GB/T 11026.9-2016Electrical insulating materials -- Thermal endurance properties -- Part 9: Instructions for calculating thermal endurance characteristics using simplified procedures (English PDF)

Foreword

GB/T 11026 "Electrical insulation material heat resistance" is divided into the following parts.

- Part 1. Assessment of aging procedures and test results;

- Part 2. Selection of test criteria;

- Part 3. Procedures for calculating heat - resistant characteristic parameters;

- Part 4. Aging oven Single chamber oven;

- Part 5. Precision oven with aging oven temperature up to 300 ° C;

- Part 6. Aged oven multi - chamber oven;

- Part 7. Determine the relative heat resistance index (RTE) of insulating materials;

- Part 8. Determining the heat resistance index (TI and RTE) of insulating materials with a fixed time limit method;

Part 9. Guidelines for calculating heat resistance using simplified procedures.

This part is part 9 of GB/T 11026.

This part is drafted in accordance with the rules given in GB/T 1.1-2009.

This part uses the translation method equivalent to the use of IEC 60216-8.:2013 "Electrical insulation materials, heat resistance Part 8. the use of simplified procedures Guidelines for Calculating Heat Resistance "(1st edition).

And the normative reference in this part of the international standards are consistent with the relationship between China's standards are as follows.

Electrical insulation - Heat resistance and presentation method (IEC 60085.:2007, IDT); GB/T 11021-2014;

- GB/T 11026.2-2012 Electrical insulating materials - Heat resistance - Part 2. Selection of test criteria (IEC 60216-2.:2005, IDT);

GB/T 11026.3-2006 Heat insulation of electrical insulating materials - Part 3. Procedures for calculating heat resistance characteristics (IEC 60216-3.:2002, IDT);

GB/T 11026.4-2012 Electrical insulating materials - Heat resistance - Part 4. Aging oven Single chamber oven (IEC 60216-4-1.:2006, IDT);

GB/T 11026.7-2014 Heat insulating properties of electrical insulating materials - Part 7. Determination of relative heat resistance of insulating materials (RTE) (IEC 60216-5.:2008, IDT).

This section makes the following editorial changes.

--- changed the standard name.

This part is made by China Electrical Equipment Industry Association.

This part of the National Electrical Insulation Materials and Insulation System Standardization Technical Committee (SAC/TC301) centralized.

This part of the drafting unit. Machinery Industry Beijing Institute of Technology and Economic Research Institute, Yantai Min Shi of Special Paper Co., Ltd., Jiaxing City New China Electrical and Mechanical Co., Ltd., DuPont (China) R & D Management Co., Ltd., Shunde District of Foshan City, quality and technical supervision standards and coding, Shanghai Cable Research Institute, Suzhou Taihu Electric New Materials Co., Ltd., Guilin Institute of Electrical Science and Technology Co., Ltd.

1 Scope

This part of GB/T 11026 specifies general aging conditions and simplified procedures to obtain heat resistance characteristics, including temperature index (TI), phase the temperature index (RTI) and the half difference (HIC).

The procedure set forth in this section specifies the principle of assessing the heat resistance of insulating materials at high temperatures for extended periods of time.

Note 1. When using this section, there is a linear relationship between the logarithm of the time required to cause a change in the intended performance and the reciprocal of the corresponding absolute temperature (Arrhenius relationship).

NOTE 2 In order to effectively apply this part, there should be no change, especially a primary change, in the temperature range studied.

Note 3. All other parts of GB/T 11026, the term "insulating material" is used to denote "insulating material and its simple assembly".

2 Normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document.

GB/T 11026.1-2016 Heat insulation of electrical insulating materials - Part 1. Evaluation of aging procedures and test results (IEC 60216-1.:2013, IDT) ISO 291 Standard for Plastics Adjustment and Testing (Plastics-Standardatmospheres forconditioning and testing IEC 60085 Electrical Insulation and Characterization (Electricalinsulation-Thermalevaluation anddesig-nation IEC 60216-2 Electrical insulating materials - Heat resistance - Part 2. Determination of heat resistance of electrical insulating materials - Test criteria (Electricalinsulatingmaterials-Thermalenduranceproperties-Part 2. Determination ofthermal endurancepropertiesofelectricalinsulatingmaterials-Choiceoftestcriteria) IEC 60216-3 Electrical insulating materials - Heat resistance - Part 3. Procedures for calculating heat - resistant characteristic parameters (Electricalinsulating materials-Thermalenduranceproperties-Part 3. Instructionsforcalculatingthermalendurance characteristics) IEC 60216-4-1 Electrical insulating materials - Heat resistance - Part 4-1. Aging oven Single - chamber oven (Electricalinsulating materials-Thermalenduranceproperties-Part 4-1. Ageingovens-Single-chamberovens) IEC 60216-5 Electrical insulating materials - Heat resistance - Part 5. Determination of relative heat resistance (RTE) of insulating materials [Electricalinsulating materials-thermalenduranceproperties-Part 5. Determination ofrelative thermalenduranceindex (RTE) ofaninsulatingmaterial]

3 Terms and definitions, symbols and abbreviations