Patent ID: 6417661
Filing Date: 2002-07-09
Classification: G01R

Abstract:
A self powered parallel bar current sensor for sensing current from a line current source, said bar current sensor comprising:a power coil core having a power coil core opening extending therethrough; and a current sensing element comprising two substantially parallel sensing bars and a sensing coil, each of said sensing bars having a first end electrically connected to each other and a second end electrically connected to each other, at least one of sensing bars extending through said power coil core opening, said sensing coil positioned between said sensing bars; said current sensing element being adapted to be electrically coupled to said line current source, said sensing bars further being disposed with respect to said power coil such that current passing through said current sensing bars induces a voltage in said power coil, said power coil being electrically coupled to energize at least one sensing circuit component.