GB/T 20139-2006 (English Version) PDF

Standard No.: GB/T 20139-2006
Language: Chinese, Available in English version
Release Date: 2006
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Status: Be replaced 2017-03
Replace By: GB/T 20139.1-2016
Latest: GB/T 20139.1-2016

Scope: This standard specifies the test procedures necessary for the assessment of the adjusted thermal class of an electrical insulation structure of a defined class. This standard applies to the electrical insulation structure of electrical devices with random windings whose input voltage does not exceed 1000V. These test procedures are determined by comparing the performance of the insulation structure to be evaluated with the reference insulation structure. It must be pointed out that these reference insulation structures have been verified by actual operating experience according to IEC 60791-1984, or have passed a test procedure specified in the IEC 61857 series of standards. Evaluation test.

GB/T 20139-2006 Referenced Document

GB/T 11026.1-2003 Electrical insulating materials-Properties of thermal endurance-Part 1:Ageing procedures and evaluation of test results
GB/T 11028-1999 Test methods for the determination of bond strength of impregnating agents to an enamelled wire substrate
IEC 60172:1987 Test procedure for the determination of the temperature index of enamelled winding wires

2016 GB/T 20139.1-2016 Electrical insulation systems.Thermal evaluation of modifications to an established electrical insulation system (EIS).Part 1:Wire-wound winding EIS
2006 GB/T 20139-2006 Electrical insulation systems - Thermal evaluation of modifications to an established wire-wound EIS