Abb Schweiz Ag

Abb Technology Ag

Andreas Nohl

Lukas Zehnder

Stephan Grob

Jean-Claude Mauroux

Per Skarby

Guenter Steding

Erwin Manz

Hans Wyder

Mattias Lundborg

Werner Sigrist

Alexander Schmidt

The circuit breaker system contains a plurality of phase conductors, a circuit breaker having a plurality of breaker poles, and a short-circuit link having a star point and a plurality of link conductors combined at the star point. Each of the phase conductors is electrically conductively connected to in each case one of the breaker poles and each link conductor is electrically conductively connected to in each case one of the phase conductors in each case one of several first disconnectors to which short-circuit current can be applied. In order to avoid expenditure on assembly and downtimes of the circuit breaker system when carrying out simulation experiments with the aid of the short-circuit link, the circuit breaker system contains a second disconnector which, when closed, electrically conductively connects the star point to ground and which is opened when a short-circuit current is applied to the short-circuit current link.

Multiphase circuit breaker system having a short-circuit link

An exemplary high-current switching arrangement in a generator duct arranged between a generator and a transformer is disclosed. This arrangement includes a pole frame which can be positioned on a base surface, a breaker pole of a generator circuit-breaker which is secured to the pole frame, and a drive which is secured to the pole frame. The breaker pole includes an active component arranged along an axis designed for the conduction and interruption of high currents and which incorporates a power switching point, with two axially spaced current terminals. The drive is arranged on a first of two end faces of the pole frame, and includes a linkage mechanism that transmits power from the drive to the power switching point.

High-current switching arrangement

The hybrid circuit breaker has at least two series-connected arcing chambers, which are operated by a commmon drive via a transmission ( ) connected upstream from it. It is intended to be possible to assemble this transmission ( ) easily in the interior of the hybrid circuit breaker. This is achieved in that the transmission ( ) is formed from at least two transmission parts which can be plugged together, with a first transmission part being firmly connected to the at least one first arcing chamber and a second transmission part being firmly connected to the at least one second arcing chamber. The transmission ( ) also has means which allow the movements of the at least two arcing chambers to be technically suitably matched to one another and to be optimized with respect to the time sequence and switching speed thereof.

Hybrid circuit breaker with a transmission

Growing community of inventors

Uhwiesen, Switzerland

Andreas Nohl