The new design of the vacuum circuit breaker mounted on the roof of Electric Traction Units

Abstract

This article presents the research on new design of a vacuum breaker type DCU-800M mounted on the roof of Electric Traction Units. The impact of one circuit breaker on another one was examined in detail when connecting them in parallel to the catenary. Streszczenie. W artykule przedstawiono badania nowej konstrukcji wyłącznika próżniowego typu DCU-800M w wykonaniu dachowym. Szczegółowo sprawdzono wpływ jednego wyłącznika na drugi podczas podłączenia ich równolegle względem sieci trakcyjnej. (Nowa konstrukcja wyłącznika próżniowego montowanego na dachu Elektrycznych Zespołów Trakcyjnych).

Development and Application of PIKH-Type Current Sensors to Prevent Improper Opening of Parallelly Connected DC Vacuum Circuit Breakers

“…A pioneer in the implementation of this technology using vacuum chambers is the Department of Electrical Apparatuses of Lodz University of Technology. An outline of parallel operation has already been presented by the authors in the 2018 publication titled "The new design of the vacuum circuit breaker mounted on the roof of Electric Traction Units" [2], which describes a new family of DCU-type circuit breakers with variants DCU-800MNL and DCU-800MNLD. The research carried out at the Short-Circuit Laboratory of the Department of Electrical Apparatuses of Lodz University of Technology focused on the technical verification of the new circuit breaker design and its location on the traction vehicle without taking into account the possibility of recuperation and the introduction of the "parking" mode to the standard of use of the traction vehicle.…”