3m Innovative Properties Company

Christopher D Sebesta

Myungchan Kang

Mark Gravermann

Dipankar Ghosh

Justin M Johnson

Jens Weichold

Carl J Wentzel

Christian Weinmann

Michael H Stalder

David V Mahoney

Bernd Schubert

Gerhard Lohmeier

Friedrich A Busemann

Sebastian Eggert

Rainer Reeken

Michael D Benson

Andreea Sabo

Tao Yang

Jia Hu

Jaewon Kim

Zheng Huang

Levent Biyikli

Giuliano Bolcato

Ryan D Erickson

Zhiguo Wen

Qihong Nie

Michael Petry

Jaylon D Loyd

Werner Roehling

Sihua Yuan

Gaofei Guo

Tongyong Li

Xeutao Yu

A temperature-sensing apparatus for sensing the temperature of an electrical conductor (), comprising a sensor frame () including a frame body () and a channel () adapted to accommodate the electrical conductor (). At least a portion of a temperature sensor is received in a chamber () of the sensor frame (). At least a portion of a thermal contact member is disposed between the electrical conductor () and the temperature sensor and configured to enhance thermal-contact therebetween. At least a portion of the thermal contact member is radially pressable against the electrical conductor ().

Real-time temperature measurement for electrical conductors

A voltage sensor comprises a conductor () having a first end () and a second end (), the first end including a first connection interface () and the second end having no connection, and a sensor section () including at least one sensor disposed over the conductor, the sensor sensing the sensor sensing at least a voltage or a sample of the voltage of the conductor. The voltage sensor is coupleable to a power line or cable, such as an overhead power line or cable, or a cable accessory, and can also be used in underground applications.

Voltage sensor

Provided is a system for directly sensing, measuring, or monitoring the temperature of an electrical conductor () of a power cable (). A temperature sensitive capacitor (C) is disposed in direct thermal contact with the electrical conductor (). The temperature sensitive capacitor (C) includes a dielectric material that has a dielectric constant variable with the temperature of the electrical conductor (). The temperature of the electrical conductor () can be sensed, measured, or monitored by measuring the capacitance of the temperature sensitive capacitor (C).

Capacitive temperature sensing for electrical 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

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

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

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Brooklyn, NY, United States of America

Christopher D Sebesta