91results about "Protective switches" patented technology

Communication enabled circuit breakers and circuit breaker panels are described. Methods associated with such communication enabled circuit breakers and circuit breaker panels are also described. A circuit breaker panel may include a circuit breaker controller and one or more communication enabled circuit breakers. Two-way wireless communication is possible between the circuit breaker controller and the one or more communication enabled circuit breakers.

An electric circuit switching device includes a housing; an igniter configured to release a combustion gas upon actuation; a tubular space formed in the housing; a projectile having conductivity, including a base body positioned at a first position in the tubular space in an initial state, and configured to be projected in a predetermined projecting direction by energy of the combustion gas; and a pair of first conductor pieces provided inserted, in a spaced apart state, into the tubular space at a position closer to the projecting direction side than the first position. The projectile further includes a pair of protrusions protruding from the base body in the projecting direction. The pair of protrusions of the projectile projected upon actuation of the igniter respectively come into contact with the pair of first conductor pieces, switching the first electric circuit from an interrupted state to a conductive state.

High-speed locking device (123) comprising the following: - a first fixed contact piece (2) which is made of a conductive material; - a second fixed contact piece (3) which is made of a conductive material and is facing the first fixed contact piece (2) to form an arrangement; - a movable contact piece (4) with a tip made of a conductive material, wherein the movable contact piece (4) has a sliding guide area (4d) with a hollow hole in which the side opposite the tip is open at an inner area, and wherein the movable contact piece (4) is separated from the first fixed contact piece (2) and the second fixed contact piece (3) by a distance which is longer than the insulating distance in order to form an arrangement before the high-speed closing device is closed, and wherein the movable contact piece (4) inserts the tip between the first fixed contact piece (2) and the second fixed contact piece (3) as soon as the high-speed closing device is closed, and which electrically connects the first fixed contact piece (2) and the second fixed contact piece (3) to each other; - a vacuum housing (1) with a fixed guide area (1g), a vacuum area and an air space in which the vacuum area is kept in a decompression state, wherein the first fixed contact piece (2), the second fixed contact piece (3) and the movable contact piece (4) are arranged in the vacuum housing (1) and the fixed guide area (1g) is arranged in the air space; - a membrane (5) by means of which the airtightness of the vacuum space and the air space is maintained in a closing direction of the movable contact piece (4), and - wherein the movable contact piece (4) is inserted between the first fixed contact piece (2) and the second fixed contact piece (3) by means of a bending or bulging process of the membrane (5) and electrically connects the first fixed contact piece (2) with the second fixed contact piece (3), wherein the sliding guide area (4d) of the movable contact piece (4) is displaced along the fixed guide area (1g) of the vacuum housing (1).

A relay module and a relay control system. The relay module comprises a housing (1), two relay cores (2), a current transformer (3), two power supply terminals (5), and two load terminals (6). The two relay cores (2) are arranged within the housing (1); the two power supply terminals (5) and the two load terminals (6) are fixedly arranged on the housing (1); each relay core (2) having a magnetic circuit part (21) and a contact arrangement (22); the two power supply terminals (5) are each connected to the two load terminals (6) via the contact arrangements (22) of the two relay cores (2) to form two on-off control channels, the two on-off control channels being used to form a loop with a load connected to the two load terminals (6); the current transformer (3) is mounted in one of the on-off control channels.

The invention relates to an electric switching apparatus (1) having a housing (2) with a pressure chamber (3) in which a pyrotechnic trigger (4) is received, and to a piston assembly (5) arranged opposite the pyrotechnic trigger (4). The pressure chamber (3) is delimited by a piston surface (6) of the piston assembly in the housing (2), wherein by means of an activation of the pyrotechnic trigger a pressure (P) acts on the piston surface (6) and therefore the piston assembly (5) is moved. The electric switching apparatus (1) furthermore comprises a contact element (7) which is supported in the housing (2) in a standby position (8) and when the pyrotechnic trigger (4) is activated can be transferred together with the piston assembly (5) from the standby position (8) into an active position (9). The piston assembly (5) has at least one projection (10) which extends from the piston surface (6) in the direction of the pyrotechnic trigger (4) and has an active surface (11) facing said pyrotechnic trigger, wherein the projection (10) is provided to receive a first pressure pulse (I) at the active surface (11) and to transfer the first pressure pulse (I) to the contact element (7).

