Composite insulator technology within the core insulation of composite insulator
dimension deviation unless otherwise specified, the composite insulator dimension deviation shall meet the following requirements (
The size of the sample checked, mm)
: when d≤
300, & plusmn;
04 d + 1。
When d> 300, & plusmn;
025d + 6)
* big deviation: mm, creepage distance & plusmn;
Design and manufacture of composite insulator composite insulator is composed of two parts of the insulator, at least the mandrel and sheath, and metal accessories.
Composite insulator core mandrel is composite insulator of internal insulation parts, at the same time to ensure design of mechanical strength.
Composite insulator mandrel made from glass fiber reinforced resin rod, should have better performance of acid corrosion.
Composite insulator mandrel should be able to in a large temperature range under long-term mechanical and electrical load;
Injection process should be adopted high resistant WenXin rods, mandrel should meet the requirements of DL/T 864.
The mandrel of composite insulator in longitudinal and transverse dielectric strength, glass content, moisture absorption, etc should satisfy the standard of strict quality control, and the dye penetrant test, water diffusion test shall be respectively in accordance with GB/T 19519 & ndash;
2004 appendix D 5.
Article 1, 5.
Article 2 and the provisions of this specification book table 7.
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