Patent ID: 6184690
Filing Date: 2001-02-06
Classification: G01R

Abstract:
A method of surge testing a coil assembly comprising a plurality of coils connected in series between a first end of said coil assembly and a second end of said coil assembly, said plurality of coils being inaccessible except via said first and second ends and said method comprises the steps of:applying a voltage pulse across said first and second ends of said coil assembly;monitoring at least one pickup device positioned generally adjacent to one of said plurality of coils by performing the steps of:monitoring a first pickup device positioned generally adjacent to a first coil of said plurality of coils, said first pickup device generating a first signal having a waveform representative of a magnetic field generated by said first coil in response to said voltage pulse;monitoring a second pickup device positioned generally adjacent to a second coil of said plurality of coils, said second pickup device generating a second signal having a waveform representative of a magnetic field generated by said second coil in response to said voltage pulse; andevaluating said first coil and said second coil by comparing said first signal with said second signal.