Composite wall bushing
Overview
Insulators are the most widely used base components for medium and high voltage transmission and distribution systems and are used for insulation and support of live parts. Composite insulator, is the use of epoxy rod support, silicone rubber umbrella skirt insulation of the polymer composite insulator. The product compared with the traditional ceramic, glass insulators, with a light weight (only the same use of traditional insulators 1/4 to 1/8), high strength (pull rod tensile strength and bending strength are high-strength porcelain More than 10 times), anti-fouling less cleaning (silicone rubber has a unique strong hydrophobic) of the significant advantages, while overcoming the conventional polymer material aging life problems can be safely used for decades, is the power system to promote the use of new Generation products. This product is a new type of wall bushing, in line with the power sector without oil, miniaturization of the development trend, is to meet the requirements of urban and rural power grid transformation of a new generation of high-pressure products.
Use and implementation of standards
This product is used in AC 220kV and below power generation, transmission, substation, power distribution system, for the live part of the insulation and support.
Conditions of use
Ambient temperature: not higher than +40 ℃, not less than -40 ℃;
Altitude: no more than 1000m; (1000m above can be amended according to GB311.1-1997)
Power frequency: not more than 100Hz;
Mechanical load: no more than the rated value of each product.
Model definition
| Serial number | Model | Rated voltage（kV） | Rated current (A) | Lightning impulse withstand voltage (peak)（kV） | 1min power frequency withstand voltage (kV) | Bending load（N） | Allowable bending load（N） |
| 1 | FCGW-10/20 0 ～ 630 | 10 | 200 ～ 630 | 75 | 30 | 1250 | 625 |
| 2 | FCGW-35/630 ～ 1600 | 35 | 630 ～ 1600 | 80 | 80 | 1250 | 625 |
| 3 | FCGW-110/630 ～ 1600 | 110 | 630 ～ 1600 | 230 | 230 | 1250 | 625 |
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