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WO/2002/043217A1 |
A plurality of varistors (7, 8, 9, 10) are connected in parallel in order to distribute the current to be derived to a plurality of varistors (7, 8, 9, 10). Since the UI characteristics of the individual varistors (7, 8, 9, 10) vary due ...
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WO/2002/041460A1 |
A surge-protected coaxial termination (20) includes a metallic outer body (22), a center conductor (36) extending through a central bore (24) of the outer body, and a spark gap (38) created therebetween to discharge high-voltage power su...
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WO/2002/037636A1 |
The invention relates to a disruption suppressor in a measuring interface consisting of two protection stages for the three phases and for the neutral. The configuration of the suppressor for each of the three phases and the neutral comp...
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WO/2002/033719A1 |
A switching device comprising at least two operating coils (21, 22, 41, 42) for controlling at least two magnetic circuits (51, 52), a control unit (35) which controls the voltage supplied to the operating coils, and individual demagneti...
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WO/2002/031941A1 |
The invention relates to a circuit configuration for monitoring and/or for regulating supply voltages. Said circuit enables at least two supply voltages (U¿12?) or (U¿22?) that are produced by means of two feed-ins (Q1, Q2) and that ar...
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WO/2002/031942A1 |
The invention relates to a current limiting arrangement for limiting a current in an electrical power system, which current limiting arrangement, comprises an induction winding (3), surrounding a magnetic flux circuit (2) comprising a fe...
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WO/2002/029954A1 |
An invention is fuse panel with electronic fuse for power delivery in a real estate, apartments or other operational places. The current fuse functions are adjusted by control. As an invention is as well an electronic fuse (5.1 ... 5.n) ...
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WO/2002/029950A2 |
An arrangement for protecting an element from electro-static discharge. A switch is provided to inhibit the flow of energy through the element in response to the control signal. In the illustrative embodiment, the switch is a transistor ...
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WO/2002/027888A1 |
The invention relates to a protective circuit which is used to limit voltage in a device which is to be protected, especially a consumer, comprising an upstream device for limiting voltage and current. The device to be protected is dispo...
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WO/2002/025734A2 |
A circuit for electrostatic discharge (ESD) protection of dual-voltage integrated circuit devices utilizes two cascoded P-channel field effect transistors (PFETs) and two timing networks to protect the integrated circuit devices from dam...
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WO/2002/023690A1 |
A large current watchdog circuit for a photodetector (12), the circuit including a current sensing device (52) responsive to current flowing through the photodetector (12), and a variable impedance transistor (50) responsive to the curre...
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WO/2002/017458A1 |
A malfunction of a ground fault interrupter due to a lightning surge is prevented, and a power source short circuit caused by a short-circuit damage of an arrester due to a high-level lightning surge is prevented. A contact (41), an over...
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WO/2002/017456A2 |
A protective relay is provided to protect circuitry against reverse battery polarity or load dump, wherein a relay coil is operatively connected to a contact switch and is fed by a reverse bias diode (which may be a Zener diode) such tha...
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WO/2002/015360A1 |
A predetermined electrode arrangement (1/1, 1/2. 1/3A, 1/6) comprising a plurality of shielded electrodes (213, 215) and a plurality of shielding electrodes (204, 214, 269A, 269B,) that together with other conductive (799, 206, 208, 207,...
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WO/2002/014736A1 |
The invention relates to a cryostat for electrical devices such as superconducting current limiters and electrical machines such as transformers, motors, generators and electrical magnets with a superconducting winding. A refrigerant at ...
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WO/2002/015361A1 |
The invention relates to an instant tripping device for short circuits in electrical DC and AC networks of surface and underwater vessels, especially combat vessels, and offshore installations. The aim of the invention is to improve a de...
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WO/2002/015355A2 |
The invention relates to a method and a device for carrying out the latter, for selectively identifying and localising high-ohm, single-pole earth faults in neutral-point compensated electric supply networks. According to the invention, ...
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WO/2002/015539A1 |
A filter system and method is disclosed, the filter system (300, 300x, 300y, 300z) being connected between a large-amplitude, high-frequency noise source (304) and a frequency-division multiplexed communications channel (312, 412). The l...
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WO/2002/015358A1 |
The aim of the invention is to provide a method that can be simply implemented for the reliable localisation of single-pole earth faults in a branch or a line section of a neutral-point compensated or insulated electric supply network, i...
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WO/2002/009129A1 |
The invention relates to a superconducting device (22) that comprises an inductive current limiter (28a, 29b) with an annular element (27a, 27b) produced from high-Tc superconducting material. The device is further provided with a soft-m...
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WO/2002/009253A1 |
System for surge protection of an object comprising a supply unit, which is connected to the secondary output of an external transformer. The secondary windings (1) of the external transformer are coupled in a star configuration, the sta...
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WO2000059094A9 |
A protection circuit for use with a charger (5) and a chargeable element (1), such as a rechargeable lithium ion battery, comprises a shunt regulator (2) having a threshold ON voltage coupled in parallel across the chargeable element, an...
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WO/2002/007284A1 |
The present invention relates to electrostatic discharge (ESD) protection and, more particularly, to methods and systems for improving response times of ESD triggering and clamping circuitry. An ESD protection circuit protects ESD circui...
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WO/2002/005400A1 |
A fault current limiter (600) of the bridge type used in an AC power transmission system has a superconducting coil (L) as a first path and a conventional conducting coil (Rb) as a second path connected in parallel to the first path. The...
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WO/2001/097353A1 |
The invention relates to an overcurrent protection circuit comprising an overcurrent trip (5) and a switching element (6). A switched current (I) passing through the switching element (6) can be detected by the overcurrent trip (5) and t...
