138kV Power Line Long Rod Silicone Rubber Tension Insulator Product Description This type of composite suspension insulator is the most widely used composite silicone rubber insulator, mainly used for transmission and distribution lines and electrified railway contact networks for high-voltage conductor fixation and insulation. This type of tension insulator is mainly installed in a hanging manner or in a horizontal tension and jumper manner. It mainly bears tensile loads. The connection between the glass drawing rod and the metal fittings utilizes a unique glue-fitting technology, combined with the most advanced pressing technology in China. It features an automatic ultrasonic flaw detection system, ensuring high strength, a sleek appearance, compact size, and lightweight design. The metal fittings are galvanized for corrosion resistance and are interchangeable with those used for ceramic insulators. 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. The color can be customized. The electrical data provided below is for composite line post insulators without corona rings and applies to installations below 220kV when mounted vertically. Wuhan Line Power recommends the installation of corona rings for voltages of 220kV and above. Additional section lengths and creepage distances are available. Please contact our sales agency for details. All dimensions, tolerances, and tests conform to the applicable IEC or ANSI standards. All dimensions are in millimeters (mm). Please specify if inches and pounds are required. We can customize designs according to the end user's requirements.
| Ambient temperature |
AC power supply frequency |
Earthquake intensity |
Altitude |
Maximum wind velocity |
| -40°C~+40°C |
≤100 HZ |
≤8 |
≤1500m |
≤35 m/s |
FEATURES: The silicone rubber housing of the Composite Insulator is formed through whole injection, providing excellent hydrophobicity, hydrophobicity migration, and soil resistance. Additionally, it possesses outstanding electrical insulation properties and aging resistance, effectively preventing pollution flashover accidents to ensure the safe operation of high voltage transmission lines. The modified ECR fiberglass reinforced epoxy resin rod is utilized due to its superior resistance to high temperature, stress corrosion & acid attack. It also exhibits fine damping action, high tensile strength (> 1200Mpa), and resistance to creep and fatigue failure, effectively ensuring the internal insulation quality and mechanical strength of insulators. End fittings are crimped onto the fiberglass rod using a voice-operated displacement type crimper. The silicone rubber insulators produced with this crimping technique demonstrate high mechanical strength and minimal dispersion. By employing advanced automatic overall injection molding techniques and connection methods for production and assembly, as well as computer-controlled crimping procedures monitored by ultrasonic detectors, we can guarantee that each product meets our stringent quality standards. Company Profile Our company prides itself on strong capabilities, competitive pricing, excellent service, and long-term partnerships with numerous enterprises. With high-quality products and exceptional after-sales support, we have earned a solid reputation among customers nationwide. We cordially welcome clients from both domestic and international markets to visit us, make inquiries, and discuss potential business collaborations.
Product structure and advantages Our company specializes in the production of long rod composite insulator for transmission lines. The main structure is composed of rubber, epoxy glass fiber core and metal end fittings. Compared to similar ceramic and glass insulators, silicone rubber insulators offer several advantages: 1. **Compact and Lightweight**: Silicone rubber insulators are 1/7 to 1/10 the weight of equivalent ceramic insulators. They are also highly elastic, durable, and resistant to breakage, making them easy and economical to transport and install. 2. **High Mechanical Strength**: With FRP rods, these insulators boast a tensile strength 5-10 times greater than ceramic materials. Their small core cross-section results in a compact, lightweight product with excellent tensile strength, capable of handling loads above 300KN. 3. **Superior Anti-Pollution and Aging Resistance**: The silicone rubber sheds, made through injection molding, provide excellent hydrophobicity and mobility. This ensures high anti-pollution flashover voltage and robust electrical corrosion resistance. 4. **Ease of Installation and Maintenance**: These insulators are simple to install and maintain, significantly reducing maintenance costs associated with power outages and labor. 5. **Simple Production Process and Quick Delivery**: The straightforward manufacturing process allows for short production times and quick delivery. Exhibition We have been participating in various exhibitions at home and abroad from 2010 to 2019. At the exhibition, relevant people from the industry and us saw our products directly and closely. Certifications We have implemented advanced management and set up a strict quality management system according 1- 1509001 : 200S. All the products' quality requirements comply with IEC61109, IEC61952, IEC62231, G3/T19519-2004,GE/T 22079-200s, DU/T 1048-2007.DL/T810-2002 and TE/T3199.2-200g Standards, etc. Packaging & Shipping All composite insulators are meticulously packaged in weatherproof containers to ensure their protection during transportation by land, air, and sea. We offer several packaging options tailored to different modes of transport and expected storage conditions: Standard grade - prefabricated packing Economical grade - cardboard carton Premium grade - closed wooden crate As customers are most familiar with their specific crate requirements, it is essential for them to carefully select the option that best meets their needs and include this information in their purchasing specifications. Special packaging arrangements can be accommodated upon request. Each container is clearly labeled with the number of insulators it contains, the catalog number, the manufacturer's name, and any other customer requests. Furthermore, each package, whether wooden crates or paper tubes, includes specifications and product certifications attached.
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