Logo

IEEE 792-1995

Current Revision

IEEE Trial-Use Recommended Practice for the Evaluation of the Impulse Voltage Capability of Insulation Systems for AC Electric Machinery Employing Form-Wound Stator Coils

$55.00


Sub Total (1 Item(s))

$ 0.00

Estimated Shipping

$ 0.00

Total (Pre-Tax)

$ 0.00


Stay effortlessly up-to-date with the latest standard revisions. When new versions are released, they're automatically charged and delivered to you, ensuring seamless compliance.

Document Preview Not Available...

New IEEE Standard - Inactive-Withdrawn. A test procedure for the evaluation of the impulse voltage capability of insulation systems of form-wound ac rotating electrical machinery is outlined. The procedure is primarily directed toward providing a qualification test for the turn insulation in regard to its ability to withstand impulses that might be impressed on the terminals of a machine and that result from switching surges, lightning, or other disturbances. The standard also presents information on the ability of the ground insulation to withstand impulses. The procedure provides a basis for the accumulation, analysis, and reporting of information concerning impulse-voltage withstand strength of ground and turn insulation, both new and aged. The use of multifactor aging tests, combining thermal and electrical aging in order to address the withstand capability of micaceous insulation, is recommended.
This recommended practice outlines a test procedure for the evaluation of the impulse voltage capability of insulation systems of form-wound alternating current rotating electrical machinery. This test procedure forms a base for the accumulation, analysis, and reporting of information concerning impulse voltage withstand strength of ground and turn insulation, both new and aged. The immediate goal is a better understanding of relevant aging mechanisms; the ultimate aim of this document is to aid in estimating life of an insulation system under speciÞed service conditions. It must be emphasized that this test procedure is intended, at this time, for trial use. Future revisions, made after experience with it, should result in more deÞnitive speciÞcations being possible. This procedure recommends the use of multi-factor aging tests, combining thermal and electrical aging in order to address the withstand capability of micaceous insulation. Variations of this procedure may be tried, such as for voltage ratings other than 6.9 kV and 13.8 kV, for turn insulations other than mica, and for various impulse wave forms. The procedure is primarily directed toward providing a qualification test for the turn insulation in regard to its ability to withstand impulses that might be impressed on the terminals of a machine and that result from switching surges, lightning, or other disturbances. It will also provide information on the ability of the ground insulation to withstand impulses. In addition, the test model used in the tests described herein will be suitable for testing the strand insulation, if that is desired, although it is not a function of this qualiÞcation test procedure.

SDO IEEE: Institute of Electrical and Electronics Engineers
Document Number 792
Publication Date July 19, 1997
Language en - English
Page Count 14
Revision Level
Supercedes
Committee Electric Machinery
Publish Date Document Id Type View
July 19, 1997 792-1995 Revision
July 29, 1988 792-1988 Revision