52results 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.

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.

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.

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.

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 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).

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.

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.

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.

A method is proposed for calculating a fault current between a grounded secondary side of a transformer and a switching device using an evaluation unit (ETU) of the switching device. This method is based on a switching device for switching and interrupting an AC power supply to a load, consisting of three phase conductors and a neutral conductor (N). The switching device includes identical sensors for measuring the phase currents and is configured to transmit corresponding measurement signals to an evaluation unit (ETU) of the switching device. It is also configured to receive measurement signals from a sensor located at the grounded secondary side of the transformer for measuring the current between the secondary side of the transformer and earth (PE) and transmitting these signals to the evaluation unit (ETU).In the inventive method, the measurement signals of the sensor arranged at the grounded secondary side of the transformer for measuring the current between the secondary side of the transformer and earth (PE) are adapted according to the measurement signals transmitted by the similar sensors for measuring the line currents, the measurement signals of the three line currents and the adapted measurement signal from the sensor arranged at the grounded secondary side of the transformer are added for a defined time and a fault current between the grounded secondary side of the transformer and the switching device is calculated for that time using the added measurement signals.

The invention relates to a surge protection system (1) with terminal blocks (R1,R2, ...) on a mounting rail (T), comprising • at least two terminal blocks (R1, R2) in an adjacent arrangement which have different potentials at at least one point in time during operation, • wherein a terminal block (R1) provides an equal-potential connection of several electrical conductors in a plane (E1) perpendicular to the mounting of a terminal block (R1, R2, ...) on a mounting rail (T), • a surge protection device (USE) adjacent to the terminal blocks (R1, R2), • wherein the surge protection device (USE) has bridging shafts (S1, S2, ...) in different bridging levels (E1, E2 ...) which are defined parallel to each other in mounting rail directions, • wherein the terminal blocks (R1, R2, ...) each have at least one bridging slot shared with the surge protection device (USE), • wherein the different potentials of the at least two terminal blocks (R1, R2, ...) are connected to the surge protection device (USE) in the direction of the mounting rail by means of at least one bridging device (BM) in order to protect a respective potential in the event of an overvoltage, • wherein for each terminal block (R1, R2, ...) at least one bridging device (BM) provides an electrical connection exclusively in at least one bridging level (E1, E2, ...).

The present invention relates to a bypass switch and, more specifically, to a bypass switch used in a super-high voltage direct current transmission sub-module. A bypass switch according to one embodiment of the present invention comprises: a case in which a hollow part is formed; a first bus bar coupled to the front end of the case; a second bus bar coupled to the rear end of the case; a fixing contact which is provided in the hollow part and which is connected to the first bus bar; a movable contact which is provided in the hollow part, and which is connected to the second bus bar so as to come into contact with or be separated from the fixing contact; an insulating cover which is coupled to the rear surface of the second bus bar, and which has an accommodation part therein; a movable part extension rod which is provided on the accommodation part and which is coupled to the movable contact; and an actuator which is provided on the rear part of the insulating cover, and which provides power for moving the movable part extension rod.

The invention provides an assembly guide of a current transformer. A housing is sized and shaped to receive a core of a current transformer, the housing having a plurality of grooves formed in an outer surface. The grooves are spaced apart according to a predetermined winding distribution pattern such that winding portions wound around the core and the housing are positioned in selected grooves of the housing according to the predetermined winding distribution pattern. The assembly guide also includes a snap-fit outer housing including a pin extending along a central axis of the housing. The pin is sized and shaped to fit in an opening in the core and is configured to hold a conductor in a predetermined position within the core opening.

To provide a relay in regard to a technical field of an electric device.SOLUTION: A relay contains a contact assembly. The contact assembly contains a movable contactor and a pair of fixing contact leading ends. The movable contactor is used for being contacted or separated to / from the pair of fixing contact leading ends. In at least one of sides where each fixing contact leading end and the movable contactor approach each other, an inner side contact part is provided, and a space between each fixing contact leading end and the movable contactor are only contacted. The inner side contact part is installed to the side where the pair of fixing contact leading ends approach each other, a contact position between each fixing contact leading end and the movable contactor approaches a contraction current region of a center of the movable contact as possible. Also, by concentrating it into the inner side of each fixing contact leading end, an electrically-driven repulsive power is reduced by miniaturizing the size of a concentration region, and a risk of an arc combustion due to a burst of each fixing contact leading end and the movable contactor is reduced to improve safety.SELECTED DRAWING: Figure 1

A current transformer for a ground fault circuit interrupter (GFCI) can include a core having a closed loop shape having a first side, a second side, and a core opening, and a sense coil wrapped around the core configured to magnetically couple to a plurality of conductors passing through the core opening. The current transformer can include a first magnetic shield disposed on the 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.

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.

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.

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 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.

The invention relates to an electric emergency switch device comprising a housing (1, 2), at least one electrically controllable pyrotechnic trigger (8, 9, 10), and at least two contact elements (3, 6) each having at least one contacting surface (6) located inside the housing and at least one contact lug (3) guided to the outside of the housing. The contacting surfaces (6) of all contact elements are at a distance from one another. An electrically conductive connection element (7) has a standby position and a self-locking insertion position, wherein the connection element (7) in the standby position does not touch any of the contacting surfaces (6) and in the insertion position contacts the contacting surfaces (6) of both contact elements, thus establishing an electrically conductive connection between the contact elements (3, 6). The connection element (7) is moved by the pyrotechnic trigger (8, 9, 10) from the standby position into the insertion position. A retaining part (11) holds the connection element (7) in the standby position and at a distance from the contact elements (3, 6) and isolated therefrom.