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WO/2013/135719A1 |
The invention relates to a safety relay circuit, in particular having two relay switches (k1, k2) connected in series or in parallel in a load circuit (LN). A switch-position indicating circuit (A1) is associated with the relay switch (k...
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WO/2013/137979A1 |
A trip unit (16) includes a current sensor (18) to sense a value of current flowing through a conductor (26), a circuit (22) to receive first frequency pulses having a number of first frequencies (f2) from the conductor, a transmitter (2...
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WO/2013/124248A1 |
The invention relates to an arrangement for protecting systems and individuals, comprising a switching element which can be triggered by the detection of a fault arc. According to the invention, the electric energy for triggering the swi...
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WO/2013/124203A1 |
The present invention relates to a safety switchgear (1) for the failsafe switching on or off of a hazardous facility (10), comprising: an input for receiving an input signal; a failsafe control/evaluation unit (28), which processes the ...
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WO/2013/120101A1 |
A low let-through voltage surge suppression or protection circuit for protecting hardware or equipment from electrical surges. During operation when no surge condition is present, the circuit allows propagation of signals from a source t...
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WO/2013/107896A1 |
A method for transmitting measurement data 28a comprise the steps of: receiving measurement data 28a in a first communication module 22a; time stamping the measurement data 28a in the first module with a time tag 34; transmitting the mea...
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WO/2013/106239A1 |
Systems and methods of diagnosing a condition of a reverse-voltage protection switch (209) in an electric system (200). The electric system includes a power source (207), an electric load (201), and a reverse-voltage protection switch (2...
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WO/2013/092066A1 |
The present invention discloses a protection apparatus for an IT network having a first and a second live line, having a signal generator which is designed to feed a first signal to the first and/or to the second live line, having a dete...
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WO/2013/096001A1 |
A high-speed signaling device on a branch of an electric power distribution system modulates the signal from the branch and communicates the signal to an intelligent electronic device on a feeder to the branch at speeds sufficient for th...
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WO/2013/079110A1 |
It should be possible to diagnose a selectivity module in a targeted manner. For this purpose, a selectivity module is provided for dividing a load current in an installation system having a housing (2) and a plurality of branches (K1 to...
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WO/2013/076388A1 |
The invention relates to a device for protection from an electric arc (A) in an electric installation (1), said device comprising: at least one apparatus (14, 15) for detecting the electric arc, at least one short-circuiter (10) for esta...
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WO/2013/073269A1 |
A storage battery unit unifies a storage battery, a controller for monitoring the storage battery, a control power supply for supplying operating power to the controller, a charging/discharging terminal, and a break switch provided in a ...
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WO/2013/053912A1 |
The invention relates to a method for detecting an arc in a DC circuit. The method comprises the following steps. An AC component (IAC) of a current (I) flowing in the circuit is measured and analyzed and at least one parameter of the AC...
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WO/2013/034633A1 |
The invention relates to an arrangement (1) for distributing current, comprising two interconnected switches (2, 2a), particularly power switches for low voltages, one of these switches (2) being arranged upstream of the other switch (2,...
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WO/2012/148644A9 |
The present invention provides a conductive polymer fuse comprising a substrate having printed thereon poly(3,4-ethylenedioxythiophene)/poly(styrene-sulfonate) and one or more high conductivity connections, wherein the conductive fuse is...
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WO/2013/025411A1 |
A controller-based detection system configured to adaptively learn to distinguish between detected light that is indicative of an arc fault event and detected light that is not related to an arc fault event. In particular, the detection ...
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WO/2013/014250A1 |
In a method for detecting arc-caused electrical effects in an electrical installation system, according to the invention at least one current curve and/or voltage curve in the electrical installation system is recorded by a measured-valu...
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WO/2013/010591A1 |
The invention relates to a method for determining a faulty section of a power supply line (10a) which is fed from one side and which is divided into a plurality of sections (14a-c) by switching devices (13a-d), wherein each switching dev...
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WO/2013/010221A1 |
The invention provides a method and apparatus for electronically testing the safety of sources of energy such as electrical circuits, in explosive atmospheres such as high risk mining situations, using an electronic spark tester (EST) in...
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WO/2013/011152A1 |
The invention relates to an electronic overload relay (1) comprising internal phase conductors (31; 32; 33), current transformers (5; 6) connected to said phase conductors, and a fault detection circuit (7) that interrupts the phase curr...
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WO/2013/004295A1 |
A method for detecting an arc fault in a photovoltaic power circuit (1 ) comprising a photovoltaic generator (2), the method comprising the following steps: A photovoltaic generator (2) is operated at a first working point. A first signa...
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WO/2012/175108A1 |
The present disclosure relates to a method of protection zone selection in a multiple busbar arrangement (11), the multiple busbar arrangement comprising busbar zones (ZA1, ZB1, ZC1, ZA2, ZB2, ZC2) and bays (FB-1, BC-1, BS, BC-2, FB-2) c...