An efficiency monitor for monitoring the efficiency of power transmission by an inductive power outlet. The efficiency monitor includes an input power monitor, for measuring the input power delivered to the primary coil, and an output power monitor, for measuring the output power received by the secondary coil. The input and output powers are used by a processor to determine an index of power-loss. A circuit breaker may be used to disconnect the inductive power outlet in case of excessive power loss.

A current transformer for a ground fault circuit breaker (GFCI) may include an iron core having a closed loop shape, the iron core having a first side, a second side, and an iron core opening, and a sense coil wound around the iron core, the sense coil configured to be magnetically coupled to a plurality of conductors passing through the iron core opening. The current transformer may include a first magnetic shield disposed on a first side of the core over the sense coil, and a second magnetic shield disposed on a second side of the core over the sense coil.

The present invention uses a safe temperature coefficient and an alarm cutoff temperature coefficient, set in advance for each heat resistance class classified according to the heat resistance characteristics of insulating materials used in monitored transformers deployed in respective electrical circuits going from a power supply to a plurality of loads, to determine whether power can continue to be supplied through the monitored transformers, continues issuing an alarm to a person in charge when necessary, and cuts off the power supply when necessary. The present invention is deployed in a building in which the transformers are deployed. When an alarm is issued by a fire alarm that senses smoke and / or heat from a fire and issues an alarm, the present invention is deployed to the building or to the load deployed in an area in which the fire alarm issuing the alarm is deployed, cuts off the power supply to the load, and prevents electrical accidents or the like of secondary disasters caused by short circuits, sparks, tracking, or the like in a low-voltage distribution board, a distribution board, a control board, and a trunk line, wiring, terminal electric equipment, terminal load equipment, or the like of a system caused by the occurrence of a fire.

A short-circuiter device (1) is proposed that comprises a first electrical contact body (10) and a spaced-apart second electrical contact body (20). A contact element (30) able to move between a disconnected position and a closed position is furthermore included, which does not provide an electrically conductive connection between the first and the second electrical contact body (10, 20) in the disconnected position and connects the first and second electrical contact body (10, 20) to one another in an electrically conductive manner in the closed position. A drive device (40) is also included, which, when triggered, moves the movable contact element (30) from the second electrical contact body (20) in the direction of the first electrical contact body (10), from the disconnected position into the closed position. The movable contact element (30) comprises an insulation layer (50), which is positioned on an end region (35), facing the first contact body (10), of the movable contact element (30) and / or on a surface region, facing the end region (35) of the movable contact element (30), of the first electrical contact body (10).

The invention relates to an electrical connection switching member having at least two electrically conductive contact elements and an electrically conductive contact piece for connecting the contact elements, wherein the contact piece is movable by means of a pyrotechnic drive along a movement path, and, as a result, the connection switching member can be changed from an electrically disconnected state to an electrically connected state, wherein the contact piece is designed so that the contact piece in the disconnected state does not electrically connect the contact elements and in the connected state electrically connects the contact elements, wherein the contact piece or the contact elements have at least one penetrating body, which is designed so that, during the change from the electrically disconnected state into the electrically connected state, the penetrating body penetrates into the contact piece or the contact elements by cutting or piercing. The present invention also relates to the use of the connection switching member according to the invention for short-circuiting a circuit on a fuel cell.

Provided is a system for preemptively preventing the occurrence of an electric accident or the like that leads to a fire or the like in an electric circuit configuration in which a power supply side electric circuit from a power supply side and a load side electric circuit directed to a load are electrically connected via various electric devices or the like. The system preemptively prevents the occurrence of an accident resulting in damage to various electric / electrical apparatuses / devices that are the load to which the load side electric circuit is connected. The system preemptively prevents the occurrence of an electric accident or the like due to short-circuiting, sparking, tracking, or the like of a low-voltage switchboard, a distribution board, a control board, a trunk line of a system, wiring, terminal electric equipment, terminal load equipment, and the like.

A system may include a device under test, a body having a plurality of conductors, a rotating section, a probe associated with the rotating section, the probe configured to receive at least a portion of one or more of the plurality of conductors, and a nest having at least one terminal, the nest is configured to be coupled to a device under test and to allow at least a portion of the probe to pass through an opening of the device under test.

