Abb Schweiz Ag

Peter Zeller

Walter Schmidt

Bernhard Richter

Jutta Barlage

Sarah Sitzler

Falko Schietzsch

Jutta Liesner

The apparatus is intended for disconnection of a live electrical conductor and has an enclosure () and two power connections () which are passed out of the enclosure (). A conductor section () which connects the two power connections () to one another and a propellant means are arranged in the enclosure interior (). The propellant means is used to produce an amount of compressed gas which is sufficient to disconnect the conductor section () when a fault current occurs. The propellant means is kept free of combustible substances and is chosen such that the amount of compressed gas which is required for disconnection can be thermally released from the propellant means by the electrical work produced by the fault current. Since explosive substances are avoided in the apparatus, the apparatus can be produced, transported, installed and maintained completely safely. After being commissioned, the apparatus is distinguished by high operational reliability.

Isolation apparatus

The pluggable electrical apparatus, formed in particular as a surge arrester (A), has an axially symmetrical housing () with a housing axis () running in the plugging direction, a flange () for fastening the apparatus housing () on a housing () of a high-voltage installation (H) and an axially symmetrical active part (). In order to make it possible for this apparatus (A) to be fitted into the high-voltage installation (H) in a simple manner, the flange () is formed into the apparatus housing () and the active part () is mounted displaceably in the axial direction in the apparatus housing () and held with a prestressing force with respect to the apparatus housing () before a plug-in connection is formed.

Pluggable electrical apparatus, in particular surge arrester

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Pichl bei Wels, Austria

Peter Zeller