This part of GB/T 5019 specifies the methods of test which are applicable to built-up mica materials, products based on them and mica paper.
This part is applicable to insulating materials for electrical equipment, consisting of built-up mica or mica paper with or without reinforcing material bonded together, and applicable to mica paper.
2 Normative References
The following clauses contain provisions which, through reference in this part of GB/T 5019, constitute provisions of this part. For dated references, all subsequent modifications or revisions (excluding correction contents) are not applicable to this part. However, all concerned Parties are encouraged to study if the latest editions of these documents can be applied. For undated references, the latest edition of the normative document is applicable to this standard.
Contents Foreword i 1 Scope 2 Normative References 3 General Requirements for Test 4 Preparation Methods of Test Specimens for Curable Materials 5 Thickness 6 Calculated Density 7 Apparent Density 8 Composition 9 Heating Loss 10 Tension Strength and Elongation at Break 11 Flexural Strength and Elastic Modulus in Bend 12 Folding 13 Stiffness 14 Resistance to Exudation and Displacement 15 Elastic Compression and Plastic Compression 16 Resin flow and Consolidation 17 Gel Time 18 Softness 19 Edge Flexibility 20 Aliquation Rate 21 Plasticity 22 Electric Strength 23 Dissipation Factor/Temperature Characteristics at Frequencies of Between 48 Hz and 62 Hz 24 Dissipation Factor/Voltage Characteristics at Frequencies of Between 48 Hz and 62 Hz 25 Volume Resistivity 26 High Temperature Insulation Resistance 27 Detection of Defects and Conductive Particles 28 Penetration 29 Thermal Endurance Annex A (Normative) Comparison on Chapter and Section Numbers of This part and IEC 60371-2:2004 Annex B (Informative) Technical Differences between This Part and IEC 60371-2: 2004 and The Reasons
