REVIEW OF TEMPERATURE-RISE TESTING
METHODS FOR ELECTRICAL ROTATING MACHINES
Authors: Walter Evaldo Kuchenbecker¹; Julio Carlos Teixeira²
1 Researcher Doctor Collaborator of the ENERGY Graduate Program - UFABC, walterk@weg.net;
² Professor of the ENERGY Graduate Program, UFABC juliocarlos.teixeira@ufabc.edu.br
ABSTRACT
The need for temperature-rise measurement is relevant
for companies that provide or service electrical machines,
and especially for users. The manufacturing or repair must
satisfy thermal limits of the electrical machine’s insulation,
since exceeding such limits compromises the useful life of the
equipment. In addition to temperature-rise, the test can identify
potential failures in design, manufacturing and refrigeration
circuits. Such conditions are only possible to assess with fullload
tests. If this is not possible, at least as close as possible
to nominal conditions, even if equivalent methodologies
and extrapolations must be used for said purpose. The
article contains a review of the methods and techniques
for temperature-rise tests on rotating electrical machines,
demonstrating the importance and necessity to perform such
tests to ensure the integrity of this kind of equipment, for both
repairs and new electrical machines.
Keywords: Electrical Machines; insulation class; temperature rise.