PFISTERER developed the first universal cable repair system suitable for all XLPE-insulated cables – regardless of type and cross-section – for Schleswig-Holstein Netz AG, the largest electricity network operator in the German state of Schleswig-Holstein and partner to some 900 municipalities. The Universal Repair Kit allows cable faults to be repaired within a very short time, even in historically evolved networks. At the same time, it minimises the network operator’s need to stock reserve cables.
A solution for all scenarios
Schleswig-Holstein Netz AG is responsible for 2,600 km of 110 kV lines, of which around 80 km are 110 kV XLPE cables, with 12 different cable types and cross-sections ranging from 240 to 2,500 mm². From a logistics point of view, preparing for emergencies is a Herculean task. PFISTERER recommended a universal solution for all cable types. The Universal Repair Kit is based on the pluggable CONNEX cable connection system by PFISTERER. A key element of the kit is a universal epoxy resin joint for voltages up to 170 kV. It allows all different kinds of cable diameters and types to be connected easily. The faulty cable section is simply exposed and removed. Connectors are then fitted to the two cut ends, and to a universal reserve cable. Finally all the connectors are connected using two joints – job done.