to a bushing (40) in a power distribution network. In use, the insulation plug insulates a threaded connection stud (90) for attaching the separable connector (10) to the bushing (40).
The insulation plug (1) comprises
a) a plug body (140)
b) a thread block (170), affixed in the plug body (140), and comprising an internal plug thread (180) for securing the insulation plug (1) in the rear cavity (70);
c) a tubular sleeve (200) comprising i) a radially outer surface comprising an outer sleeve thread (210); ii) a radially inner surface comprising an inner sleeve thread (220).
The inner sleeve thread (220) is adapted to threadedly engage with the connection stud (90). The outer sleeve thread (210) is threadedly engaged with the plug thread (180), and a portion (230) of the inner sleeve thread (220) protrudes axially from the plug thread (180), such that upon insertion the protruding portion (230) can threadedly engage the connection stud (90).

4. 发明公开

EP4099024A1 SENSORED INSULATION PLUG WITH DETECTION CONTACT 审中-实审
公开(公告)号：EP4099024A1
公开(公告)日：2022-12-07
申请号：EP21177683.6
申请日：2021-06-04
申请人： 3M Innovative Properties Company
发明人： Gravermann, Mark , Stollwerck, Gunther , Wilson, Christopher R. , Reeken, Rainer , Milek, Martin Andreas , Bund, Christine Brigitte , Gunjaca, Mirco
IPC分类号： G01R15/06 , G01R15/16 , G01R19/155 , H01R13/53 , H01R13/66
摘要： Sensored insulation plug (1) 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 (140) formed by a solidified insulating material (610),
b) an externally accessible detection contact (107),
c) a primary capacitor (150), 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 (160); ii) a sensing electrode (170) embedded in the plug body (140); iii) a dielectric formed by a first portion (180) of the insulating material (610), and
d) a testpoint capacitor (151), operable as a high-voltage capacitor in a detection voltage divider for detecting the elevated voltage and comprising i) the high-voltage electrode (160), ii) a testpoint electrode (171), embedded in the plug body (140) and electrically connected to the detection contact (107), and iii) a dielectric formed by a second portion (181) of the insulating material (610).

5. 发明公开

EP4001928A1 SENSORED INSULATION PLUG 审中-实审
公开(公告)号：EP4001928A1
公开(公告)日：2022-05-25
申请号：EP20208737.5
申请日：2020-11-19
申请人： 3M Innovative Properties Company
发明人： Gravermann, Mark , Stollwerck, Dr. Gunther , Bund, Christine Brigitte , Reeken, Rainer , Milek, Martin Andreas , Gunjaca, Mirco
IPC分类号： G01R15/06 , G01R15/16 , H01B17/28
摘要： Sensored insulation plug (1) for being inserted into a rear cavity of a medium-voltage or high-voltage separable connector in a power distribution network of a national grid.
The sensored insulation plug comprises
a) a plug body (140) formed by a solidified insulating material (610), and
b) a primary capacitor (150), operable as a high-voltage capacitor in a
voltage divider for sensing the elevated voltage, the primary capacitor having
i) a high-voltage electrode (160) for direct electrical connection to the elevated voltage;
ii) a sensing electrode (170) of a tubular shape, embedded in the plug body (140), arranged around the high-voltage electrode, and comprising a 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;
iii) a dielectric formed by a portion (180) of the insulating material (610) arranged between the sensing electrode (170) and the high-voltage electrode (160).
The mesh is a deformable mesh, adapted to be deformed by insulating material in liquid state flowing around the mesh before solidification of the insulating material.

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