DISPOSITIF DE COUPLAGE POUR LE COUPLAGE DE PAIRES DE FILS POUR LA TRANSMISSION D'INFORMATIONS,ISOLEES DANS UN CABLE DE PHASES DE CONDUCTEURS SOUS TENSION MOYENNE

摘要

In order in particular to achieve a low coupling loss and to allow repeated coupling in and out of the communications signals, a broadband transformer (1) is used in an insulator housing (12). The high-voltage winding (2) of this transformer is connected to a double wire (3) of a phase cable (4). The mid-point of the winding which is connected to earth is capacitively connected via a capacitor (5) to the line armouring (6) of the phase cable (4) which is connected to high potential. The low-voltage winding (7) is connected to a double wire (3) of a communications cable (4). The design cost of this device is low and it is also relatively inexpensive to manufacture. <IMAGE>