This part of GB/T 7095 specifies the requirements of enamelled rectangular copper winding wire of class 180 with a sole coating based on polyesterimide resin, which may be modified providing it retains the chemical identity of the original resin and meets all specified wire requirements.
Note: A modified resin is a resin that has undergone a chemical change, or contains one or more additives to enhance certain performance or application characteristics.
Class 180 is a thermal class that requires a minimum temperature index of 180 and a heat shock temperature of at least 200℃.
The temperature in degrees Celsius corresponding to the temperature index is not necessarily that at which it is recommended that the wire be operated and this will depend on many factors, including the type of equipment involved.
The range of nominal conductor dimensions covered by this part is:
- Width: min. 2.00mm, max. 16.00mm;
- Thickness: min. 0.80mm, max. 5.60mm.
Wires of grade 1 and grade 2 are included in this part and apply to the complete range of conductors.
The specified combinations of width and thickness as well as the specified width/thickness ratio are given in GB/T 7095.1-2008.
Foreword I 1 Scope 2 Normative References 3 Definitions and General Notes on Methods of Test and Appearance 4 Dimensions 5 Electrical Resistance 6 Elongation 7 Springiness 8 Flexibility and Adherence 9 Heat Shock 10 Cut-through 11 Resistance to Abrasion 12 Resistance to Solvents 13 Breakdown Voltage 14 Continuity of Insulation 15 Temperature Index 16 Resistance to Refrigerants 17 Solderability 18 Heat or Solvent Bonding 19 Dielectric Dissipation Factor 20 Resistance to Transformer Oil 23 Pin Hole Test 30 Packaging
