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Patent Searching and Data


Matches 701 - 750 out of 13,007

Document Document Title
WO/2014/180184A1
A transient and direct-current synchronous trigger type power clamp ESD protection circuit. The ESD protection circuit comprises´╝Ü a transient trigger module, a direct-current voltage trigger module and a discharge device, wherein the t...  
WO/2014/102445A8
The invention relates to a method and an arrangement for determining an end-of-life of an overvoltage protection element (2) by determining (101) a predefined voltage limit based on a nominal voltage, determining (102) a measuring voltag...  
WO/2014/169509A1
A power distribution network overvoltage protector equipped with a ring-shaped electrode and distanced grades, comprising: a bracket (1), wherein an insulator (2) and a lightning arrester (3) are respectively arranged on the bracket (1);...  
WO/2014/172548A1
A base element and a surge protection system incorporating the base element are provided. The base element includes a housing having a front portion and a rear portion. Apertures in the rear portion provide access to contacts secured wit...  
WO/2014/170361A1
The present invention relates to a downhole wireline tool for performing an operation in a well at a depth of up to 15 km downhole, the tool being powered by direct current at a predetermined voltage in a first end by a power supply unit...  
WO/2014/166130A1
The present invention relates to an overvoltage protection device and protection method for an alternating current side of a flexible direct current transmission system. The protection device is connected to both ends of a grounding resi...  
WO/2014/166129A1
An overvoltage protection device and protection method for a direct current side of a flexible direct current transmission system. The protection device (7) is connected to a positive electrode and a negative electrode of a direct curren...  
WO/2014/167427A1
A system, method, and/or computer program product comprises an input/output (I/O) bus and an intelligent current bank that couples a voltage source to the I/O bus. The intelligent current bank includes an ammeter that measures a real-tim...  
WO/2014/166658A1
Field device (FG) in process automation engineering comprising a protective circuit (SS) between a communication interface (K) of the field device (FG) and a signal processing unit (BE) of the field device (FG), wherein the communication...  
WO/2014/166660A1
There is a current limiter (10) for selectively limiting a rate of change of current in a DC electrical network. The current limiter (10) comprises: a first electrical block including an inductive element (24); and a second electrical bl...  
WO/2014/167064A1
The invention relates to a protective circuit for protecting an output stage (5) in the event of faulty contacting of the electrical connections (2, 3, 4), wherein the output stage (5) consists of a driver unit and has an analog or digit...  
WO/2014/166262A1
An overvoltage protection device and protection method for an alternating-current side of a flexible direct-current power transmission system. A protection device (7) is connected to the two sides of a grounding resistor (6) at the side ...  
WO/2014/166751A1
The invention relates to an arrangement for overload protection for overvoltage protection equipment that has at least one voltage-limiting element and at least one voltage-switching element, and optionally with a back-up fuse, wherein t...  
WO/2014/162950A1
This current-limiting device (10), which uses a superconductor to limit current flow, is provided with the following: a superconducting current-limiting element (8) containing a superconductor; a capacitor (series capacitor (1)); an indu...  
WO/2014/164182A1
A device includes a snapback clamp circuit configured to clamp a supply voltage in response to the supply voltage exceeding a trigger voltage level. In at least one embodiment, the snapback clamp circuit includes a clamp transistor and a...  
WO/2014/161033A1
A surge reduction filter (SRF) includes a cartridge having a cartridge housing, a first active connection point for connection to an active line of an AC power supply, and a neutral connection point for connection to a neutral line of th...  
WO/2014/162949A1
This current-limiting/flow control device (10) is provided with the following: a superconducting current-limiting element (8) that contains a superconductor; a series capacitor (1); and a parallel circuit. The series capacitor (1) is con...  
WO/2014/155289A1
The invention discloses a short circuit protection device (100) which comprises a first terminal (110), a second terminal (120), a third terminal (130), a fourth terminal (140), wherein the third terminal and the fourth terminal are conf...  
WO/2014/153779A1
According to one aspect, embodiments herein provide a power distribution device including a power outlet comprising a receptacle including an internal conductor configured to be coupled to a power source and to an external conductor inse...  
WO/2014/158715A1
ABSTRACT OF THE DISCLOSURE A circuit interrupting device having an auto-monitoring circuit for periodically testing various functions and structures of the device. The auto-monitoring circuit initiates an auto-monitoring routine which, a...  
WO/2014/158720A1
A circuit interrupting device having an auto-monitoring circuit for automatically testing various functions and structures of the device. The auto-monitoring circuit initiates an auto-monitoring routine which, among other things, establi...  
WO/2014/150152A1
A current limiter system includes a superconducting fault current limiter (SCFCL) operative to conduct load current during a normal operation state in which the SCFCL is in a superconducting state. The current limiter system also include...  
WO/2014/147093A1
A method of establishing current limits for each of a plurality of device couplers mounted on a trunk of an electrical circuit at distributed physical positions, in which each of said device couplers is capable of servicing one or more s...  
WO/2014/150280A1
An apparatus is described. The apparatus includes an input device. The apparatus also includes a positive supply voltage pad. The apparatus further includes an input signal pad. The apparatus also includes a ground pad. The apparatus fur...  
WO/2014/153151A2
Apparatus and methods for selective protection of an electrical load from disturbances on an input power line. A power protection circuit includes a selectively variable inrush current limiting circuit and a switch for disconnecting the ...  
