Design and manufacture of composite insulator
dimension deviation unless otherwise specified, the composite insulator shall meet the following requirements (size deviation
D to check the size, in mm)
300: & plusmn;
04 d + 1。
When d> 300: & plusmn;
025d + 6)
Mm, * big deviation for & 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 mandrel composite insulator mandrel is internal insulation part of composite insulator, used to ensure that the design of mechanical strength.
Mandrel made from glass fiber reinforced resin rod, should have better performance of acid corrosion, appropriate USES acid mandrel.
Composite insulator mandrel should be able to in a large temperature range under the mechanical load for a long time, at the same time should also bear the working voltage of long-term and short-term overvoltage.
Injection process should be adopted high resistant WenXin rods.
Mandrel shall meet the requirements of DL/T 864.
Composite insulator mandrel 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 should be in accordance with GB/T 19519 appendix D 5.
Article 1 and 5.
2 of the ordinance.
Jacket and umbrella skirt sheath is external insulation part of composite insulator, it provides the required creepage distance and protect the core from climate impacts.
Umbrella skirt is prominent part of the sheath to increase the creepage distance.
Below 220 kv voltage class mandrel * small thickness of sheath shall be not less than 3.
0 mm, Q/JDL 1 500 kv voltage grade core.
2006 great * small thickness of sheath shall be not less than 4.
5 mm, sheathed umbrella skirt is the same material.
Sheath and umbrella skirt composite insulator should be overall molding (
Using injection or extrusion molding)
Information source: http://www.
Com/composite insulator 【
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