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WO/2012/013737A1 |
The invention relates to a device for monitoring a circuit breaker and to a circuit breaker, in particular for low voltages, for interrupting an alternating current flowing through a conductor (2) when a current limit value is exceeded w...
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WO/2012/012486A1 |
A system is provided including: an arc fault circuit interrupter AFCI (12) having a line side terminal (L,N,G) and a load side terminal (L',N',G'), wherein the line side terminal is coupled to a voltage source (16 '), and a current sourc...
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WO/2012/003074A1 |
An electrical assembly having an elongated electrical component, such as a surge arrester, coupled to a grading device for distributing an electric field along the electrical component during operation. The grading device includes a grad...
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WO/2011/151267A2 |
An arc fault detector comprises a current transformer (CT) having a primary winding and a secondary winding (W1), the primary winding being formed by at least one conductor (L) of an AC or DC supply circuit. The inductance of the CT is s...
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WO/2011/143374A1 |
An overvoltage protection circuit includes a voltage clamping device having a predefined voltage threshold at which it starts conducting to prevent an overvoltage condition. A switch is operable to control a flow of current from a power ...
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WO/2011/127270A2 |
In one aspect, a method of electrical arc fault detection when high frequency (e.g., RF noise) is present is disclosed. The method includes determining if first arcing criterion is met, determining if delay criterion is met, implementing...
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WO/2011/126460A1 |
The purpose of the invention is to create a switch (4), by means of which formation of an arc due to e.g. a defect of a conductor or due to a contact between conductors could be detected in a DC electric current, and prompt interrupting ...
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WO/2011/121386A1 |
The invention describes a method for coordinated transfer of control in a substation system comprising IED or logical devices (LD1, LD2) /servers using GOOSE messages with preconfigured data models with logical nodes (LN1, LN2) containin...
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WO/2011/120112A1 |
improvements introduced in monitoring system of dielectric state of high voltage equipments with cap acitive insulation, such as condensive bushings, current transformers, potential transformers and similar allow to detect quick evolutio...
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WO/2011/091820A1 |
The invention relates, inter alia, to a method for operating an arrangement (10) which is suitable for protecting, controlling and/or monitoring an electrical switchgear or energy supply system and comprises: a central control unit (20),...
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WO/2011/088500A1 |
A safety control method and system to activate equipment includes multiple operation of an activation device e.g. as a safety interlock, such as a manual foot or hand control (e.g. a trigger, switch, pedal or button) to initiate activati...
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WO/2011/091348A2 |
Detection of fault occurrences within a power distribution system. A transient detector and fault classification system (10) implements an algorithm that detects transients which may result from the occurrence of a fault in the power dis...
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WO/2011/073019A1 |
The invention relates to a method for testing electric components (3, 4) in a mains supply, in particular a mains supply for a building, according to which a test command (CH) is transmitted by a test unit (1) in the form of a data trans...
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WO/2011/073772A2 |
A direct current arc fault circuit interrupter includes separable contacts and a trip circuit to trip open the contacts. The trip circuit includes a number of alternating current sensors structured to sense a current flowing through the ...
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WO/2011/052860A1 |
The present invention relates to an improved PCB plate circuit mounted in a thermotherapy device used for providing heat fomentation and hot massage effects. The PCB plate circuit according to the present invention comprises a main contr...
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WO/2011/039074A1 |
A communication network for a low-voltage switchboard comprising three types of communication bus. The first communication bus is designed to provide a first communication channel with at least one electronic protection device. A second ...
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WO/2011/027010A1 |
The present invention relates to a method for protecting human beings against electric shocks. The method is used to detect power being passed through a human body that is insulated from the earth or has no earth connection, said method ...
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WO/2011/022124A1 |
Energy dissipative tubes and sealing devices are provided, along with methods of fabricating and installing the energy dissipating tubes and sealing devices. An energy dissipative tube can include a length of tubing, a first resin layer ...
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WO/2011/014895A1 |
An arc detector comprises an analysis unit for evaluating the first measurement signal according to at least one first evaluation scheme for detecting an arc or at least one electrical effect of the arc on the electrical load network (2)...
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WO/2011/012450A1 |
The invention relates to a supply device for providing electrical energy at a load circuit, containing a safety and monitoring device (50) separately associated with the load. The load circuit can be connected via connection means (10) t...
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WO/2011/003475A1 |
An Intelligent Electronic Device (IED) having a faceplate provided with at leastone visual indicator (33) which emits light to indicate a status of the IED to a viewer, the IED having enhancing means for enhancing the visual impact of th...
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WO/2010/147832A1 |
An apparatus to detect arc is presented. The apparatus includes a fiber sensor to detect characteristics of an arc flash and a processor to process at least two characteristics of the are flash. The processor is further configured to gen...
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WO/2010/144689A1 |
A circuit protection device for protecting a photovoltaic (PV) system from an overcurrent condition. The circuit protection device includes a first electrode electrically connectable to a first line of an electrical circuit, a second ele...
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WO/2010/142525A1 |
The present invention is concerned with simplified engineering of protection lockout functionality in a Substation Automation (SA) system. Wiring complexity as well as supervision related engineering is replaced by including some protect...
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WO/2010/140055A1 |
Arc fault detection method and apparatus employ an impedance-based current sensor to provide a sensing signal indicative of current through a conductor. The impedance-based current sensor diverts high frequency components of current thro...
