Brown, Boveri & Cie Ag

Bbc Brown, Boveri & Company, Limited

Alexander Wiegand Gmbh Co.

Rolf Bleidt

Kurt Neubeck

Heinrich Neumaier

Wolfgang Wagenbach

Werner Konig

Joachim Nasterlack

Achim Gareus

Hans May

Disconnect switch, including a bus bar, at least one phase feed conductor being connected to the bus bar and having at least one fixed bus bar contact, a safety switch or circuit breaker, at least one outgoing conductor connected to the safety switch or circuit breaker, a drive shaft, at least one contact blade rotatably drivable on the drive shaft into current-conducting connection with the at least one fixed bus bar contact in an on position, and at least one fixed blade contact being in continuous current-conducting connection between the at least one outgoing conductor and the at least one contact blade.

Disconnect switch

Rotary disconnect switch assembly, including a metal encapsulation insulated with SF.sub.6 gas, flanges integral with the encapsulation, support insulators disposed on the flanges, a drive shaft passing through the encapsulation and having a portion disposed outside and a portion disposed inside the encapsulation, a drive connected to the outside portion of the drive shaft, a profile formed on the inside portion of the drive shaft, three disconnect blades fastened side by side in axial direction of the inside portion of the drive shaft, intermediate pieces passing through the support insulators being connectible to phase conductors, and an opposite pair of first and second fixed contacts for each individual phase connected along the intermediate pieces in axial direction of the drive shaft, the blades being rotatable between an 'on' position in which they connect the first and second contacts to each other and a 'disconnect' position.

Rotary disconnect switch

A density monitoring gauge is disclosed which modifies a Bourdon tube manometer by introducing a compensating element between the end of the Bourdon tube and the pointer actuating mechanism. The compensating element is designed to accommodate for changes in circumferential length of the Bourdon tube induced by temperature as well as to compensate for pressure changes in a closed system attributed directly to changes in gas temperature within that closed system. The compensating means may consist of a bimetallic member having an .OMEGA. configuration. Alternatively, the compensating means may include a pair of synthetic material rods connected by a thermally stable member such that linear thermal expansion of the rods is additively connected between the tube spring and the pointer actuating mechanism. The density measuring device is desirably used in connection with sulfur hexafluoride insulated electrical switching gear. If desired, the density monitor may be arranged with an electrical alarm to indicate the presence of a leak.

Density monitoring apparatus

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Hanau, Germany

Rolf Bleidt