A device for supplying electrical energy via a vehicle's power supply network (10) is described. The device includes several electronic fuses (22a, 22b, 24a, 24b, 26a, 26b, 26c). All electronic fuses (22a, 22b, 24a, 24b, 26a, 26b, 26c), or parts thereof, are connected for rapid communication via one or more event signaling lines (38, 42, 44) to enable a faster, predefined response than a higher-level energy management unit (32) of the power supply network (10) in the event of faults in the power supply network (10) or in the consumers (14, 16, 18, 20).

The invention relates to an electrical short-circuiting device (10) having a fixed and a movable contact piece (12, 14), the contact pieces (12, 14) being distanced from one another in a basic position and being electrically conductively connected to one another in a short-circuit position, having a drive (16) for transferring the movable contact piece (14) from the basic position into the short-circuit position, and having a trigger device (18) for triggering the drive (16). According to the invention, the trigger device (18) comprises an electrically driven actuator (24) for the triggering. The invention further relates to a converter which comprises at least one short-circuiting device (10) of this kind. The invention further relates to a corresponding method for short-circuiting contact pieces (12, 14).

The invention relates to a short-circuiting device (100, 200) for use in low-voltage systems for the protection of property and persons, comprising a switching device (10); - a first and a second fixed contact electrode (2, 3), and means for supplying current which are connected to the first and to the second contact electrode (2, 3); - a movable contact electrode (4) which is in electrical contact with the first fixed contact electrode (2) and is under a mechanical prestress with respect to the second fixed contact electrode (3) and is designed to carry out a relative movement to the second fixed contact electrode (3) in the event of a short circuit with the aid of spring force; - a sacrificial element (5) as a movement block for the movable contact electrode (4), which is arranged in a tensile manner between the first fixed contact electrode (2) and the movable contact electrode (4) or in a compressive manner between the movable contact electrode (4) and the second fixed contact electrode (3); - an electrical connection between the sacrificial element (5) and the switching device (10) on the one hand and one of the fixed contact electrodes (2, 3) on the other hand, whereby a current-flow-induced thermal deformation or destruction of the sacrificial element (5) can be brought about in a targeted manner, wherein the current-flow-induced thermal deformation of the sacrificial element (5) can be monitored and a degree of thermal deformation can be deduced.

Provided is a system for preemptively preventing the occurrence of an electric accident or the like that leads to a fire or the like in an electric circuit configuration in which a power supply side electric circuit from a power supply side and a load side electric circuit directed to a load are electrically connected via various electric devices or the like. The system preemptively prevents the occurrence of an accident resulting in damage to various electric / electrical apparatuses / devices that are the load to which the load side electric circuit is connected. The system preemptively prevents the occurrence of an electric accident or the like due to short-circuiting, sparking, tracking, or the like of a low-voltage switchboard, a distribution board, a control board, a trunk line of a system, wiring, terminal electric equipment, terminal load equipment, and the like.

To provide a detachment device in which detachment force generated by moving a movable iron piece toward a fixed iron piece is high, a circuit breaker, and a distribution board.SOLUTION: A detachment device 1 includes: a first detachment unit 1A having a first fixed iron piece 11A, a first movable iron piece 12A, and a first push-in unit 14A, and a second detachment unit 1B having a second fixed iron piece 11B, a second movable iron piece 12B, and a second push-in unit 14B. When abnormality occurs, the first push-in unit 14A interlocks with the first movable iron piece 12A moving toward the first fixed iron piece 11A and pushes in a first latch portion 3A toward a first non-latch position. When abnormality occurs, the second push-in portion 14B interlocks with the second movable iron piece 12B moving toward the second fixed iron piece 11B and pushes in the second latch portion 3B toward a second non-latch position.SELECTED DRAWING: Figure 1

Method and system for screening a device under test. A nest is configured for coupling to a device under test (DUT) and for receiving an output signal from the DUT during screening. A loop formed in an external conductor is positioned in proximity to the DUT. A test module compares the output signal of the DUT when the external conductor is not energized to the output signal of the DUT when the external conductor is energized and generating a magnetic field at the loop. The test module screens the DUT for a susceptibility to magnetic wrap-up effects based on the comparison.

The invention discloses a shielding type current transformer with a magnetic conductive shielding piece. The shield includes a magnetically conductive cup-shaped shell sized and shaped to receive a core and a winding of a current transformer and a magnetically conductive gasket-shaped cover for closing the cup-shaped shell. The shield is configured to shield the core from magnetic field lines generated outside the shield.

