Patent ID: 6927954
Filing Date: 2005-08-09
Classification: H04M

Abstract:
1. For use with a telecommunication line pair transporting telecommunication signals and delivering power from an output transformer winding of a rectified voltage generator at a telecommunication facility to remote terminal equipment, a method of limiting ground fault current comprising the steps of: (a) connecting a first end of a current flow sense element to ground and coupling a second end of said current flow sense element to a tap location of said output transformer winding, such that current flow through said current sense element is exclusive of current supplied by a voltage source other than said output transformer winding of said telecommunication line pair; (b) monitoring current flow through said current flow sense element; and (c) in response to current flow through said current flow sense element monitored in step (a) having a value representative of the occurrence of a ground fault on said telecommunication line pair, causing said rectified voltage generator to reduce its output voltage.