GB/T 27749-2011 (English Version) PDF

Standard No.: GB/T 27749-2011
Language: Chinese, Available in English version
Release Date: 2011
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 27749-2011

Scope: This standard specifies a method for determining the heat resistance of electrical insulating varnishes. This method is to determine the heat resistance by measuring the electrical strength of the insulating varnish coated on the glass cloth before and after heat aging. This standard is used to evaluate the temperature index in order to determine the applicability of electrical insulating varnishes in electrical systems.

GB/T 27749-2011 Referenced Document

GB/T 10580-2003 Standard conditions for use prior to and during the testing of solid insulating materials
GB/T 11026.1-2003 Electrical insulating materials-Properties of thermal endurance-Part 1:Ageing procedures and evaluation of test results
GB/T 11026.3-2006 Electrical insulating materials.Thermal endurance properties.Part 3:Instructions for calculating thermal endurance characteristics
GB/T 11026.4-1999 Guide for the determination of thermal endurance properties of electrical insulating materials-Part 4: Ageing ovens-Single-chamber ovens
GB/T 1408.1-2006 Electrical strength of insulating materials-Test methods-Part 1:Tests at power frequencies

2011 GB/T 27749-2011 Test procedure for thermal endurance of insulating varnishes.Electric strength method