Bender Gmbh & Co Kg

Oliver Schaefer

Dieter Hackl

Karl Schepp

Burkhard Macht

Winfried Moell

Eckhard Broeckmann

Pascal Becker

Carsten Hartmann

Frank Mehling

Matthias Becker

Dirk Pieler

Torsten Mager

Manfred Geiss

Steffen Kreuder

Helmut Becker

Michael Prinz-Weinel

A carrier-rail bus assembly including a number of n mechanically contiguous bus-circuit-plate sections electrically connected via bus-circuit paths and installed in a carrier rail, an electronic control unit being configured such that it detects whether an apparatus is inserted in an installation position i, respective installation position i being allotted a bus address, which is assigned to the apparatus inserted on the carrier rail on the respective bus-circuit-plate section in respective installation position i. A related method for assigning a bus address is also disclosed.

Carrier-rail bus assembly with automatic bus addressing

Methods and devices for insulation monitoring of an ungrounded IT power supply system having at least two phase conductors includes determining an insulation resistance separately for each phase conductor using a separate response value. In one embodiment of the invention, relevant current and voltage distributions are calculated. In another embodiment, a change time window is set within which a second response value is activated. In yet another embodiment, an option of shutting down/continuing operation of the IT power supply system is offered.

Methods and devices for selective insulation monitoring in ungrounded Isol&#xe9; Terre (IT) power supply systems

A circuit arrangement () having an active measuring voltage (U) for determining an insulation resistance (R) or a complex-valued insulation impedance (Z) of an ungrounded power supply system () against ground potential (PE), the circuit arrangement () having a measuring path () which runs between an active conductor (L, L) of the power supply system () and the ground potential (PE) and includes a measuring-voltage generator (V) for generating the measuring voltage (U), a measuring resistance (R) for capturing a measured voltage (U) and a coupling resistance (R), the circuit arrangement () having a signal evaluation circuit () which includes a signal input for evaluating the measured voltage (U) and a ground connection (GND). The ground connection (GND) is connected to a ground potential (PE).

Circuit arrangement having an active measuring voltage for determining an insulation resistance against ground potential in an ungrounded power supply system

A method and device for determining a division of a total insulation resistance and of a total system leakage capacitance in an ungrounded power supply system. The basic idea is to determine how the total insulation resistance is divided into partial insulation resistances and how the total system leakage capacitance is divided into partial system leakage capacitances between the active conductors of the ungrounded power supply system from displacement voltages measured between each of the active conductors of the ungrounded power supply system based on values determined in advance for the total insulation resistance and for the total system leakage capacitance of the ungrounded power supply system. By evaluating the displacement voltages in terms of their changes in amplitude, their frequency and their phasing, conclusions can be drawn as to the division of the total insulation resistance and of the total system leakage capacitance between the individual active conductors.

Method and device for determining the division of a total insulation resistance and the division of a total system leakage capacitance in an ungrounded power supply system

The invention relates to circuit arrangements for reducing potential-induced degradation in photovoltaic modules of a photovoltaic generator, said circuit arrangements comprising an insulation monitoring device for a temporally continuous insulation monitoring of the photovoltaic generator. Furthermore, the invention relates to a photovoltaic system comprising a circuit arrangement for reducing potential-induced degradation in photovoltaic modules, said photovoltaic system comprising a photovoltaic generator and an insulation monitoring device for a temporally continuous insulation monitoring of the photovoltaic generator. Different solutions are proposed which enable reducing potential-induced degradation while simultaneously continuously monitoring insulations. The circuit arrangements according to the invention rest upon an insulation monitoring device interacting with measures based circuit technology for influencing potentials in a photovoltaic module.

Circuit arrangements for reducing potential-induced degradation in photovoltaic modules

Housing for electric conductors

Methods and devices for selective insulation monitoring in underground IT power supply systems

A pallet understructure, in particular for transport and storage containers for liquids, which are equipped with an inner container made of plastic, with a closable filling neck and a draining neck for connecting a tapping armature, wherein the understructure has an outer jacket made of a metal grid or sheet metal, and a bottom () for supporting the inner container, corner feet and central feet arranged between the corner feet, as well as a bottom cross member (), wherein at least the outer jacket and the bottom cross member are attached to at least two central feet, wherein the respective central foot, the outer jacket and the bottom cross member are coupled in a form-fitting fashion with the aid of a screw (), wherein there is a bracket (), which reaches around the bottom cross member () and around a peripheral edge of the outer jacket, wherein the screw () penetrates legs () of the bracket.