WO/2014/141634A1
A load controller (10) is provided with a main switching unit (1), a control circuit (4), and a protection circuit (5). The protection circuit (5) is provided with a varistor circuit (18) and a diode circuit (8). The varistor circuit (18...  
WO/2014/143603A1
In some embodiments, a system includes multiple coils of a multi-phase machine in which the coils are each associated with a different phase. Associated with each coil is a protective element such that each protective element is associat...  
WO/2014/140359A1
An electrostatic discharge (ESD) protection device with a high holding voltage is disclosed including at least an ESD clamp coupled to a holding voltage tuning circuit. The ESD clamp may be coupled to the holding voltage tuning circuit t...  
WO/2014/136229A1
In order to obtain an electric power conversion device whereby equipment can be made more compact and cost less, and the time until restarting operation after an accident can be reduced, in a DC power transmission grid that connects a pl...  
WO/2014/135351A1
The invention relates to an overvoltage protection device with a short-circuit function for protecting installations and persons for low-voltage installations, wherein at least one overvoltage protection element and a thermally activatab...  
WO/2013/171186A3
The invention relates to a rail vehicle circuit arrangement, having at least one transformer (20) which, in a first operating mode, is electrically connected to a drive unit (28) and to a railway power supply system (12), and in a second...  
WO/2014/133750A1
A ground fault protection system (216) is disclosed. The ground fault protection system may include a controller (306) that is configured to receive signals representing a ground fault detection voltage and a DC link voltage of a machine...  
WO/2014/132067A1
A fault current limiter (FCL) has a core structure with a first and second magnetisable core members and an AC magnetomotive force source configured to generate a varying magnetic flux in at least a portion of the first and second magnet...  
WO/2014/131564A1
The invention relates to a disconnecting and switching circuit for the overvoltage protection comprising at least one dissipation element, further one thermal disconnecting point which is integrated in the electrical connection path of t...  
WO/2014/132066A1
A fault current limiter (FCL) has a core structure including first and second, spaced magnetisable core members; and an AC magnetomotive force source configured to generate a varying magnetic flux in at least a portion of the first and s...  
WO/2014/132396A1
The purpose of the invention is to obtain a power conversion device used in a DC power transmission system in which a plurality of power supply systems are connected therebetween by a DC line and interconnected with each other and being ...  
WO/2014/127580A1
An electrostatic protection circuit, a display device and an electrostatic protection method. The electrostatic protection circuit comprises a first switch transistor, a second switch transistor, a third switch transistor, a fourth switc...  
WO/2014/128697A1
There is provided a fault current limiter that comprises a magnetically saturable core. The FCL comprises a first DC coil wound around a first portion of the core, with the first DC coil being arranged to saturate at least part of the co...  
WO/2014/128999A1
The present invention relates to a current limiting device for limiting the amount of overcurrent generated, for example, when an accidental short circuit occurs in a power system. The current limiting device comprises: a current limitin...  
WO/2014/126006A1
A superconducting fault current limiter (10) is provided with superconducting elements (71, 72) that are in a superconducting state during electrification with a current value in a fixed range and in a normal conducting state during elec...  
WO/2014/126703A1
A protection monitoring system is provided that includes a protection fault handler. The protection fault handler includes a protection fault indicator. The protection fault handler is configured to activate the protection fault indicato...  
WO/2014/121636A1
Provided is a resonant current limiter based on an insulator-metal phase change resistor. The resistor (RPC) made of an insulator-metallic phase change material is in parallel connection with a capacitor (C), and then is in series connec...  
WO/2014/120450A1
Aspects of the invention provide for an ESD protection device for an SST transmitter. In one embodiment, the ESD protection device includes: a primary ESD protection structure at an output of the SST transmitter; and an additional protec...  
WO/2014/117608A1
An apparatus (20) for breaking a current of a circuit (44) and a control method thereof. The apparatus (20) for breaking a current of a circuit (44) comprises a unidirectional direct current breaker (10) and a bridge branch circuit. The ...  
WO/2014/118316A1
A safety switching device (10) for failsafe switching on and off of a technical installation (11) has an input (24) for picking up an input signal and a failsafe control/evaluation unit (28) which processes the input signal and generates...  
WO/2014/113970A1
An apparatus for eliminating electrostatic charge from a mould, such as a wind turbine blade mould (2). The apparatus comprises heating wires (4) within the mould for heating a zone of a moulding surface of the mould (2), an electrical p...  
WO/2014/114516A1
The invention relates to a measuring system for continuously monitoring a high-voltage bushing. If measurements for monitoring are to be continuously performed at the measurement connection of a high-voltage bushing, the measurement conn...  
WO/2014/107995A1
A false-trigger-proof power supply clamping ESD protection circuit, comprising: an ESD impact detection component, a discharge transistor, a discharge transistor activation access, and a discharge transistor deactivation access. The circ...  
WO/2014/108360A1
The invention relates to a measurement arrangement (1, 22) for a rail potential in a DC railway system, wherein rails (10) of the DC railway system are connected to earth (2) by means of at least one switchable semiconductor element (32)...  
WO/2014/107854A1
A power grid current-limiting apparatus, a power grid current limiter, and a power grid current-limiting system. The power grid current-limiting apparatus comprises: a first current-limiting reactor (101), a first smart high-speed switch...  

Matches 701 - 750 out of 13,007