KABELFORSKRUNING TIL FORBINDELSE AF ET HØJSPÆNDINGSKABEL TIL EN HØJSPÆNDINGSKOMPONENT

• Main Authors: Maurer, Victoria, Czyzewski, Jan, Lichy, Radim, Sorqvist, Torbjorn
• Format: Patent
• Language: Danish
• Published: 23.03.2020
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINEDOPTICAL AND ELECTRIC CABLES OR LINES

A high-voltage cable fitting, typically a cable end termination or a cable joint, comprises coaxially arranged around an axis (A) a rigid conical insulator, an electrically insulating, elastomeric stress-relief cone (20) matching the rigid conical insulator through a conical interface (30) and an axially aligned current path. The current path connects a conductor (42) of the cable (40) to a high-voltage current terminal (43) arranged on top of the rigid conical insulator and provided for connection to a high-voltage component. The rigid conical insulator is configured as a condenser core (10) and comprises a plurality of electrically conductive field-grading layers (13a, 13b, 13c), which are arranged concentrically around the axis (A), and a rigid polymeric matrix (14) which embeds the field-grading layers. In order to keep the size of the cable fitting small and to enable the fitting to carry high rated continuous currents a section (41) of the cable conductor (42), which is stripped off the insulation (44) of the cable (40), extends from the conical interface (30) to the high-voltage current terminal (43) and forms the axially aligned current path, and the condenser core (10) comprises an axially aligned tubular duct (11) which receives the stripped-off section (41) of the cable conductor (42) and which passes two opposing front faces (12a, 12b) of the condenser core (10).