Pomiary wyładowań niezupełnych silników elektrycznych przy użyciu czujników antenowych

The article presents experience of the author in use of antenna detectors for measurements of partial discharges in electric motors. The measurements aim at off-line and on-line evaluation of the condition of winding insulations. The author presents results of his own research, in particular discussing antennas based on RTDs, strip, loop and mobile antennas. The author demonstrates high usefulness of RTD-type antenna systems together with antenna assemblies in measurements of partial discharges in motors. Measurements of partial discharges by individual RTDs situated in motors enable to locate the place of partial discharge generation, i.e. the place where winding insulations are weakened. Antenna detectors are very useful to measurements of partial discharges and on-line diagnostics of the condition of winding insulations. The author's solutions regarding detectors for measurements of partial discharges in electric machines in industrial conditions have proved to be successful.