3m Innovative Properties Company

Other

Mark Gravermann

Jens Weichold

Michael H Stalder

Bernd Schubert

Gerhard Lohmeier

Friedrich A Busemann

Giuliano Bolcato

Gunther A J Stollwerck

Christian Weinmann

Sebastian Eggert

Pasquale J Zanoli

Christopher D Sebesta

Harald Westkamp

Dipankar Ghosh

Myungchan Kang

Mark W Muggli

Rainer Reeken

Michael Petry

Werner Roehling

Sebastian Eggert-Richter

Holger J Kurzhals

Andreea Sabo

Carl J Wentzel

David V Mahoney

Gunther Stollwerck

Levent Biyikli

Christine B Bund

Johannes Fink

Guenter M Zilligen

Hermanus Franciscus Maria Van Meijl

Jaylon D Loyd

Christopher R Wilson

Michael D Benson

Benjamin Muenstermann

Frank Van Meijl

Mirco Gunjaca

Willy A Ahlmann

Guenther A J Stollwerck

Christine Brigitte Bund

Martin Andreas Milek

Gunther AJ Stollwerck

Holger Kurzhals

Giuliano Bolcatao

Gunther Dr Stollwerck

Michael Stadler

Voltage sensor () comprising a voltage divider () for sensing an AC voltage of a HV/MV power conductor (). For adjusting the common overall impedance of the low-voltage portion of the voltage divider towards a desired impedance, the low-voltage portion () comprises one or more low-voltage impedance elements (), a plurality of adjustment impedance elements () 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 (). The overall impedance of the high-voltage portion () and the overall impedance of the low-voltage portion () of the voltage divider () are adapted such that, by bringing one or more of the switches () into their connect state, the voltage divider () 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.

Adjustable voltage sensor

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.

Sensored insulation plug

Encapsulated PCB assembly () for electrical connection to a high- or medium-voltage power conductor in a power distribution network of a national grid, comprising a) a PCB (), delimited by a peripheral edge () and comprising a high-tension pad () on a voltage of at least one kilovolt, b) an electrically insulating encapsulation body () 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 () on an external surface () 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.

Encapsulated printed circuit board assembly

Voltage indication device (), attachable to a medium-voltage separable plug having a rear insert comprising a coupling electrode. The voltage indication device comprises a body () and a voltage detector () having a ground contact (), a voltage contact () for electrical connection to the coupling electrode; and an indicator for visually indicating presence of the medium voltage in the separable plug. The body comprises an elastically expandable support portion () for resiliently supporting the voltage detector ().

Voltage indication device

The invention relates to a sensor () for measuring a voltage in a HV/MV power network in a separable connector (), the sensor comprising: &#x2014;an adapter element () comprising a high voltage connection adapted to be mechanically and electrically coupled to a high voltage conductor () of the separable connector () and to receive HV/MV voltage from the separable connector, &#x2014;a sensor body () adapted to be mechanically and electrically coupled to the adapter element () and comprising a divider assembly () 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 () configured to provide a low voltage signal corresponding to a high voltage signal present in the HV/MV power network, wherein the adapter element () and the sensor body () are separate elements that are adapted to be installed to the separable connector (), wherein the adapter element is configured to be installed between the separable connector and the sensor body.

Sensor with discrete impedance elements for high voltage connectors

Elastic sleeve () for electrically insulating a HV/MV power conductor in a power network, comprising a) a shrinkable or expandable elastic sleeve body (); b) a receiving space () in the sleeve body, for receiving the power conductor; c) a cavity () formed in the sleeve body; and d) a divider assembly (), 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.

Elastic sleeve for a power conductor

The invention relates to a voltage sensing device for a high and/or medium-voltage power-carrying conductor, the voltages sensing device comprising: &#x2022; a carrier element () with a passageway for receiving the power-carrying conductor, &#x2022; wherein the carrier element comprises an electrode () extending in an axial direction of the passageway of the carrier element and operable as a first electrode of the voltage sensing device, wherein &#x2022; a conductor () of the power cable is operable as the second electrode of the voltage sensing device and wherein &#x2022; the carrier element has a coefficient of thermal expansion that is less than 5&#xd7;10^&#x2212;6 1/K at 20 C.

Voltage sensing device

The invention relates to a voltage sensing device () for a high and/or medium voltage power carrying conductor (), the voltage sensing device comprising: a radially outer electrode () operable as a first sensing electrode of a sensing capacitor for sensing the voltage of the power carrying conductor; a radially inner electrode () operable as a second sensing electrode of the sensing capacitor; a dielectric material () arranged between the inner and the outer electrode (), wherein the coefficient of thermal expansion of the material of at least one electrode () is selected such that it compensates the temperature dependent parameters of the dielectric material () and/or the other electrode (), that influences the capacity of the voltage sensing capacitor.

Voltage sensor () for a high- or medium-voltage power-carrying conductor for a power network, such as an inner conductor of a power cable or a cable connector or a bus bar. The voltage sensor has a tubular shape and an axial passageway (), which can receive the conductor. The voltage sensing device comprises a) a radially-inner electrode (), operable as a first sensing electrode of a sensing capacitor for sensing the voltage of the power-carrying conductor, b) a radially-outer electrode (), operable as a second sensing electrode of the sensing capacitor, and c) a solid carrier element (), at least a first portion of which is arranged between the inner electrode and the outer electrode, the first portion being operable as a dielectric of the sensing capacitor. The sensor can be accommodated in a cable accessory. The carrier element may comprise ceramic material to increase accuracy.

Voltage Sensor

Cable connection device for connecting a power cable to an electrical installation of a power network, comprising a conductor element having a first end portion, a second end portion, and a middle portion disposed between the first and the second end portion. The conductor element comprises a connector socket arranged at the first end portion, for mating with a cable plug. The connector socket is integrally formed with the middle portion.

Cable connection device

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.

Terminal connection device for a power cable

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

Closure for measuring voltage on power-carrying conductors

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.

Conductor assembly

A conductor assembly for a power network includes an inner conductor, an insulating layer arranged concentrically around the inner conductor, and a sensing electrode, arranged radially outward of the insulating layer, and operable as a first electrode of a sensing capacitor of a voltage sensor. The conductor assembly further includes a voltage pickup element having electrically conductive major surfaces, the first major surface being in a surface contact with the sensing electrode. The conductor assembly further includes an electrode wire, in electrical and mechanical contact with the voltage pickup element, for electrically connecting the voltage pickup element with an electric or electronic component disposed remote from the sensing electrode.

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.

Power cable terminal connection device

Growing community of inventors

Erkelenz, Germany

Mark Gravermann