Electric Power Research Institute Incorporated

Chris Engelbecht

Andrew John Phillips

J Mark Major

Mark Major

Bob Lynch

Eric Engdahl

A sensor apparatus for detecting leakage current in a suspension-type insulator of an electrical power system is disclosed. The sensor apparatus includes a housing having a leakage current sensor contained therein, a door pivotally connected to the housing and adapted to move between an open position where a grounded end fitting of the insulator is received by the sensor apparatus and a closed position, and a clamping mechanism connected to the housing. The leakage current sensor is adapted to detect a leakage current along the insulator. The clamping mechanism is adapted to clamp the sensor apparatus to the grounded end fitting of the insulator.

Leakage current sensor for suspension type insulator

An apparatus and method of harvesting power for charging batteries of a robot traversing an overhead transmission conductor is disclosed. The apparatus is adapted to harvest power from the overhead transmission conductor and provide a DC voltage for charging a battery and includes a first shield wire bonded to a structure that is grounded to the earth, a second shield wire isolated from the structure, and a charging station. The first shield wire, second shield wire, structure, and earth form a loop into which induced currents flow. The charging station is electrically connected to the second shield wire and adapted to convert induced currents flowing along the second shield wire into a DC voltage for charging a battery of the charging station.

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Ede, Netherlands

Chris Engelbecht