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Abb Technology Ltd

Abb T&d Technologies Ltd.

Carlo Gemme

Luciano A Di Maio

Alessandro Colombo

Fabio Pellegrini

Andrea Moratto

Christian Reuber

Gabriele Valentino De Natale

Richard Tinggren

Carlo Cereda

Massimo Bresciani

David Carera

Gabriele Suardi

Pentti Mahonen

Radek Javora

Peter Krippner

Lars Liljestrand

Kai Hencken

Osvaldo Prestini

Stefano Magoni

Daniel Schrag

Marty Lynn Trivette

Giorgio Moriconi

Giorgio Magno

Paolo Gritti

Callisto Gatti

Fabio Capelli

Giuliano Corbetta

Roberto Borlotti

Marco Egman

Enrico Elli

Giandomenico Testi

Ravindra Borse

Gunter Lichtenberger

Salvatore Cassara′

Karl-Heinz Hartung

Alfonso Terrazzino

Dukkaiappan Subbaiahthever

Selvakumar Meyappan

Harsha Vaddin

Dukkaiappan Subbalahthever

Jarkko Makela

Marty Trivette

For monitoring diagnostic rules of a power system, an exemplary method is disclosed and includes collecting operational diagnostic data from a first primary device; identifying a change of a diagnostic indicator based on the operational diagnostic data; adapting a diagnostic rule to the identified change, wherein the diagnostic rule is applicable to the diagnostic data for determining a diagnostic warning which indicates a diagnostic state of a primary device; and providing a diagnostic warning of a second primary device by applying the adapted diagnostic rule to operational diagnostic data collected for the second primary device.

Monitoring of primary devices in a power system

A retrofitting device for medium voltage panels which comprises a plurality of first and second horizontal CB contacts aligned in a first and second horizontal plane, a plurality of first and second vertical SWG contacts aligned in a first and second vertical plane, a first bar assembly comprising first connection elements for connecting each of said first horizontal CB contacts with a corresponding first vertical SWG contact, a second bar assembly comprising second connection elements for connecting each of said second horizontal CB contacts with a corresponding second vertical SWG contact, said first connection elements comprising a first portion and a second portion linked to each other and free to change the angular position with respect to each other in a vertical plane when in an unlocked condition, said second connection elements comprising a third portion and a fourth portion linked to each other and free to change the angular position with respect to each other in a vertical plane when in an unlocked condition, first locking means being provided to lock the first with second portions and the third with the fourth portions in a desired position in which said first horizontal CB contacts and said second horizontal CB contacts are positioned on a substantially same vertical plane.

Retrofitting device for medium voltage switchgear

A coil actuator for a low and medium voltage switching apparatus comprising a coil electromagnet (), a power and control unit (), which comprises a power circuit () operatively connected to said coil electromagnet () and a processing unit () operatively connected to said power circuit and controlling the trip of said coil electromagnet () through said power circuit (). The power and control unit () comprises an optical port (), which is suitable to be operatively connected to an optical fiber cable (), and a first detection unit (), which is operatively connected to said optical port and to said processing unit. The first detection unit () is suitable to receive a light signal (L) from said optical port and to output a first detection signal (D) indicative of the presence of an arc fault, depending on said light signal. The processing unit () is suitable to receive said first detection signal (D) from said first detection unit and to control the trip of said coil electromagnet (), depending on said first detection signal. In a further aspect, the invention relates to an arc fault coil suppression device including said coil actuator.

Coil actuator a for low and medium voltage switching apparatus and an arc fault coil suppression device comprising said coil actuator

An electrical adapter is disclosed for connecting a connection contact of a circuit breaker with an associated contact piece of an electrical circuit along which the circuit breaker has to be inserted, including a hollow tubular element having a first end portion and a second end portion configured to be electrically connected to a connection contact and a contact piece, respectively, an inner cavity of the hollow tubular element having, at the first end portion, a first frusto-conical shape. A first connector having a hollow deformable body and configured to be accommodated inside the first end portion. A locking body configured to be securely placed along the inner cavity of the hollow tubular element. A second connector including a first connection portion configured to be accommodated inside the first end portion of the hollow tubular element.

Electrical adapter, and related switchgear panel

A shutter device is disclosed for an electric switchgear panel, including a base configured to be placed on a bearing surface inside the switchgear panel, the base being adapted to support, positioned thereon, a current switching device movable between a connected position wherein the switching device is electrically connected to an associated electrical circuit and a disconnected position wherein the switching device is electrically separated from the corresponding electrical circuit, a frame having at least a portion which rises up transversally from the base and delimits a through aperture, a movable shutter operatively associated with the base and the frame and an actuating mechanism adapted to move the shutter between a first position where the shutter closes at least partially the through aperture and a second position wherein the shutter is retracted and leaves the through aperture at least partially opened.

