DL/T 492-2009 (English Version) PDF

Scope: This standard specifies the test cycle, qualification procedures and judgment standards for the aging qualification of generator epoxy mica stator winding insulation, and provides recommended test methods. This standard is applicable to the aging identification of stator winding insulation of generators and condensers made of epoxy mica. When the generator stator winding insulation is aging or has workmanship defects, the status of the stator insulation can be correctly judged through identification tests. Imported units shall be implemented accordingly.

DL/T 492-2009 Referenced Document

DL/T 417-2006 Guide for partial discharge measuring of power equipment
DL/T 474.3-2006 Guide for insulation test on site Dielectric dissipation factor test
DL/T 596 Rules for preventive testing of electrical equipment
DL/T 838-2003 Guide of maintenance for power plant equipments
GB/T 16927.1-1997 High-voltage test techniques. Part 1: General test requirements
GB/T 16927.2-1997 High-voltage test techniques. Part 2: Measuring systems
GB/T 20833-2007 The guide for partial discharge measurements and evaluation on stator bar and winding insulation of rotating machinery
IEEE Std 286-2000 IEEE Recommended Practice for Measurement of Power Factor Tip-Up of Electric Machinery Stator Coil Insulation*， 2023-04-19 Update
JB/T 6204-2002 Specifications for withstand voltage test on stator coil and winding insulation of high voltage AC machines

2009 DL/T 492-2009 Guide for aging appraise of generator stator winding insulation with epoxy mica
1992 DL/T 492-1992 Guiding principle for appraising aging of epoxy mica insulation for generator stator