Method and measurement arrangement for monitoring a production process of a modularly set-up voltage source

The invention relates to an electric circuit arrangement for the input protection circuit of a switching power supply, having a surge protection circuit, which is contacted with a supply voltage on an input side and to which a current-compensated choke is connected as a suppression component, said current-compensated choke being connected to a rectifier circuit comprising an energy storage means on an output side. Via modifications to the circuit technology, such as using two varistors as surge protections, and by using suitable switching elements, such as silicon diodes as rectifier elements and ceramic capacitors as an energy storage means, the input protection circuit is designed such that the requirements, which an expanded input voltage range demands of a surge circuit, are fulfilled. Furthermore, the invention relates to a switching power supply having an electric circuit arrangement according to the invention for the input protection circuit.

Electric circuit arrangement for the input protection circuit of a switching power supply and a switching power supply

A method for insulation fault location in a branched, ungrounded power supply system includes determining an insulation fault position being carried out in combination with evaluating information for identifying a faulty cable outlet according to the method of time-domain reflectometry. Furthermore, the invention relates to a method for insulation fault identification in a branched power supply system and for status monitoring of the branched power supply system, an image of all reflection positions on the power supply system being carried out based on a method of time-domain reflectometry. Moreover, the invention relates to a device for insulation fault location in a branched, ungrounded power supply system having the function units insulation fault test apparatus and insulation fault evaluation device having a measuring current transformer, the device comprising a time-domain reflectometer having a controller so as to implement the method according to the invention.

Method and device for extended insulation fault location in an ungrounded power supply system and method for status monitoring of the power supply system

The invention relates to a method for insulation fault location in an IT power supply system, comprising the process steps: feeding of a test current, detecting of a test current portion in a branch of the IT power supply system and evaluating the detected test current portion. Furthermore, the invention relates to an insulation fault location for an IT power supply system having a test current generator for supplying a test current, having a test current sensor for detecting a test current portion in a branch of an IT power supply system and having an analyzing device for evaluating the detected test current portion. According to the invention, the insulation fault location system comprises a computing unit for adaptively determining a test current parameter of the test current depending on an electric system parameter of the IT power supply system.

Method and device for insulation fault location having an adaptive test current determination

The invention relates to a method for insulation fault location as well as to an insulation fault location system for an ungrounded power supply system. The main idea of the present invention rests upon the idea that while preserving a predetermined maximally admissible test current amplitude, a test current pulse duration of a test current is adaptively set such that all interfering values are eliminated in a captured differential current, in particular the leakage currents arising in consequence of large supply leakage capacitances. Should a test of the value of the final value of the differential current reveal that a test current threshold value has been exceeded, this exceedance can be seen as an indicator that the respective conductor section is therefore in the fault circuit.

Method for insulation fault location and an insulation fault location system for an ungrounded power supply system

The invention relates to an insulation monitoring device and to a method for conforming-to-standards monitoring of an insulation resistance of an ungrounded single-phase or multi-phase power supply system having at least two active conductors. According to the invention, the insulation monitoring device comprises a voltage monitoring circuit for permanently registering the conductor voltage to ground potential for at least one active conductor. If an excess voltage is detected on an active conductor, the voltage monitoring circuit generates a shut-down signal so as to shut down the power supply system.

Insulation monitoring device having voltage monitoring and underlying method

The invention relates to a method and to a device for shutting down an installation part provided with connected equipment in an ungrounded power supply system in case of an insulation fault in a direct-current circuit connected to the installation part to be shut down. The invention is based on first determining the insulation resistance of the IT power supply system and measuring the displacement direct voltage present in the IT power supply system and then determining by combined evaluation of the measured results if there is a risk of an disruptive influence on the operating behavior of the connected equipment due to the displacement direct voltage occurring during the duration of a predeterminable time interval. If a disruptive influence is to be expected, the installation part exhibiting the insulation fault is immediately shut down together with the direct-current circuit and the equipment connected thereto.

Method and device for shutting down an installation part exhibiting an insulation fault in an ungrounded power supply system

The invention relates to a method and to devices for extended insulation-fault search in an IT power supply system using a multifunctional test current, wherein, selectively and depending on the application, the test current functions as a voltage compensation current so as to compensate a voltage increase in an active conductor of the IT power supply system, as a tripping current so as to trip a residual current protection device arranged in a subsystem of the IT power supply system and/or as a leakage-capacitance compensation current so as to compensate a capacitive leakage current. The test current can fulfil more than one of the cited functions simultaneously.

Growing community of inventors

Gruenberg, Germany

Oliver Schaefer