Method and apparatus for preventing dry band arcing in a combined overhead electrical power and optical transmission system
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United States of America Patent
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Jun 11, 1996
Grant Date -
N/A
app pub date -
Dec 6, 1994
filing date -
Oct 28, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An overhead electrical power and optical transmission system, comprising overhead electrical phase conductors (2) extending between and supported by towers (10), and at least one optical cable (1) that extends between and is supported by, the towers. Each optical cable has a resistive element (12) that is removably supported thereby and which extends from a tower (10) where it is earthed part of the way along the span of the optical cable, and the resistive element has the necessary length and conductivity such that if a dry band (6) occurs on the cable at the end of the element, the potential difference (VG') across the band is insufficient to form an arc, such that any induced current is insufficient to sustain any arc that may occur across the dry band.
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