Eaton Intelligent Power Limited

Yogesh Rajwade

Santosh Kumar Sharma

David Glenn Loucks

Volker Heins

Christoph Bausch

Eddie Wilkie

Marcel Van Dijk

Amritendu Das

Adri Lammers

Vijay Kumar

Prasad Arvind Venikar

Elisabeth Morskieft

Axel Britz

Sandeep Yeole

Himadri Sengupta

Pradeep Bhutada

Wilhelmus Van Den Bogaard

Rajasekhar Navara

Elise Morskieft

Tejaswini Shirsath Shirsath

Voltage samples are collected for a source and loads connected thereto by an electrical network. Respective negative sequence voltage difference values are generated for respective source/load pairs from the voltage sample. A connection (e.g., a loose connection) in the electrical network is identified based on the generated negative sequence voltage difference values. The identified connection is reported to a user. Identifying a connection in the electrical network may include identifying at least one source/load pair having an associated negative sequence voltage difference value that meets a predetermined criterion and identifying the connection based on the identified at least one source/load pair. Identifying the connection may include identifying at least one source/load pair having an associated negative sequence voltage difference value with a magnitude falling outside of at least one range associated with the at least one source/load pair.

Apparatus, methods and computer-readable media for detection of loose connections in an electrical assembly

Sensor part for installation in medium-voltage cable compartments, which sensor part comprises a voltage divider based on the capacitive divider principle, which voltage divider comprises: —a first capacitor, comprising an elongate primary conductor wrapped in a dielectric material and an elongate conducting shield arranged around the dielectric material, which first capacitor has a first capacitance rating; —a second capacitor, having a second capacitance rating, which second capacitor further comprises a first lead conductively connected with the conducting shield of the first capacitor and a second lead conductively connected to a common reference, such as earth; —a voltage output line, conductively connected with the conducting shield of the first capacitor; wherein the second capacitance rating is larger than the first capacitance rating, so that when during use the primary conductor is conductively connected with a live circuit carrying an alternating current, a measurement of a voltage between the common reference and the voltage output line can be taken as a ratio of the voltage between the live circuit and the common reference.

Sensor part for installation in medium-voltage cable compartments and a device for measuring a voltage in medium-voltage circuits comprising such sensor part

A method of predicting a lifetime of a gas filling of an electrical switchgear is disclosed, wherein pressure values p, pin a system of the electrical switchgear containing the gas filling at a predefined temperature Tat different points in time t, tare measured. Based on the pressure difference Δp between the pressure values p, pthe lifetime of the gas filling is calculated. Alternatively, the pressure values p, pcan be taken at temperatures T, Twithin a predefined temperature range at different points in time t, t.

Lifetime prediction of a gas filling of an electrical switchgear

A short circuit test device includes: a first line test conductor couplable to a first load line conductor of an electric load network and a neutral test conductor couplable to a neutral conductor of the electric load network; a voltage source switchable to the first line test conductor and the neutral test conductor to output a predefinable test signal; a measurement unit for measuring an electric voltage and/or current, the measurement unit including measurement inputs which are connectable to the first line test conductor and the neutral test conductor, the measurement unit including an output for providing a measurement signal; and a control unit connected to the voltage source and the measurement unit, the control unit: causing the voltage source to apply a test voltage to the first line test conductor and the neutral test conductor and comparing the measurement signal provided by the measurement unit.

Short circuit test device

Growing community of inventors

Pune, India

Yogesh Rajwade