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WO/2010/130296A1 |
The invention concerns a FPAA-based Mho distance relay considering CVT transient supervision and a method of realizing such a relay. Said relay comprises : - means for applying zone one polarizing and operating signals for three phase to...
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WO/2010/096851A1 |
The invention relates to an arc detector (1) for detecting light arcs in electric networks, comprising at least one sensor (2) for the essentially signal-authentic capture of a current and/or voltage signal in at least one electric line ...
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WO/2010/096852A1 |
The invention relates to a detector unit (1) for detecting high-frequency electric disturbances in electric networks, comprising at least one sensor (2) for the essentially signal-authentic capture of a high-frequency current and/or volt...
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WO/2010/094049A1 |
In order to reduce the risk of fire due to faults in electrical networks, it is proposed in a circuit breaker (11), comprising break contacts for the predetermined shut-off of an electrical network, wherein the break contacts can be actu...
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WO/2010/078889A1 |
The invention relates to a monitoring unit for monitoring and/or signaling or visualizing a plurality of operating parameters of a gas-insulated switchgear system, having a current and voltage supply unit (100) located in the housing of ...
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WO/2010/079325A2 |
A solar power conversion device has an embedded security module for creating trusted metering data in relation to power generated and for delivering it to a metering data output. The security module might for example be constructed as an...
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WO/2010/076002A1 |
The present invention relates to a method for determining partial discharges at an electrical component (10). According to the method, an electrical signal comprising partial discharge impulses due to partial discharges of the electrical...
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WO/2010/070430A1 |
An electrical switching apparatus (14A;20;22;34;64;1 18;120;142) comprises: a first terminal (40); a second terminal (42); separable contacts (44) electrically connected between the first terminal and the second terminal; an operating me...
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WO/2010/070436A1 |
An arc fault circuit interrupter includes separable contacts, an operating mechanism and an arc fault detector structured to detect an arc fault condition operatively associated with the contacts. The arc fault detector includes a tuned ...
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WO/2010/054415A1 |
In a residual current circuit breaker (1) having a first unit (2) which is designed to detect a residual current inside an electrical power supply system and to output an analogue residual current signal, an analogue/digital converter (3...
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WO/2010/034635A1 |
The invention relates to a method for generating an error signal (F) which indicates an error in an energy transmission system (11) (transmission system element), wherein as part of the method it is checked whether an activation process ...
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WO/2010/036218A1 |
There is disclosed an electrostatic discharge (ESD) protection device and method. An electronic device (100) that employs an exemplary embodiment of the present invention comprises an electronic component (106) having a signal input cond...
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WO/2010/025091A1 |
A protection relay with integrated communications may include a protective relay portion to perform protective relay operations associated with a load operatively connected to the protection relay, and a communications server portion to ...
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WO/2010/015811A1 |
An overload relay (101) for protecting a motor or other device from an overload condition and a power supply unit for supplying power to the overload relay. The overload relay has: a plurality of shunt resistors (110a, 110b, 110c), each ...
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WO/2010/014302A1 |
A method and apparatus are provided for detecting a fault condition on a power system. By rectifying power system phase voltages to produce a rectified waveform, and filtering the rectified waveform or a representation of the rectified w...
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WO/2010/010061A1 |
A trigger is provided for switch closing of a dynamic switch that opens under current flow, said trigger being based on a measurement of the current flowing through the switch during burning of an arc. The voltage of the arc is measured ...
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WO/2010/006632A1 |
The invention relates to a method for producing a fault signal, which indicates a single-pole or a double-pole fault in a three-phase electrical power grid which occurred during a present electric oscillation in the electrical power grid...
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WO/2010/005658A1 |
The present disclosure describes a system for monitoring energy data having at least one wireless current transformer, a metering circuit configured to receive an analog signal from the current transformer and to calculate energy data, a...
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WO/2009/156513A1 |
The invention relates to a method for selectively triggering circuit breakers (LS1, LS2, LS3) in the event of a short circuit, wherein an upstream circuit breaker (L1) and at least one downstream circuit breaker (LS2, LS3) on the output ...
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WO/2009/152538A1 |
It is proposed in the case of a residual current-operated circuit breaker (1), comprising at least one core-balance transformer (2) through which at least one first conductor (15) and a second conductor (16) of a power system to be prote...
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WO/2009/152539A1 |
In a fault current circuit breaker (1), comprising at least one total current converter (2), through which at least one first conductor (15) and a second conductor (16) of a network to be protected are run, wherein on the total current c...
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WO/2009/152540A1 |
In order to reduce the complexity of electric installation structures and increase the safety of people and equipment, it is proposed in an electric installation structure (1), comprising an electric energy distribution network (2) and/o...
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WO/2009/147078A1 |
The invention relates to a method and a system for the differential protection of an electrical link (7) in a medium-voltage, high-voltage or very high-voltage network. This method, in which two differential protection devices (8, 9) are...
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WO/2009/142657A1 |
A surge protection circuit to reduce capacitance inherent of standard diode packaging and to improve voltage clamping reaction speeds under high surge conditions. The surge protection circuit has a coil having a first end and a second en...
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WO/2009/130210A1 |
It is presented an arc detector for detecting undesired arcs. The arc detector comprises: an antenna for receiving an electromagnetic signal representing an arc; and a discriminator for analysing a signal from the antenna, the discrimina...
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