GB/T 7673.4-2008 (English Version) PDF

Standard No.: GB/T 7673.4-2008
Language: Chinese, Available in English version
Release Date: 2008
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 7673.4-2008

Scope: This part of GB/T 7673 specifies the technical requirements for paper-insulated combined wires (referred to as combined wires). Arranged with overlapping surfaces, the insulating layer is made of 3 or more layers of insulating paper tapes for overlapping or gap wrapping. Applied to windings of transformers. This section should be used together with GB/T 7673.1. The nominal size range of flat wire conductors specified in this part: Narrow side a: (0.80≤a≤5.60) mm (preferred for R20 series) Broad side b: (2.00≤b≤16.00) mm (preferred for R20 series) Exceeding this The scope shall be negotiated and stipulated by the supply and demand parties. Number of combinations n: (2 to 12) roots.

GB/T 7673.4-2008 Referenced Document

GB/T 228 Metallic materials--Tensile testing at ambient temperature
GB/T 3048.8 Test methods for electrical properties of electric cables and wires.Part 8: AC voltage test
GB/T 4074.2 Winding wires.Test methods.Part 2:Determination of dimensions
GB/T 4074.3 Winding wires.Test methods.Part 3:Mechanical properties
GB/T 4074.5 Winding wires.Test methods.Part 5:Electrical properties
GB/T 7673.1-2008 Paper covered wires.Part 1:General requirements
GB/T 7673.3-2008 Paper covered wires.Part 3:Paper covered rectangular copper wire

2008 GB/T 7673.4-2008 Paper covered wires.Part 4:Paper coverde combined conductors