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WO/2012/175779A1 |
The invention relates to a method for monitoring partial discharges in voltage distribution elements (4), both online and offline, of a high-voltage electrical power distribution network (2) provided with distribution elements (4). The m...
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WO/2012/171694A1 |
The invention concerns a method for reliable detecting and monitoring of a multitude of different earth faults in three-phase electric power distribution networks. A method is presented which combines a transient estimation method with a...
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WO/2012/159714A1 |
The invention relates to a working apparatus, comprising an electrical consumer and a residual-current protective switching device provided therefor. The consumer is fed with energy via a network current for the operation thereof. When p...
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WO/2012/159652A1 |
The method of detecting an arc fault in a power circuit comprises the following steps. An AC-signal is injected into the power circuit (52) and a response signal that is related to the injected AC-signal is measured in the power circuit ...
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WO/2012/155974A1 |
The invention relates, inter alia, to a method for generating a fault signal (ST, STneu) that displays whether an internal transformer fault is present. According to the method, a differential current signal (id) that indicates the diffe...
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WO/2012/152304A1 |
The invention relates to a method for recognising a symmetrical short-circuit in a power supply network, wherein with a first protective device (15d) a first section (C) of the power supply network is monitored for a symmetrical short-ci...
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WO/2012/143361A1 |
The invention relates to a circuit assembly for an alternating current contactor comprising an excitation coil, wherein the excitation coil comprises at least one first winding for generating a pick-up and/or release current, to a motor ...
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WO/2012/136390A1 |
An apparatus for testing an arc fault detector comprises a housing (30) having an ac power input plug (32) and an ac power output socket (34), the plug being connected to supply ac power to the socket via electrical supply conductors (L,...
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WO/2012/127007A1 |
The invention relates to a domestic appliance (1) comprising a power cable (2) that has a power plug (3) for connecting the domestic appliance (1) to a power supply and comprising a control device (4) for controlling the operation of the...
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WO/2012/126504A1 |
The present invention relates to a method for linearizing voltage transmission through a transformer including a magnetic core and, input and output windings. A measurement signal is supplied to the input winding at a first frequency and...
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WO/2012/125238A2 |
In one aspect, a method for detecting arc faults with a dynamically-changeable slope threshold is disclosed. The method may include monitoring a current waveform to determine a peak amplitude of a half cycle and a slope at a zero crossin...
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WO/2012/116722A1 |
The method of detecting an arc fault in a power circuit comprises the following steps. A first signal related to current (I) flowing in the power circuit is determined. The first signal is analyzed for determining whether the signal indi...
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WO/2012/113419A1 |
The invention relates to a method (60, 76, 88, 112) for identifying arcing faults within a circuit having a system frequency, an electrical current and an electrical voltage, in which method an interference signal (28) occurring, which h...
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WO/2012/096863A1 |
A circuit for measuring current is drawn by a self-powered electronic protection device. The circuit monitors current in a polyphase alternating current (AC) power source by measuring current in a rectified secondary winding of a current...
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WO/2012/096807A1 |
Systems, methods, and devices are presented for mitigating arc fault events in a photovoltaic system. An aspect of this disclosure is directed to a photovoltaic system for generating electrical power. The photovoltaic system includes one...
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WO/2012/076122A1 |
An apparatus for detecting an arc in a power supply system of a motor vehicle (1), which apparatus is configured for measuring the voltage and/or the current of at least one consumer of the power supply system and has evaluation means (3...
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WO/2012/067750A1 |
A fault detection system is provided for a power distribution system having at least first and second line conductors carrying AC currents that are out of phase with each other from a source to a load, and a common neutral conductor. The...
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WO/2012/054337A1 |
An electronic circuit breaker includes controllable contacts 812) adapted to connect a power source (10) to at least (11), and a microcontroller (14) for monitoring the flow of power to the load (11), detecting different types of fault c...
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WO/2012/054363A1 |
An electronic circuit breaker includes controllable mechanical contacts (12) adapted to connect a primary power source (10) to at least one load (11); and control circuitry (14-19) for monitoring the flow of power from the primary power ...
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WO/2012/048121A1 |
A solid-core surge arrester includes a module assembly. The module assembly includes at least one metal oxide varistor (MOV) disk with an outer circumferential surface, and a material applied to the outer circumferential surface. The mat...
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WO/2012/041647A1 |
The arrangement according to the invention serves for monitoring electrical power consumption of a conductor circuit (2), wherein the conductor circuit (2) comprises at least one series built-in unit (1) and is coupled to a monitoring de...
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WO/2012/042318A1 |
A self powered relay having a feature for powerless trip reset in the relay is provided. The relay makes use of one or more capacitors (120, 130) for storing energy for trip operations during the normal condition in an electrical system....
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WO/2012/028247A1 |
The invention relates to a method and device for safely switching a direct-voltage system (1), in particular a photovoltaic system, in the event of an arc occurring on the direct-current side, wherein the generated direct current and the...
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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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