Shutter device for an electrical switchgear panel, and related switchgear panel

A combined measuring and detection system is disclosed which includes an electronic evaluation unit for analyzing a broad frequency spectrum of measured quantities and one or more measuring devices for measurement of one or more of a magnetic field, an electric field, a current, and a voltage. The measuring devices are operatively connected to the electronic evaluation unit, which is provided with at least one frequency splitter dividing the measured quantities into a low frequency component and into a high frequency component. Low frequency components are used for measurement and protection analysis and high frequency components are used to detect partial discharges activity.

Combined measuring and detection system

A retrofit assembly and method of retrofitting a circuit breaker in a switchgear are described. The retrofit assembly can includes one or more adjustable elements for fitting a circuit breaker into a switchgear panel of the switchgear. The adjustable elements can include a plurality of adjustable modular female tulip contacts to receive a corresponding plurality of male contacts in a panel of the switchgear, each female tulip contact being flexible for a plurality of diameters, a plurality of modular phase adjustment contact arms to provide phase alignment between the poles of the circuit breaker, and/or an adjustable truck for placing the circuit breaker in contact with a rack for the circuit breaker in the switchgear.

Method and system for retrofitting a circuit breaker

A switchgear panel and a method for servicing/maintaining a switchgear panel are disclosed which provide a Human Machine Interface that includes a first memory unit, and a first circuit breaker on board of which an Intelligent Electronic Device is placed. The Intelligent Electronic Device having an associated memory unit. The first memory unit and/or on the associated memory unit storing sets of data related to one or more of the switchgear panel, the first Intelligent Electronic Device, and the first circuit breaker. The Human Machine Interface is in operative communication with the first Intelligent Electronic Device, to transfer and save one or more of the sets of data stored on the associated memory unit onto the first memory unit or vice versa.

Method for performing service/maintenance on a switchgear panel, and related switchgear panel

An electric power distribution switchboard () in which one or more functional units are equipped with a switching device compartment () that integrates primary and secondary functions. Within the switching device compartment () are included, together with the switching device (), the current and voltage sensors (), the position sensors for interlocking, a human machine interface (HMI) and an Intelligent Electronic Device (IED) () and the related local configuration point () to configure the IED (). The IED () realizes functional unit supervision, control, protection, communication and monitoring and acts as a concentrating point of functional unit information and decisions. The switchboard () of the invention further comprises power supply section, an I/O section and a communication system.

Medium voltage integrated switchgear

Human-machine interface for electrical protection devices

A circuit breaker (), in particular a medium voltage circuit breaker, having a current () and/or a voltage measuring device () integrated thereon. The integration can be functional and/or physical. The functionally integrated current and/or voltage measuring device provides primary current and voltage representative signals to an on-board electronic device () in order to realize the measure, process, and protection functions as a whole.

Circuit breakers with integrated current and/or voltage sensors

A method for calibrating voltage sensors in a switchboard, using a communication bus which comprises the following steps: i. performing a measurement using a first voltage sensor; ii. transmitting an information derived from said measurement to an electronic device, through the communication bus; iii. using said information to calibrate a second voltage sensor.

Method for on-line calibration of low accuracy voltage sensor through communication bus

A fault current limiting system includes switching means for providing a fast switching operation; a parallel current path comprising a limiting fuse; and a switching system to automatically replace a blown set of fuses with an unblown set of fuses after a fault current limiting operation has occurred. A method of limiting fault current includes providing a fast switching operation; providing a parallel current path comprising a limiting fuse; and automatically replacing a blown set of fuses with an unblown set of fuses after a fault current limiting operation has occurred.

Fault current limiting system and method

A method for designing a power factor controller apparatus for a power distribution network comprising the phases of: configuring, in a predefined computerised support, an interactive computerised environment () dedicated to the management of data and/or programming commands (reference); and acquiring, in said interactive computerised environment, data related to said power factor controller apparatus (reference); and acquiring and/or calculating, in said interactive computerised environment, data related to the power distribution network (reference) wherein said power factor controller apparatus is installed; and based on said phase e), calculating, in said interactive computerised environment, the optimal chasing of a power factor target for said power factor controller apparatus (reference).

Method for designing a power factor controller apparatus

Growing community of inventors

Pavia, Italy

Carlo Gemme