A device (1) for interrupting an electrical current comprises a first terminal (11) and a second terminal (12) adapted to electrically connect two sections (100, 200) of an electrical power system, the device comprising a circuit breaker module (10) adapted to interrupt the electrical current. The circuit breaker module (10) is arranged between the first terminal (11) and the second terminal (12), and a first current path is formed between the first terminal (11) and the second terminal (12). A second current path is formed between the first terminal (11) and the second terminal (12) by providing a bypass device (50) connected in parallel with the first current path, where the bypass device (50) comprises a switch, preferably a mechanical switch, the fault circuit breaker module does not interfere with the operation of the apparatus.

A shielded current transformer having a magnetically permeable shield. The shield includes a magnetically permeable cup-shaped shell that is sized and shaped to receive a core and windings of a current transformer and a magnetically permeable washer-shaped cap for closing the cup-shaped shell. The shield is configured to shield the core from magnetic field lines generated external to the shield.

An assembly guide for a current transformer. A shell that is sized and shaped to receive a core of a current transformer has a plurality of grooves formed in an outer surface. The grooves are spaced apart in accordance with a predetermined winding distribution pattern such that portions of a winding wrapped around the core and the shell are positioned in selected grooves of the shell in accordance with the predetermined winding distribution pattern. The assembly guide also includes a snap-fit housing that includes a prong extending along a central axis of the housing. The prong is sized and shaped to fit in an opening in the core and configured for maintaining conductors in predetermined positions within the core opening.

An electric circuit switching device includes a housing; an igniter configured to release a combustion gas upon actuation; a tubular space formed in the housing; a projectile having conductivity and positioned at a predetermined first position in the tubular space in an initial state; a piston fixed to the projectile and disposed in the tubular space interposedly between the igniter and the projectile, and configured to be projected in a predetermined projecting direction by energy of the combustion gas; and a pair of first conductor pieces provided inserted, in a spaced apart state, into the tubular space at a position closer to the projecting direction side than the first position. The projectile projected integrally with the piston upon actuation of the igniter comes into contact with each of the pair of first conductor pieces, switching the first electric circuit from an interrupted state to a conductive state.

An object of the present disclosure is to provide a switchgear that reduces a cost of periodic replacement of a drive unit and ensures reliability. A switchgear of the present disclosure includes a fixed electrode, a movable electrode provided to face the fixed electrode, the movable electrode being contactable with and separable from the fixed electrode, a piston provided opposite to the fixed electrode to drive the movable electrode via a movable shaft connected to the movable electrode, a container to accommodate the piston, and an arc generation mechanism bridging including metal and provided in the container at a position opposite to the fixed electrode, the arc generation mechanism bridging a terminal unit connected to an external circuit, the arc generation mechanism bridging opening a circuit with the terminal unit when energized to generate an arc at an opened portion.

A magnetic shielding system is provided for a Differential Current Transformer to provide shielding at multiple locations for a circuit braker. It comprises an outer shield being cylindrically-shaped and closely fitting and an inner shield being closely fitting over four conductor cables that pass through the Differential Current Transformer. An inside diameter of the inner shield is less than 1.5 times the diameter of the smallest circle that can enclose the four conductor cables that pass through the Differential Current Transformer. In an axial direction, the magnetic shielding system comprises multiple layers of flat, washer-shaped parts in which at least one layer on top and one layer on bottom is of magnetic shielding material. Magnetic shielding is provided at the multiple locations using two or more different classes of materials.

The invention relates to a distribution box (10) for power distribution in a network (12), with at least one input terminal (14) which can be connected to a public network (16), and with an output terminal (18) which can be connected to at least one electrical consumer in the network (12), wherein the distribution box (10) has a power distribution bus (20) which is connected to a modular input module as input terminal (14), wherein at least one modular output module as output terminal (18) is connected to the power distribution bus (20), so that power can be distributed from the modular input module via the power distribution bus (20) to the modular output module.

A system may include a device under test, a body having a plurality of conductors, a rotation section, a probe associated with the rotation section, the probe configured to house at least a portion of one or more of the plurality of conductors, and a nest having at least one terminal, the nest configured to couple to the device under test and to permit at least a portion of the probe to pass through an opening of the device under test.