Abstract: A method and device for cooling and/or purifying a process gas, in which the process gas is precooled in a precooler by indirect heat exchange with a second coolant stream, and then cooled in a deep-freeze unit in indirect heat exchange with a first coolant stream. The first process stream is generated by vaporizing a condensed gas. At least one part of the first coolant stream leaving the deep-freeze unit is sent as at least part of the second coolant stream to the precooler, and at least another part of the first coolant stream leaving the deep-freeze unit is used with at least one part of the second coolant stream leaving the precooler to vaporize the condensed gas is vaporized and is vaporized. The part of the first coolant stream used to vaporize the condensed gas may be the part leaving the deep-freeze sent to the precooler.

Abstract: Partial discharges are to be detected within a metal-encapsulated, compressed-gas-insulated high-voltage switchgear using a capacitive voltage divider. The measurement device used for this purpose contains an electrode which is dish-shaped and is inserted flush in an opening of the capsule. A measurement cable leading to the display or measurement unit is built up coaxially and connected with a terminal element which is a supporting component and contains the electrode and the edge of the opening in the capsule. In addition, the terminal includes an outer connecting element in the shape of a hollow cone which extends to the edge of the opening and an inner connecting element in the shape of a cone that extends to the electrode, which are coaxially arranged, the ratio of whose diameters d.sub.a /d.sub.i is constant, and which have the characteristic impedance of the measuring cable.