GB/T 20833-2007 (English Version) PDF

Standard No.: GB/T 20833-2007
Language: Chinese, Available in English version
Release Date: 2007
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Status: Be replaced 2016-09
Replace By: GB/T 20833.1-2016
Latest: GB/T 20833.1-2021

Scope: This standard is applicable to the rotating motors with anti-corona layer in the groove of the voltage level 6kV and above, or the rotating motor with open coil. The measurement method of this standard is also applicable to the motor without anti-corona layer in the groove, but the test results will be different. Standards are not involved in this evaluation. This standard defines the terminology of partial discharge of rotating electrical machines, recommended test procedures and general requirements for instruments, test methods, test results and test evaluation criteria. Partial discharge measurement should include the following: a) measurement system and instruments; b) test circuit layout; c) standardization of test procedures; d) noise reduction; e) test result files; f) test result evaluation. This standard mainly specifies the electrical measurement method for off-line partial discharge measurement of stator windings of rotating electrical machines using AC power with a frequency of 0.1 Hz to 400 Hz.

GB/T 20833-2007 Referenced Document

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 7354-2003 Partial discharge measurements

2021 GB/T 20833.1-2021 Rotating electrical machines—The winding insulation—Part 1:Off-line partial discharge measurements
2016 GB/T 20833.1-2016 Rotating electrical machines—The stator winding insulation of rotating electrical machines—Part 1: Off-line partial discharge measurements
2007 GB/T 20833-2007 The guide for partial discharge measurements and evaluation on stator bar and winding insulation of rotating machinery