Patent ID: 11933832
Assignee: TELETECH PTY LTD
Field: Other special machines (Mechanical engineering)
Classification: CPC G  A | IPC A  G

Claim 13:
14. A method for locating a fault in a conductor composed of a first conductor portion and a second conductor portion separated from each other by the fault, the method including:
using a field generator to apply a first oscillating signal between the first conductor portion and an earth, the first oscillating signal having a frequency of between 1 and 20 kHz;
using the field generator to apply a second oscillating signal between the second conductor portion and an earth, the second oscillating signal having a frequency of between 1 and 20 kHz and being different to the first oscillating signal;
using a mobile detector to capacitively detect a first electric field produced by the application of the first oscillating signal and to output a signal representing the detected first electric field;
using the mobile detector to capacitively detect a second electric field produced by the application of the second oscillating signal and generate a signal representing the detected second electric field;
maneuvering the mobile detector to locate the position of the fault by reference to the signals generated by detection of both first and second electric fields; and
providing a signal representing a comparison between the signal representing the detected first electric field and the signal representing the detected second electric field.