Patent ID: 6292344
Filing Date: 2001-09-18
Classification: H02H

Abstract:
A floating ground circuit for a communications system susceptible to transient surges and periodic signals comprising:a splice point for electrically coupling at least two cables of a communications system together, each cable of the communication system having a sheath for passing induced energy signals, said sheath of each cable at the splice point being electrically coupled together;a surge suppressor having a first lead and a second lead, the first lead electrically connecting the surge suppressor to each conductive cable sheath electrically coupled at the splice point, the second lead electrically connecting the surge suppressor to ground for shunting transient surges having voltages exceeding a threshold value; anda filter connected in parallel with the surge suppressor for electrically coupling between each conductive sheath electrically coupled at the splice point and ground, the filter tuned for passing periodic signals having frequencies within a predetermined frequency range to ground without also passing to ground a desired cable locating periodic signal outside the predetermined frequency range and present on each conductive sheath of each communications cable located at the splice point.