Moeller Gebaudeautomation Gmbh

Eaton Corporation

Eaton Intelligent Power Limited

Eaton Industries (austria) Gmbh

Eaton Industries Gmbh

Georg Ritzinger

Michael Bartonek

Gerhard Dobusch

Rainer Meisel

Michael Koch

Roman Kolm

Hermann Haider

Klaus-Dieter Kersten

A residual current circuit breaker has a summation current transformer that has primary windings as well as a secondary and a tertiary winding, the secondary winding forming a circuit with an electronic trigger unit that is independent of the network voltage, and the tertiary winding forming a circuit with an electronic trigger unit that is dependent on the network voltage. The residual current circuit breaker may have an electronic control unit designed to actuate a switch upon predefinable actuation by the network voltage-dependent electronic trigger unit, and the switch, when in the actuated state, may interrupt contact of the secondary winding with the network voltage-independent electronic trigger unit and establishes contact of the tertiary winding with the network voltage-dependent electronic trigger unit.

Residual current circuit breaker

A residual current circuit breaker having a core-balance current transformer for detecting a residual current, wherein a secondary winding is arranged on a core of the core-balance element transformer, wherein the residual current circuit breaker has an AC measurement arrangement and a DC measurement arrangement, wherein the AC and DC measurement arrangements are designed to operate simultaneously and in parallel.

Residual-current circuit breaker

A ground-fault circuit interrupter has a test circuit for generating a test fault current. The test circuit includes a test button, a first test resistor, and a regulating circuit constructed to generate a test fault current with a predetermined and substantially constant value independent of an applied voltage of an electrical network to be protected. The test button, the first test resistor and the regulating circuit are connected in series between phases of the electrical network.

Ground-fault circuit interrupter

A residual-current circuit breaker includes at least one summation current transformer through which at least one first lead and one second lead of a network to be protected are guided. At least one secondary winding is arranged on the summation current transformer and operatively connected at least indirectly with at least one energy storage element. At least one discharging resistor is switched in parallel with the energy storage element. The residual-current circuit breaker has a trip element which is operatively connected with break contacts in the at least one first lead and the at least one second lead. In order to reduce unexpected cut-offs of a network to be protected, the at least one discharging resistor includes a first partial resistor, and a second partial resistor switched in series with respect to the first partial resistor, with a least one electric signaling device operatively connected, at least indirectly, with the first partial resistor.

A residual-current circuit breaker includes a summation current transformer having a core, a first secondary winding wound onto the core, and at least one second secondary winding wound onto the core, with lines of an electric network to be protected extending through the core. A tripping apparatus is operably connected to break contacts for opening the break contacts. A first arrangement is provided for detecting alternating residual currents and connected to the first secondary winding of the summation transformer. A second arrangement is connected to the second secondary winding for detecting direct residual currents, wherein a predeterminable alternating operation of the first and second arrangements is controlled by a timer device.

A differential-current switch includes a first unit arranged in an electric power supply network for detecting a differential current and outputting an analog differential current signal, an analog-to-digital converter receiving the outputted analog differential current signal and converting the outputted analog differential current signal to a digital differential current signal, a first digital signal processing unit receiving the digital differential current signal, a second unit for disconnecting circuit breaker contacts in the electric power supply network, and first means connected upstream of the analog-to-digital converter for adjusting the analog differential current signal. Adjustment of the analog differential current signal provides favorable resolution of a differential current signal over a wide dynamic range.

Growing community of inventors

Wolfpassing, Austria

Georg Ritzinger