Abstract: Disclosed is a solar system comprising a solar panel (1) that is composed of spaced-apart modules (11-14) which are oriented in a North-South direction in an inclined position. The modules (11-14) are mounted on a support (15) which is in contact with an adaptively program-controlled electric drive (5). Said electric drive and thus the entire panel (1) are time-dependently swiveled about a stationary shaft (6) so as to obtain maximum solar radiation. The drive (5) is self-sufficiently powered by a solar module (11), thus dispensing with the need for solar sensors and auxiliary power supplies. An operating method aims to maximize solar output while taking into account the duration of daylight. The inventive system is used particularly for supplying emergency power to sensitive infrastructures. Several systems can be mechanically or electrically connected to each other according to the master-and-slave principle so as to create a solar park and be part of a large power system.

Abstract: A high voltage power switch for alternating current has a stationary, hollow contact, an axially displaceable contact, a nozzle through which compressed gas is directed into an expansion chamber, and a cylindrical coil. The coil is connected at one of its ends with a first part of the hollow contact, and at its other end with a second part of the stationary contact. In a switch of this type, the disconnect capacity is improved by an increased exchange of gas between the arc and the surrounding compressed gas, while the dimensions of the coil connected with the hollow contact and the magnitude of the flow of compressed gas are relatively small.

Abstract: A red colorant having the general formula ##SPC1##In whichR represents an aliphatic radical, andR' represents the radical of a compound of the formula H.sub.2 N--R', which compound is an amino sugar, a polymer of an amino sugar, a polyamino acid or an amino alcohol.