Future Systems Besitz Gmbh

Woehner Gmbh & Co. Kg Elektrotechnische Systeme

Woehner Besitz Gmbh

Wöhner Gmbh & Co. Kg Elektrotechnische Systeme

Wohner Besitz Gmbh

Hubert Lenker

Philipp Steinberger

Joram Masel

Peter Spiel

Bernhard Först

Daniel Steiner

Alexander Scholz

A method for detection of a fuse failure of a protective fuse used to protect an associated load against overcurrent and/or against overload includes the steps of: measuring electrical current flowing through the protective fuse in a current path to the load by means of a current sensor element; determining one or more failure indicators adapted to indicate a possible failure of the protected fuse on the basis of the measured electrical current; and detecting automatically a failure of the protective fuse if the determined at least one failure indicator indicates a possible failure of the protective fuse and if the electrical current stopped to flow through the protective fuse or is below a predefined current threshold value.

Method and apparatus for detection of a fuse failure

A load protection and control apparatus () for protecting and controlling an electrical load connected to the load protection and control apparatus () comprising an overcurrent protection circuit (A) having a power switch () through which the electrical load receives an electrical load current (I) and having a sensor component () connected in series with the power switch () and adapted to generate directly a voltage drop (ΔU) corresponding to the current rise speed of the electrical load current (I) flowing from an input terminal () of the load protection and control apparatus () via the sensor component () and the power switch () to the output terminal () and having a driver circuit () adapted to detect an occurring overcurrent depending on the voltage drop (ΔU) generated by the sensor component () and/or depending on a voltage drop (ΔU) along the power switch () and adapted to switch off said power switch () upon detection of an overcurrent within a switch-off period of less than one millisecond; and/or comprising a power supply control circuit () having a sensor component () adapted to measure at the input terminal () a supply voltage (U) notified to a control unit () of the load protection and control apparatus () adapted to control an electrical power supplied to the electrical load, wherein each input terminal () is configured to establish an electrical connection with a busbar () of a busbar system or with a current carrying wire.

Apparatus for protecting and controlling an electrical load

An apparatus for switching and/or protection of a load connected to said apparatus, said apparatus () comprising: a power switch () through which the connected load receives an electrical current; a sensor component () connected in series with said power switch () and adapted to generate directly an electrical voltage drop corresponding to a current rise speed of the electrical current flowing via the sensor component () and via the power switch () to said load; and a driver circuit () adapted to detect an occurring overcurrent depending on a voltage drop generated by said sensor component () with or without a voltage drop along the power switch () and to switch off said power switch () upon detection of an overcurrent within a switch-off period to protect said power switch () and said load.

Apparatus for switching and protection of a load based on current rise speed

A touch protected busbar system (TP-BSYS) comprising at least one hybrid busbar () having a current-carrying rail profile () and a contact-receiving rail profile () providing contact openings () configured to receive protruding electrical contacts () of electrical devices (ED-A) to be connected to said touch protected busbar system (TP-BSYS), wherein the at least one hybrid busbar () is at least partially covered by electrical isolating touch protection elements (TPE) of said touch protected busbar system (TP-BSYS) and/or at least partially encapsulated by an electrical isolating layer.

Touch protected busbar system

A hybrid load protection apparatus () comprises a primary power supply path (A) between input terminal and output terminals () and a controllable mechanical switch (A) connected in series with a primary coil (A-) coupled inductively to a secondary coil (A-) providing a voltage, U, corresponding to a current rise speed of the electrical current flowing through the primary path (A). The voltage, U, is applied directly to a driver input (IN) of a first driver circuit (A) to trigger automatically a switch-off of the mechanical switch (A) within a first switch-off period (&#x394;t) to interrupt the primary power supply path (A). A secondary power supply path (B) is provided in parallel to the primary path (A) and having a further coil (B) connected in series with a semiconductor power switch (B). wherein a second driver circuit (B) associated with the secondary path (B) detects an increasing electrical current, I, flowing through the secondary path (B) caused by the interruption of the primary current path (A) on the basis of a voltage drop (&#x394;U) generated by the further coil (B) and a non-linear voltage drop (&#x394;U) along the semiconductor power switch (B) applied as a sum voltage (U) directly to a driver input (DESAT) at a high voltage side of the second analog driver circuit (B) to trigger automatically a switch-off of the semiconductor power switch (B) within a second switch-off period (&#x394;t) to interrupt the secondary power supply path (B).

Method and apparatus for protecting a load against an overcurrent

A hybrid busbar () for a busbar system, said hybrid busbar () comprising a current carrying rail profile () adapted to carry an electrical current with a predefined high current amplitude and at least one contact receiving rail profile () having a plurality of equally spaced contact openings () configured to receive protruding electrical contacts () of electrical devices (ED-A) to be connected to said busbar system, wherein the current carrying rail profile () and the contact receiving rail profile () are connected with each other to form said hybrid busbar () providing at least one bounding geometry with a rectangular cross section (CS), wherein the hybrid busbar () can be engaged from behind by hook-shaped mounting latches () of electrical devices (ED-B) to be connected to said busbar system.

Hybrid busbar for a busbar system

Device for operating an electric motor, comprising a detection unit for detecting zero-crossings and phase angles of applied phase-shifted sinusoidal voltage phases of a multi-phase power supply network; and a switching unit for connecting half-waves of the applied sinusoidal voltage phases through by means of semiconductor switches in accordance with switching patterns applied to the semiconductor switches, said patterns being synchronised with the detected phase angles and zero-crossings, to generate phase-shifted quasi-sinusoidal voltage phases which are applied directly to the electric motor.

Method and device for operating an electric motor

A circuit breaker includes a current entry which conducts an electrical current via a wound coil conductor strip of a first coil to a first fixed contact, and includes a contact rocker which can be moved between two switching positions. The contact rocker includes mutually connected contact limbs. A first switching position of the contact rocker, electrically connects the first fixed contact with a second fixed contact which is connected via a wound coil conductor strip of a second coil to a current exit for dissipating an electrical current flowing through the contact limbs of the contact rocker and the coil conductor strips of the coils to a current exit of the circuit breaker. A high electrical current which flows through the wound coil conductor strips of the coils and through the contact limbs of the contact rocker produces a magnetic field which generates a switching force which moves the contact rocker from the first switching position into a second switching position in which the two fixed contacts are electrically separated to interrupt the electrical current.

Circuit breaker

Switching device () for operating at least one load, comprising at least one switching unit (), which switches a tapped current phase (L) to a load (---) connectable to the switching unit () to supply said load with current and which has a measurement unit (C;C;C) which measures a current phase progression of the at least one current phase (L); a local control unit (), which after receiving a control command from an external control system () actuates a semiconductor switch (B;B;B) of the switching unit () in such a way that the semiconductor switch (B;B;B) switches at a zero of the current phase (L) measured by the measurement unit (C;C;C), and a local monitoring unit (), which evaluates the current phase progression, measured by the measurement unit (C;C;C), of the at least one current phase (L) to detect an operational deviation from a normal current supply to the associated load (---) connected to the switching unit (), and reports any detected operational deviation.

Switching device for operating at least one load

Busbar adapter comprising a lower adapter part, the lower adapter part comprising a base having recesses for receiving connection bars which can be electrically contacted with busbars, the number of connection bars per phase which can be received in the recesses of the lower adapter part being variable, and the connection bars being electrically connectable to at least one electrical device, which can be fastened to an upper adapter part of the busbar adapter.

Growing community of inventors

Sonneberg, Germany

Hubert Lenker