Name: China 69kv Composite Rubber Line Post Insulator Manufacturers, Suppliers - Factory Direct Wholesale - Line Power
Brand: Line Power
SKU: 225321145

product-1060-749

TECHNICAL DATA

Typical Line Voltage (kV)	Section Length (mm)	Dry Arcing Distance (mm)	Leakage Distance (mm)	Specified Cantilever Load (SCL, kN)	Max. Design Cantilever Load (MDCL, kN)	1min. Power Frequency Withstand Voltage (Wet) (kV)	Lightning Impulse Withstand Voltage (kV)
69	676±15	517	1453	9.5	6.2	175	370

RAW MATERIALS:

End Fittings	Core	Sheds and Housing
Hot dip galvanized cast iron or cast steel	Epoxy & Glass fiber (ECR is available)	HTV Silicone Rubber
Min. thickness of the galvanization: 86μm	Diameter(mm): Φ38, Φ40, Φ55, Φ70, Φ90, Φ120	Color: Grey, Red

Notes:
1. All section lengths are based on vertical & base or bolt end fittings.
2. Below 220kV electrical data shown for composite line post insulators without corona rings and mounted vertically. Wuhan Line Power recommends corona rings to be installed at 220kV and above.
3. Additional section lengths and creepage distances are available. Contact sales agency for details.
4. All dimensions, tolerances and tests are within allowable IEC standards or ANSI standards.
5. All dimensions are in millimeters(mm). If in inches and pounds, please specify.
6. We can design according to the end user's requirements.

Product structure and advantages

Our company is specialized in producing the composite insulators for power transmission lines. The major structure consists of rubber, epoxy glass fiber core and metal end fittings. Compared with similar ceramic and glass insulators, silicone rubber insulators have the following advantages:

(1) Small size, light weight (1/7~1/10 times of porcelain insulators of the same voltage), good elasticity of the shed, not easy to break, easy transportation and installation, economical.

(2) High mechanical strength. Fiberglass reinforced plastic bars have high tensile strength, 5-10 times that of ceramic materials. Core material cross-section is small, the product volume is small, light weight, high tensile strength. It is easy to manufacture large tonnage insulators over 300KN.

(3) High anti-fouling performance, good aging resistance. Silicone rubber injection molding shed has good hydrophobicity and mobility, so that the insulator has a high anti-pollution flashover voltage and good resistance to electrical corrosion.

(4) Easy to install and maintain, which can greatly reduce the maintenance cost caused by power outage and manual labor intensity.

(5) Simple production process and short delivery time.

Translated with www.DeepL.com/Translator (free version)

FEATURES

The silicone rubber shell of the composite line pillar insulator is molded by integral injection molding. It has good hydrophobicity, hydrophobic migration and soil resistance, as well as excellent electrical insulation properties and aging resistance, which can effectively prevent the occurrence of pollution flashover accidents, thus ensuring the safe operation of high-voltage transmission lines.

Modified ECR glass fiber reinforced epoxy resin rods are used because of its good resistance to high temperature, rust and acid erosion, as well as excellent damping effect, high tensile strength (more than 1200Mpa) and resistance to creep and fatigue destructive properties, thus effectively guaranteeing the insulator's internal insulation quality and mechanical strength.

The end joints are crimped onto the fiberglass rods by means of acoustic displacement crimps. Insulators with this crimping technology have high mechanical strength and low dispersion. The most advanced fully automatic integral injection molding technology and crimping connection method are used for production and assembly. The whole crimping process is controlled by computer and the crimping results are monitored by ultrasonic detector to ensure that each product is qualified.