Composite Line Post Insulator
High Voltage polymer post insulator for Overhead Distribution Lines
Description
Technical Parameters
Gaodian Technology Co., Ltd. is one of the most reliable manufacturers and suppliers of composite line post insulator in China. With abundant experience, we warmly welcome you to buy advanced composite line post insulator made in China here from our factory. We also accept customized orders.
A line post insulator is a very important component used in overhead power distribution and transmission systems. Its main functions are:
1. Electrical Insulation:
The primary function of a line post insulator is to electrically isolate the conductor from the supporting structure (such as a pole or cross-arm). It prevents current leakage and ensures safe and reliable operation of the power network.
2. Mechanical Support
Line post insulators provide strong mechanical support for overhead conductors. They withstand the weight of the conductor, wind pressure, ice loading, and short-circuit forces while maintaining the required conductor position.
Technical Specification
|
No. |
Model |
Rated Voltage(kV) |
Structure Height (mm) |
Min. Creepage distance(mm) |
Minimum Dry Arc Distance(mm) |
Specified Cantilever Load(kN) SML |
Power Frequency Wet Withstand Voltage(kV) |
Lightning Impulse Withstand Voltage(kV) |
|
1 |
FPS-115/12.5 |
110 |
341 |
1448 |
≥1150 |
12.5 |
275 |
680 |
Product structure
Material & Technology
Component
Material
Core rod
ECR fiberglass core rod
Metal Fittings
Hot-dip Galvanized steel
Housing
HTV Silicone rubber
ECR fiberglass core rod -- made by us
ECR (E-Corrosion Resistant) epoxy fiberglass core rod is made of boron-free ECR glass roving reinforced high-temperature epoxy via continuous pultrusion. Superior acid & salt spray corrosion resistance effectively prevents brittle fracture under stress, ideal for coastal, industrial polluted, DC transmission and railway overhead lines. High tensile strength, excellent insulation, light weight and long outdoor service life.
Hot-dip Galvanized steel-- made by us
All metal fittings of our line post insulators adopt hot-dip galvanized steel technology. Thick and uniform zinc alloy coating provides reliable anti-rust and anti-corrosion performance under coastal salt spray, industrial pollution and rainy weather. The sacrificial zinc layer protects steel substrate even with minor surface abrasion, ensuring long-term stable operation of overhead power lines.
HTV Silicone rubber-- made by us
Our composite line post insulators are manufactured with high-quality HTV silicone rubber housings, providing excellent hydrophobicity, pollution resistance, and long-term outdoor durability. The silicone rubber sheds effectively protect the FRP core from environmental stress while ensuring reliable insulation performance under harsh operating conditions.
operating conditions
|
Item |
Guaranteed value |
|
Altitude |
≤4000 m |
|
Ambient Temperature |
-40℃ ～ +40℃ |
|
Relative Humidity |
Monthly average ≤90%; Daily average ≤95% |
|
Sun Radiation Intensity |
≤0.1 W/cm² (≤1.0 kW/m²) |
|
Wind Speed |
≤35 m/s |
|
Ice Accretion Thickness |
≤10 mm |
|
Pollution Class |
Class e |
applications
Medium voltage distribution lines
Utility pole networks
Industrial power supply systems
Renewable energy distribution
why choose us?
✅ Test report according to IEC, ANSI Standards
✅ In-house manufacturing for all parts of our insulators
✅ Full Routine Inspection Before Shipment, every piece of insulator will undergoes the test.
✅ More than 15years experience with professional engineer, 0 accident
✅ OEM&ODM available
certificates
manufacturing and testing facilities
Payment & Delivery
Payment Term: TT, L/C
Price Term: FOB, CIF, CFR
Delivery Method: By ocean, Air or Overland
Packing: Cartons, Pallet, Export Standard
FAQ
Q: What voltage levels are available for Composite Line Post Insulators?
A: Composite Line Post Insulators can be designed for different voltage applications, including:
11kV, 15kV, 24kV, 33kV, 35kV and above
Customized designs are available according to customer requirements.
Q: Which standards do Composite Line Post Insulators comply with?
A: Our Composite Line Post Insulators are designed according to international standards, including:
IEC 61952 – Composite line post insulators for AC systems
IEC 62217 – Polymer insulators
Customer-specific technical specifications
Testing reports and technical documents can be provided upon request.
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