Taking advantage of the rapid development of the current 35kV Composite Deadend insulators, 138kV Composite Line Post Insulator, 45kV Composite Deadend Insulators industry, our company is entering the fast lane of rapid development. On the basis of the original facilities, we continue to invest in new production, environmental protection, and research and development equipment to meet the growing needs of customers and expand market share. Rate, start your own brand! Our logistics team is equipped with the latest technology and tools, ensuring that our clients' orders are delivered on time and in perfect condition. Our customer service team is proactive and responsive, always available to assist our clients with their needs. We offer a wide selection of products to meet a variety of customer needs.
Composite polymer insulators are made of high-quality silicone rubber housing and sheds, providing excellent resistance to tracking, erosion, and harsh environmental conditions. The core rod is manufactured from epoxy fiberglass, delivering superior mechanical performance - with up to 1.5 times the expansion strength of ordinary steel and 3–4 times the tensile strength of porcelain. This ensures outstanding axial tension capability, vibration absorption, and superior seismic performance.
These composite suspension and tension insulators are widely used on overhead transmission lines to provide reliable mechanical support and electrical insulation. Compared with traditional porcelain and glass insulators, composite insulators offer better hydrophobicity and pollution resistance, effectively preventing flashover in contaminated or coastal areas.
The right image shows our composite insulators used on a 400 kV transmission line in Europe, proving their reliable performance in real projects.
Technical Drawings & Dimensions
Our composite long-rod insulators are engineered to meet the specific requirements of each project and comply with international standards. Below, you can find detailed drawings and technical specifications for the FXBW-500kV160 polymer insulator.
| Category | Parameter | Value |
|---|---|---|
| Dimensions | Height | 3350 ± 50 mm |
| Min. Dry Arcing Distance | 3050 mm | |
| Min. Creepage Distance | 10500 mm | |
| Diameter of the Rod | Ø24 mm | |
| Coupling Dimensions | Socket/Ball 20R/20 (IEC 60120) | |
| Number of Sheds | 125 | |
| Raw Materials | End Fitting - Socket | Forged Steel or Cast Steel, Hot Dip Galvanized |
| End Fitting - Ball | Forged Steel, Hot Dip Galvanized | |
| Min. Galvanization Thickness | 86 μm | |
| Split Pin | Stainless Steel | |
| Core Material | Epoxy & Glass Fiber, Acid-Resistant Type | |
| Core Diameter | Ø24 mm | |
| Weather Sheds Material | HTV Silicone | |
| Color | Grey | |
| Grading Ring Material | Aluminum Alloy | |
| Mechanical | Specified Mechanical Load (SML) | 160 kN |
| Routine Test Load (RTL) | 80 kN | |
| Standard | IEC 61109 | |
| Electrical | Rated Voltage | 400 kV |
| Wet Power Frequency Withstand Voltage | 770 kV | |
| Lightning Impulse Withstand Voltage | 1425 kV | |
| Standard | IEC 61109 | |
| Weight | Approx. | 153 kg |
Global Project References
The following shows our composite insulators in service on a 400 kV high-voltage transmission line in Europe. Installed in 2011, they have been operating reliably ever since, proving their excellent performance under harsh conditions.
Certifications & Compliance
This test report focuses on the prototype test of FXBW-500 AC composite suspension insulators supplied by Wuhan Line Power Transmission Equipment Co., Ltd., with all test results complying with GB/T 19519-2014 (IEC 61109:2008, MOD) requirements.
Applicable Standard: GB/T 19519-2014 (equivalent to IEC 61109:2008, MOD).
Test Type: Prototype test covering design tests, material tests, type tests, and sample routine tests.
Key Test Items & Core Results
End Fitting Interface & Connection Tests: Passed sudden load release (165kN/275kN), thermal-mechanical cycles (-35°C to +50°C, 4 cycles), 42h boiling NaCl water immersion, steep-front impulse voltage (1000-1500kV/μs), and dry power-frequency voltage tests (flashover voltage 401.8-402.8kV).
Shed & Housing Material Tests: Hardness reached 65-66 Shore A (≤1.5% post-boiling difference); 1000h UV aging showed no cracks (surface roughness 5.28-6.14μm); passed tracking/erosion (19.7kV, 1000h), flammability (FV-0), and hydrophobicity tests (θav ≥106.1°).
Core Material Tests: Passed dye penetration, 100h boiling water diffusion (leakage current ≤42μA), and stress corrosion withstand tests (377kN, 96h); average mechanical failing load of assembled cores was 740.4kN.
Type & Sample Tests: Met dry/wet lightning impulse withstand voltage (up to +2314kV), corona extinction voltage (404.4kV), and dimensional requirements (insulation length 4450±50mm); mechanical routine tests (275kN, 10s) showed no damage.
Test Institution & Credibility
The test was conducted by the Power Industry Quality Inspection and Test Center for Electric Equipment (affiliated to China Electric Power Research Institute, CNAS-accredited: CNASL0699).
The report is valid with official seals and signatures of compilation, inspection, verification, and approval, ensuring legal and technical authority.
To meet the customers' over-expected gratification, we have our robust crew to offer our best over-all support which includes marketing, income, coming up with, production, excellent managing, packing, warehousing and logistics for 220kv Silicone Rubber Insulator/ Composite Long Rod Tension Insulator. Welcome to contact us and your enquiry will be replied as soon as possible. Moreover, we will make all-out efforts to meet more customers' request with more remarkable and professional dedication, fine technology of color-matching, and a complete variety of raw materials
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