Coupling of communications signals to a power line
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United States of America Patent
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-
Aug 17, 2010
Grant Date -
Dec 4, 2008
app pub date -
Jul 22, 2008
filing date -
Jul 15, 2005
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In one embodiment, a system for coupling a communications signal to a medium-voltage power line includes a surge arrester electrically coupled to a medium-voltage power line and a disconnect device electrically coupled to the surge arrester. The disconnect device is electrically coupled in parallel with a communications device and has a resistance of at least one thousand ohms and a capacitance between one picofarad and twelve picofarads. Furthermore, the disconnect device is electrically coupled to a ground without the use of ferrites.
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