Signal coupling apparatus for power line communication

摘要

Disclosed is a signal coupling apparatus for power line communication, the apparatus comprising a housing centrally formed with a groove to pass a power line there through, and a non-contact interface unit accommodated inside the housing to induce a power signal or a power line communication signal from the power line using an electromagnetic induction.

主权项

1. A signal coupling apparatus for power line communication, the apparatus comprising:
a housing centrally formed with a groove to pass a power line therethrough and formed with an elastic member; and a non-contact interface unit accommodated inside the housing to induce a power signal or a power line communication signal from the power line using an electromagnetic induction, wherein the non-contact interface unit comprises a first current transformer and a second current transformer, each of which having a core wound with an electric wire, wherein the core wound with the electric wire is molded and accommodated into the housing by dividing an internal space of the housing and a cylindrical hole is formed at a center of the core to warp a periphery of the power line wherein the first current transformer induces the power signal as a signal on a secondary side and is formed with a non-oriented first material excellent in saturation characteristic in high current, and wherein the second current transformer induces the power line communication signal as a signal on the secondary side and is formed with a second material smaller in attenuation in a frequency band different from that of the first material.