Abstract: A current-carrying screw connection between two tubular conductors located in a high-voltage switching installation having a metal encapsulation and insulated with compressed gas comprises radially oriented screws and a tubular shield, the screw heads being disposed inside the wall of the shield. The shield extends in a longitudinal direction over the ends of the two conductors and covers the butt joint between them. The shield is connected to each conductor via screws which are disposed within a region having a maximum circumferential extent of 180.degree..

Abstract: A disconnect switch, suitable for various conductor runs within a section of a metal-clad, gas-filled, high-voltage switchgear, with shielding bodies enclosing the ends of the conductors, is operated through a rotating insulator shaft that is perpendicular to the plane of the phase-current path of the section. One shielding body is made approximately in the shape of a sphere, whose center lies on the axis of the rotating insulator shaft and on the longitudinal axis of a movable switch contact. In the interior of the sphere there are one or more surfaces to accept a connecting means necessary for connection with the end of a first conductor. The mid-perpendiculars of each of the connection surfaces lie in the plane of the phase-current path. The isolating gap also lies in the path of an angled second conductor.

Abstract: A switching assembly for a high voltage switching installation includes a tubular movable main switching contact in which is disposed an auxiliary switching pin. An elastic spring drive with a drive lever and a cocking lever is pivotably attached at an outer part of a shaft traversing the movable main switching contact. The drive lever is connected at an end opposite the pivot shaft to one end of a coupling lever in turn pivotably connected at an end to the auxiliary switching pin by means of a shaft. A hinged spring is connected at one end to the drive lever and at an opposite end to the cocking lever. A guide roller of a mechanical control is rotatably secured to the cocking lever and is disposed in a longitudinal guide slot for controlling the cocking of the spring to shift the drive lever between two end positions.

Abstract: A disconnect switch has a fixed tubular contact, an associated fixed auxiliary contact connected thereto, and a movable tubular contact which is guided in a stationary outer housing. The movable tubular contact contains a movable auxiliary contact. Both movable contacts are separately movable into connection with the fixed contacts. To enable the switch to be used for higher voltages while achieving short pre-breakdown times and using a drive which operates at normal speed, the movable auxiliary contact is at first latched against movement, compressing a spring. The movable auxiliary contact is then released to actuate the switch. To this end, each end of the movable auxiliary contact is provided with a catch which can be engaged by a cooperating pawl located at either end of the travel of the auxiliary contact. A control member is longitudinally movable on the movable auxiliary contact. A spring is mounted between the control member and each of the catches.

Abstract: A disconnect switch has a fixed tubular contact and a tubular contact movable into connection with the fixed contact. A movable auxiliary contact within the movable tubular contact can travel into connection with a stationary auxiliary contact on the fixed tubular contact. The switch has short pre-breakdown times at higher voltages and includes a support shaft carried by the movable tubular contact and at least one sleeve which is arranged on the shaft. A pantograph-like connecting member has one end fastened to the sleeve and the other end coupled to the movable auxiliary contact. Elements of a mechanical control device are also fastened to the outside of the sleeve and, in cooperation with fixed extrusions of the outer switchhousing, cause the sleeve to rotate when the movable tubular contact is moved.

Abstract: In a compressed gas insulated high voltage switching installation, in particular, one with single phase metallic encapsulation, including bus bar systems and switchgear sections, with branches which are firmly anchored in space and in which compensators with tie rods are arranged in line with the bus bar systems, the longitudinal expansion of the housings of the bus bar systems is taken up practically free of stress without large cost, by subdividing each phase of the bus bar systems into sections preferably lying along two parallel longitudinal axes. Double-T-shaped connecting housings, firmly anchored in space, are arranged between adjacent sections of the same phase and, at least at one end of each section, a compensator is arranged on both sides of the connecting housing. Tie rods, starting from the outer flanges of the compensators, bridge the compensators and the connecting housing.

Abstract: In order to avoid the encumbrance of a rotary mirror scanner by large calating radiation sources for intermittently illuminating the detector element of the scanner, a supplementary radiometer responsive to the same scene as is scanned is absolutely calibrated by intermittent illumination from calibrating sources that are conveniently small. The calibrated radiometer signal is compared to portions of the scanner output responding to the same object field, for calibration of the scanner output. The radiometer may be scanned at right angles to the direction of scan of the scanner in order to provide calibration of both the forward cross lines and rear cross lines alternately scanned by a stereoscopic scanner, for stereoscopic observation of cloud formations, land masses, air traffic distribution or the like from a space craft.

Abstract: An elastic-spring drive for the movable contact of an electric grounding or disconnect switch is disclosed. The movable contact is coupled by at least one lever to a drive shaft. A drive lever is rigidly connected to the drive shaft and a cocking lever is rotatably coupled to the drive shaft. An elastic compression spring is supported flexibly at both ends between the drive lever and the cocking lever, one end of the spring being connected to the free end of the drive lever and the other end to the free end of the cocking lever. This arrangement enables the drive lever to be held stationary during cocking of the spring. The spring is slowly cocked by the motion of the cocking lever until it is fully compressed while the drive lever is stationary. Continued rotation of the cocking lever thereafter abruptly releases the spring which quickly rotates the drive lever to its end position, thereby rotating the drive shaft.