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WO/2001/095049A1 |
The invention relates to a power supply comprising a storage capacitor (C) which can be charged with a rectified input current (U¿g?) by means of a current-limiting element (SBG, T¿l?) which is controlled by a drive circuit. The direct...
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WO/2001/089053A1 |
Disclosed is a semiconductor component comprising a power circuit breaker (503) to which a load (60) can be connected, in addition to a sense circuit (16) and an evaluation circuit (17) which are used to detect and evaluate the load curr...
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WO/2001/084687A2 |
A system for detecting ground faults in a compensated electric power distribution network includes the determination of zero sequence voltage (V¿0?) and zero sequence current (I¿0?) on a power line and calculating the zero sequence con...
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WO/2001/082439A1 |
The invention relates to an electronic circuit for supplying and protecting another consuming circuit against undesirably high electrical values. The supply circuit is formed with at least 2 independent monitoring circuits performing ind...
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WO/2001/082442A1 |
A digital instrumentation system has a power supply means (36) which supplies power to at least one instrument (3) located in a hazardous area (5). Also located in the hazardous area (5) is power limiting means (27) for limiting the powe...
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WO/2001/075910A1 |
An integrated overvoltage and overcurrent circuit protection device (10) for use in telecommunication circuits. The integrated protected circuit device combines an overcurrent device such as a fuse (402) and an overvoltage protection dev...
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WO/2001/076037A1 |
A circuit (200) for supplying power to an intrinsically safe load having an integrated current source feedback and current limiting element. The circuit (200) includes a power supply (PS) and output terminals (T1-T2) that connect the cir...
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WO/2001/067476A1 |
Apparatus and methods for protecting devices such as micro-switches (100) and micro-relays from adverse effects of electrostatic discharge (ESD). A protection device is provided that includes a two terminal switch (102, 104) that can be ...
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WO/2001/064304A1 |
A force reflection system (400) is described. A power outlet (408) is mounted to the building structure (402) and is connected to an electric power cable (404). A support frame (12) is located in a stationary relationship relative to the...
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WO/2001/063710A1 |
The invention relates to a pressure-resistant encapsulated air-gap arrangement for the draining off of damaging perturbances due to overvoltages, comprising at least two essentially opposing electrodes, arranged in a housing which is con...
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WO/2001/063721A1 |
The invention concerns a safety device positioned in series in an electric supply to interrupt the circuit, in the presence of voltage surge, it operates without using earth line. The apparatus operates in the following manner: any volta...
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WO/2001/059903A1 |
The invention concerns the field of low voltage (LV) secondary circuits connected on very high voltage (VHV), high voltage (HV) or medium voltage (MV) primary power networks for transporting electric power. More particularly, the inventi...
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WO/2001/046768A1 |
A voltage regulator for converting an input voltage (1V¿i?) into an output voltage (2V¿0?). The input voltage may be burdened with a ripple. The output voltage (2V¿O?) supplied by the voltage regulator is virtually free from ripple. T...
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WO/2001/041278A1 |
A power conditioning circuit for conditioning power supplied by a power source at a nominal frequency over line, neutral and ground conductors includes first, second and third stages. The first stage provides voltage suppression and incl...
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WO/2001/041272A1 |
The invention relates to an overvoltage protector magazine (10) used in telecommunications. Said overvoltage protector magazine can be mounted directly on a carrier system of the telecommunication element behind a zone of connection (12)...
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WO/2001/039347A1 |
The invention relates to a protective device against overpotential in the terminals (1) of electrical equipment (3) caused by switching operations. Said device can be connected to a power supply using at least one power cable (2). The de...
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WO/2001/037390A1 |
The invention relates to protective circuit breakers such as arrester disconnectors (10) or ground-fault circuit breakers (20) that comprise a current transformer (4, 14) through the primary winding(s) (4a, 14a) of which the current or c...
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WO/2001/031901A1 |
An overvoltage protector suitable for protecting conductors comprises first, second and third at least bipolar protection elements (132, 134, 136). A first electrode of each protection element is connected to a common node (138). A secon...
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WO/2001/029519A1 |
Meter electronics (20) for a Coriolis flowmeter (5) capable of being intrinsically safe. A signal conditioner (201) receives power from a power supply (230) in a host system (200) remote from the signal conditioner (201). Drive circuitry...
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WO/2001/026200A1 |
The invention relates to an undervoltage release which comprises an electromagnet (EM) for releasing a switching device and a driver circuit that supplies the current for a winding of the electromagnet and serves for producing a clocked ...
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WO/2001/022551A1 |
The invention concerns a device for protection against voltage surges in an electric power supply line. Said device is characterised in that it comprises at least two elements (1', 3), namely a Zener diode lightning arrestor (1') fast-bl...
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WO/2001/020744A1 |
A system that protects telecommunications equipment from AC power faults and voltage transients comprising (1) a high-energy foldback device between the current-carrying lines of a telephone system and ground; (2) a voltage clamping devi...
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WO/2001/020743A1 |
A protection circuit and module include a gas dissipation tube having a first element (2a) connected to a telephone tip input signal, a second element (2b) connected to a telephone ring input signal, and a third element (2c) connected to...
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WO/2001/018934A1 |
A method and apparatus for protecting electronic equipment coupled to a telephone line. The apparatus includes a heat coil (36) electrically coupled in series between the electronic equipment and the telephone line, and a positive temper...
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WO/2001/017088A1 |
The invention relates to a protective circuit for a series connection consisting of a power semi-conductor end stage and an inductive consumer, with which a freewheeling circuit consisting of a freewheeling diode and a series-connected p...
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