Title :
The ramp test - its origins, development and application
Author :
McDermid, W. ; Bromley, J.C.
Author_Institution :
Manitoba Hydro, Winnipeg, MB, Canada
fDate :
10/1/2010 12:00:00 AM
Abstract :
The use of high direct voltage to assess the condition of stator windings of rotating machines can be traced back 60 years. Initially a step-voltage test in several forms, the advantages of applying the voltage in a continuous ramp function soon became apparent. A well regulated voltage supply is a prerequisite to good results. Many but not all defects in groundwall insulation can be detected nondestructively.
Keywords :
machine insulation; machine testing; stators; continuous ramp function; groundwall insulation; ramp test; rotating machines; stator windings; step-voltage test; voltage supply; Coils; Generators; Insulation; Optical switches; Stator cores; Stator windings; Windings; Rotating machine insulation, high direct voltage, ramp test;
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
DOI :
10.1109/TDEI.2010.5595548
