System for detecting the extraordinary approach of objects havin

Details System for detecting the extraordinary approach of objects havin System for detecting the extraordinary approach of objects havin

1991-07-30

1992-09-22

Wieder, Kenneth A.

Electricity: measuring and testing

Testing potential in specific environment

Voltage probe

324457, 340562, G01R 3102

Patent

active

051500388

ABSTRACT:
A detector for detecting an extraordinary approach of objects having earth potential toward a power transmission line comprises a charging current detection circuit for measuring variations in a charging flowing from the power transmission line into a stray capacitance formed between a detector casing and the earth and a transmitter for sending the value measured by the charging current detection circuit to a receiver installed outside the detector casing by wireless means or a wire. The detector is always able to monitor the extraordinary approach of objects such as trees toward the power transmission line, thereby preventing in advance the accidental grounding of the line.

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