GB/T 1303.8-2009Industrial rigid laminated sheets based on thermosetting resins for electrical purposes -- Part 8: Requirements for rigid laminated sheets based on silicone resins (English PDF)

Foreword

GB/T 1303 "Industrial rigid laminated sheets based on thermosetting resins for electrical

purposes" includes the following several parts.

— Part 1.Definitions,designations and general requirements;

— Part 2.Test methods;

— Part 3.Requirements for types of industrial rigid laminated sheets;

— Part 4.Requirements for rigid laminated sheets based on epoxy resins;

— Part 4.Requirements for rigid laminated sheets based on melamine resins;

— Part 6.Requirements for rigid laminated sheets based on phenolic resins;

— Part 7.Requirements for rigid laminated sheets based on polyester resins;

— Part 8.Requirements for rigid laminated sheets based on silicone resins;

— Part 9.Requirements for rigid laminated sheets based on polyimide resins;

— Part 10.Requirements for rigid laminated sheets based on bis-maleimide resins;

— Part 11.Requirements for rigid laminated sheets based on polyamide-imide resins;

...

This Part is part 8 of GB/T 1303.

This Part equivalently adopts IEC 60893-3-6.2003 "Specification for industrial rigid

laminated sheets based on thermosetting tresins for electrical purposes - Part 3.

Specifications for individual materials - Sheet 6.Requirements for rigid laminated sheets

based on silicone resins" (English version)

The editorial differences between this Part and IEC 60893-3-6.2003 are as follows.

a) Delete the "Foreword" and "Introduction" in IEC 60893-3-6.2003; incorporate the

introduction into the "Foreword" of this Part;

b) Modify the "Scope" in Chapter 1; delete the declaration of conformity related to

materials; add the scope of application;

c) Delete the size marking in the name examples in Chapter 3;

d) Compile Chapter 1 "Requirements" according to articles "Appearance", "Size",

"Flatness" and "Performance Requirements"; compile "Supply Requirements" as an

independent chapter; modify table 5 in IEC 60893-3-6.2003; the content of NOTE is

put into the table's note; Table 5's "Test Method" is re-drafted as Chapter 5's "Test

Method"; add test methods and general provisions of cutting plate-strips;

e) Delete the bibliography of IEC 60893-3-6.2003.

This Part replaces GB/T 4206-1984 "Silicone resin glass laminated sheets".

The main differences of GB/T 4206-1984 and this Part are as follows.

a) In "Foreword", this Part lists out the composition of the standard series of industrial

rigid laminated sheets based on thermosetting resins for electrical purposes;

b) Add detailed provisions of "Designation Composition", "Resin Types" and

"Reinforcement Types" of laminated sheets in Chapter 3 "Classification"; specifically

add all types of industrial rigid laminated sheets based on silicone resins, not only

SIGC 201 type;

c) Specify thickness tolerances according to different types;

d) Add tolerance requirements of laminated sheets of nominal thickness above 25mm;

e) Add property requirements such as "Parallel Cantilever Beam Impact Strength",

"Vertical Electrical Strength (in 90°C oil), "Dielectric Constant (48Hz~62Hz)",

"Dielectric Loss Factor (48Hz~62Hz) and "Combustibility";

f) Delete the description of "Test Methods" in GB/T 4206-1984; list out the

corresponding chapter numbers into table 5 "Performance Requirements" of this

Part.

This Part was proposed by China Electrical Equipment Industry Association.

This Part shall be under the jurisdiction of National Technical Committee on Insulating

Material of Standardization Administration of China (SAC/TC 51).

The drafting organizations of this Part are Xi'an XD Electrical Material Co.,Ltd., EM

Technology Co.,Ltd., Beijing New Friend Insulation Material Co., Ltd., and Guilin Electric

Appliance Science Research Institute.

Main drafters of this Part. Du Chaoyun, Zhao ping, Liu Qihuan, and Luo Chuanyong.

Previous version replaced bt this Part is as follows.

— GB/T 4206-1984.

Industrial rigid laminated sheets based on thermosetting

resins for electrical purposes - Part 8.Requirements for rigid

laminated sheets based on silicone resins

1 Scope

This Part of GB/T 1303 specifies the classification requirements of industrial rigid

laminated sheets based on silicone resins and different reinforcements for electrical

purposes.

This Part applies to industrial rigid laminated sheets based on epoxy resin and different

reinforced materials. Their purposes and features are shown in table 1.

2 Normative references

The articles contained in the following documents have become part of this Part of GB/T

1303 when they are quoted herein. For the dated documents so quoted, all the

modifications (excluding corrections) or revisions made thereafter shall not be applicable

to this Part. For the undated documents so quoted, the latest editions shall be applicable

to this Part.

GB/T 1303.1-2009 Industrial rigid laminated sheets based on thermosetting resins for

electrical purposes - Part 1.Definitions, designations and general requirements (IEC

60893-1.2004, IDT)

GB/T 1303.2-2009 Industrial rigid laminated sheets based on thermosetting resins for

electrical purposes - Part 2.Test methods (IEC 60893-2.2003, MOD)

3 Designation

The sheets covered by this specification are classified into types, which differ in the

reinforcement employed and in their distinguishing properties. The sheets are designated

by

– the GB standard number;

– a two-letter abbreviation, denoting the resin;

– a second two-letter abbreviation denoting the reinforcement;

– a serial number;

Example of designation. Industrial rigid laminated sheet of type SI GC 201, the name for

5 Test Methods