GB/T 11026.8-2014 Replaced National standards

GB/T 11026.8-2014 Electrical insulating materials—Thermal endurance properties—Part 8:Determination of thermal endurance indices(TI and RTE)of an insulating material using the fixed time frame method

Publish Date: 2014-05-06 Implement Date: 2014-10-28 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 11026.8-2014

Standard Type: National standards

Standard Status: Replaced

is_force_gb: no

CCS Name: Electrician's insulating materials and their products

ICS Name: Comprehensive Insulation Materials

Publish Date: 2014-05-06

Implement Date: 2014-10-28

Pages: 44 pages

Scope

This part of GB/T 11026 proposes experimental and computational procedures for deriving the heat resistance, temperature index (TI), and relative heat resistance index (RTE) of insulating materials using the fixed time limit method (FTFM). According to FTMF, the aging process will occur over a few fixed time periods, each using an appropriate aging temperature point. At the end of each corresponding time period, the performance of the sample will be measured. This method differs from the procedures in GB/T 11026.1, where the aging process is completed at a few fixed temperatures, and the performance measurement is conducted after the aging process. The diagnostic tests used in FTMF are limited to destructive tests. This method is not suitable for non-destructive or verification tests. According to FTMF, the TI and RTE obtained from the experimental data in this part comply with GB/T 11026.1 and IEC 60216-2, with modifications made. The computational procedures and statistical experiments are adapted from the corresponding procedures in GB/T 11026.3 and IEC 60216-5.

Development Information

Word Count: 74 Thousand words Pages: 44 pages

Same series standard

GB/T 11026.7-2014 Electrical insulating materials—Thermal endurance properties—Part 7:Determination of relative thermal endurance index(RTE)of insulating material

Superseded by the following standards

GB/T 11026.8-2025 Electrical insulating materials—Thermal endurance properties—Part 8:Determination of thermal endurance indices(TI and RTI) of an insulating material using the fixed time frame method

Referenced Standards

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 21223-2007 Guide for the statistical analysis of ageing test data—Methods based on mean values of normalement distributed test results IEC 60212 IEC 60216-2 IEC 60216-4-1 IEC 60216-4-2 IEC 60216-4-3 IEC 60216-5

Adopt standards

IEC 60216-6:2006

Related Standards

GB/T 17648-1998 Active

GB/T 17648-1998 Insulating liquids—Determination of the partial discharge Inception voltage (PDIV)—Test procedure

Publish Date: 1998-12-21

GB/T 11027-1999 Replaced

GB/T 11027-1999 Specification for insulating varnishes containing solvent-Specifications for individual materials-Requirements for hot curing impregnating varnishes

Publish Date: 1999-03-23

GB/T 11026.4-1999 Replaced

GB/T 11026.4-1999 Guide for the determination of thermal endurance properties of electrical insulating materials—Part 4:Ageing ovens—Single-chamber ovens

Publish Date: 1999-09-13

GB/T 11028-1999 Active

GB/T 11028-1999 Test methods for the determination of bond strength of impregnating agents to an enamelled wire substrate

Publish Date: 1999-09-13

GB/T 1408.1-1999 Replaced

GB/T 1408.1-1999 Methods of test for electric strength of solid insulating materials-Tests at power frequencies

Publish Date: 1999-09-13

GB/T 11026.2-2000 Replaced

GB/T 11026.2-2000 Guide for the determination of thermal endurance properties of electrical insulating materials Part 2:Choice of test criteria

Publish Date: 2000-10-17