Ald Vacuum Technologies Ag

Hilmar Lippert

Matthias Blum

Wilfried Goy

Bernd Sitzmann

A current connection suitable for transferring high-frequency, high-amp current consists of a stationary feed line part (2) and a rotational part (4), each of which is connected to paired conductor rails (6, 8; 6', 8'). The conductor rails (6, 8; 16, 18), connected at one end to a power generator and at the other end to the stationary feed line part (2), consist essentially of at least two parallel conductor rails, which are kept a certain distance apart by means of an insulator (5a). As a result of flexible power conductors (10, 10'), electrically conductive manner to the circular periphery of the outer conductor ring (14), the other end to inner conductor ring (15), the rotational part (4) can be rotated with respect to the stationary feed line part (2) in correspondence with the length of the current conductors (10, 10', . . . ; 11, 11', . . . ). The conductor rail (16, 18), consisting of two individual conductors (16, 18), is connected electrically to the individual poles of the rotational part (4) and projects at the other end through a leadthrough plate (20) into a sealable process chamber, in which, by means of the rotatable power connection, a melting device can be supplied with operating current. By means of the power connection, currents of up to I=20,000 A at voltages of up to U=500 V and at operating frequencies of up to f=10 kHz can be transferred.

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Alzenau, Germany

Hilmar Lippert