29results about "Protective switches" patented technology

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 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).

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.

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 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.

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 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 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.

Wireless communication enabled circuit breakers are described. Methods associated with such wireless communication enabled circuit breakers are also described. The wireless communication enabled circuit breakers may controlled by a remote entity. The remote entity may wirelessly case the wireless communication enabled circuit breakers to trip.

Wireless communication enabled circuit breakers are described. Methods associated with such wireless communication enabled circuit breakers are also described. The wireless communication enabled circuit breakers may controlled by a remote entity. The remote entity may wirelessly case the wireless communication enabled circuit breakers to trip.

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 present invention relates to an electrically normally open contact comprising: a first electrical connection portion (4a) and a second electrical connection portion (4b); a first contact element (6a) electrically connected to the first connection portion; a second contact element (6b) electrically connected to the second connection portion; a connecting element (8) by means of which an electrical connection can be established between the two contact elements; and a driver (10) for realizing relative movement between the contact elements and the connecting element, wherein the connecting element (8) or the contact elements (6a, 6b) are at least partially formed of a conductive porous metal.

The invention relates to a switch for interrupting a circuit in which two direct voltage sources (S1, S2) and at least one load (L) are integrated and interconnected with one another, wherein the object of the invention is to interrupt the circuit quickly and effectively when required, such that after the circuit has been interrupted, potential contact between the load and any of the voltage sources must be eliminated, and in addition potential interaction between the load and any other load or circuit that can be electrically interconnected to the load must also be eliminated. To this end, in the region between the two voltage sources (S1, S2) and the load (L), a main electrical conductor (10) is bridged by an auxiliary electrical conductor (11), which is electrically connected in parallel to the voltage sources (S1, S2), to the load (L), and before activation of the switch, i.e. during normal operation of the circuit (1), is interrupted by a gap (G) and thus cannot be electrically penetrated.

An arrangement for interrupting current (1 ) comprises a first and a second terminal (11,12) being adapted to electrically connect two sections (100,200) of a power system, the arrangement comprising a circuit breaker module (10) adapted to interrupt current The circuit breaker module (10) is provided between the first and second terminals (11, 12), forming a first current path between the first and second terminals (11, 12). By providing a bypass device (50) connected in parallel with the first current path, thereby forming a second current path between the first and second terminals (11, 12), wherein the bypass device (50) comprises a switch, preferably a mechanical switch, a faulty circuit breaker module does not impede the operation of the arrangement.

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.

The invention relates to a short-circuiting element (10) of an electrochemical cell, which is assigned to a second, redundant monitoring circuit of the electrochemical cell in addition to a first monitoring circuit. The short-circuiting element (10) is in a low-resistance activated state (52) through which a heat-generating electric current flows. In the low-resistance activated state (52) of the short-circuiting element (10), a low-melting-point substrate (22) stored therein creates an electrically conductive connection (48) between a first and a second current-carrying electrode (26, 28). Furthermore, the invention relates to the use of the short-circuiting element (10) for preventing overvoltages in electrochemical cells, in particular battery cells for mobile or stationary applications.

The present disclosure provides a relay module and a relay control system, the relay module comprising a case (1), two relay core mechanisms (2), one current transformer (3), two power terminals (5), and two load terminals (6), the two relay core mechanisms (2) are provided within the case (1), the two power terminals (5) and the two load terminals (6) are fixed to the case (1), the relay core mechanism (2) comprises a magnetic circuit portion (21) and a contact assembly (22), the two power terminals (5) are connected to the two load terminals (6) via the contact assemblies (22) of the two relay core mechanisms (2), respectively, to form two on-off control paths, the two on-off control paths are configured to form one circuit with the loads connected to the two load terminals (6), and the current transformer (3) is attached to one on-off control path.

Methods and systems for screening devices under test. The base 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 the outer conductor is positioned proximate to the DUT. The test module compares an output signal of the DUT when the outer conductor is not energized with an output signal of the DUT when the outer conductor is energized and a magnetic field is generated at the loop. The test module screens for the DUT's susceptibility to the magnetic wrapping effect based on the comparison.

A high-speed introduction device (1) includes a first electrode (2), a second electrode (3), and a discharge induction mechanism (5). The second electrode (3) is spaced apart from the first electrode (2). The discharge induction mechanism (5) induces a discharge between the first electrode (2) and the second electrode (3). The discharge induction mechanism (5) includes a voltage generation element (35) and a non-electrical energy application unit (7) to apply non-electrical energy to the voltage generation element (35).

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.