Richard Lee Bunch

US Patent:

45702314, Feb 11, 1986

Filed:

Jan 27, 1984

Appl. No.:

6/574510

Inventors:

Richard H. Bunch - Vancouver WA

International Classification:

G01R 3108
G06F 1520

US Classification:

364492

Abstract:

A fault finder for locating faults along a high voltage electrical transmission line. Real time monitoring of background noise and improved filtering of input signals is used to identify the occurrence of a fault. A fault is detected at both a master and remote unit spaced along the line. A master clock synchronizes operation of a similar clock at the remote unit. Both units include modulator and demodulator circuits for transmission of clock signals and data. All data is received at the master unit for processing to determine an accurate fault distance calculation.