Technical Document of Polymer Insulator
Composite insulators are insulated by a composite structure composed of two or more organic materials. The composite insulators operating in the power grid are mainly rod-shaped suspension insulation, which accounts for more than 95% of the total number of various operating composite insulators
silicone rubber is a kind of composite (polymeric) material consists of long-chain polysiloxanes, aluminium hydroxide (Al(OH)3) and various filler additives.
Composite insulators have been widely used in power systems because of their light weight, high strength, strong pollution flashover resistance, and convenient manufacturing and maintenance, breaking the long-term dominance of porcelain and glass insulators. According to incomplete statistics...
The insulators furnished shall be in accordance with, but not limited to IEC 61109, IEC61952
The core rod is the load-bearing component of the composite insulator's mechanical load, and at the same time is the main part of the internal insulation.
The Sheds sheath is the outer insulating part of the composite insulator. Its function is to make the composite insulator have sufficiently high external insulation performance against moisture flashover and pollution flashover to protect the core rod from the external atmosphere.
Typical end fitting configurations of composite insulators are shown in following figure. Dimensions are in accordance with: IEC 60120 etc.
The selected composite insulators for overhead transmission lines not only meet the electrical performance of the power grid
Polymer line post insulator (also called composite line post insulator, polymeric line post insulator) consisting of a load-bearing cylindrical insulating solid
The load is gradually increased until the locking device moves to the coupling position. for 3 times
Angle steel towers are the most common form of high-voltage towers. Most of them are space truss structures made of hot-rolled and other limb angle steel and as
For insulators, high ATH content can improve the resistance to tracking and electrical erosion of composite insulators, but if ATH content is too high, the link
Polymer insulator is a kind of insulator with polymer insulation parts, and it is also named also named composite insulators, silicone rubber insulator.
Pollution Level of Insulators and creepage distance needed for the insulators
B.I.L means Basic Insulation Level Definition.
Clearance Distance also called minimum arcing distance, it is the shortest distance between two conductive parts of insulators.