Partial Discharge Testing: A Progress Report PD – A Comparison Test
...550,000 records from tests using portable instruments only, a database was carefully compiled using the following selection criteria: only on-line tests ...
...550,000 records from tests using portable instruments only, a database was carefully compiled using the following selection criteria: only on-line tests ...
...of shorted turns. Therefore, detection of shorted turns cannot be based only on integral-induced voltage reduction, where one shorted turn is responsible
...of center) Ideal rotor position and reference is free running, without excitation, in a cold state For comparison two of these conditions were ...
...off-line tests for stator windings include insulation resistance, polarization index, dissipation factor, and partial discharge. Depending on the type of rotor winding, ...
...to nominal speed followed by automatic excitation (field flash) Excitation turned off and rotation on nominal rotational speed in mechanical rotation (free run) ...
...are essential for smooth machine operation. These measurements are an important component of machine condition monitoring, reliably providing specific and important information which ...
...all available test data through 2013 with over 400,000 records from tests using portable instruments only, a database was carefully compiled using the following ...
...2nd harmonic is, probably, caused by coupling. Two-plane dynamical balancing, as described, with regards to comparison between mechanical rotation and rotation under excitati
...“impact” or “bump” test and the online monitoring system using practical case studies for each. I. Background II. Impact Test Preparation A.
...pumping plants, ISO, 2005 ISO 10816- 1:2000; Mechanical vibration Evaluation of machine vibration by measurements on non-rotating parts; Part 1: General