Address
Nanzhai village, Liushi Town, yueqingCity, zhejiang Province, china
Tel
+86-13375775325
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Introduction:
The 11kV Pin-Type Composite Insulator is a high-performance insulating device designed for medium-voltage overhead power lines. It comprises a robust, lightweight, and durable structure optimized for electrical and mechanical reliability. The insulator features a distinct three-shed profile (Large-Small-Large configuration) molded in grey high-temperature vulcanized (HTV) silicone rubber. This shed arrangement effectively increases the creepage path to 450mm, ensuring superior insulation performance in polluted, humid, or saline environments. The insulator is designed to withstand a rated bending load of 3kN, providing secure support for live conductors while isolating them from grounded structures such as poles or crossarms. Its core construction includes a high-strength fiberglass reinforced polymer (FRP) rod, which provides the primary mechanical backbone, and two galvanized steel end fittings (a pin at the bottom for mounting and a clevis or socket at the top for conductor attachment). The composite design offers a modern, efficient, and maintenance-light alternative to traditional porcelain or glass insulators.
Drawings:
Specifications:
Product Type: | FPQ-10-5 three sheds |
Height(mm): | 252± 10 |
Min Dry Arcing Distance(mm): | 210 |
Min Creepage Distance(mm): | 450 |
Diameter of the rod(mm): | 24 |
Number of sheds: | 3 |
Sheds of diameter(mm): | 145/110 |
Screw diameter/ Screw length(mm): | 20~22/40~300 |
Rated Bending Load(kN): | 5 |
Rated Voltage(kV): | 11 |
Lightning Impulse Withstand Voltage(kV): | 105 |
Power Frequency Withstand Voltage(kV): | 50 |
Key Features:
This pin insulator has a lot of features as below
Superior Pollution & Contamination Performance: The silicone rubber housing provides excellent and persistent hydrophobicity. This property prevents the formation of continuous water films, dramatically reducing surface leakage currents and the risk of flashover. The 450mm creepage distance is highly effective in polluted, coastal, or industrial areas.
Optimized Three-Shed Design: The “Large-Small-Large” shed profile effectively increases the leakage distance, promotes rain washing, and prevents bridging between sheds. It also offers better electrical field distribution and enhanced self-cleaning capabilities compared to simple, uniform sheds.
High Mechanical Strength & Lightweight: The fiberglass-reinforced epoxy (FRP) rod provides exceptional tensile and bending strength, rated for a 3kN cantilever load. Despite its strength, the composite insulator is up to 90% lighter than equivalent porcelain insulators, simplifying transportation, handling, and installation, thereby reducing labor costs.
Excellent Durability & Weather Resistance: The HTV silicone rubber is highly resistant to ultraviolet (UV) radiation, ozone, and extreme temperature fluctuations. It offers strong anti-aging properties, maintaining performance for decades with minimal degradation. The metal end fittings are hot-dip galvanized for superior corrosion protection.
Vandalism & Impact Resistant: Unlike brittle ceramic or glass, the polymer housing is much more resistant to damage from gunshot, impact, or vandalism, increasing grid reliability and reducing replacement costs.
Production Process (Typical):
We produce this pin polymer insulator according to strict process.
Core Rod & Fittings Preparation: High-strength glass fibers are impregnated with epoxy resin and pultruded to form the FRP core rod. Galvanized steel end fittings (pin and socket/clevis) are machined and prepared.
End Fitting Assembly: The FRP rod ends are precisely inserted into the metal end fittings. A critical crimping or swaging process is performed under high pressure, creating a permanent, high-strength mechanical and chemical bond. The interface is often sealed with an adhesive.
Rubber Formulation & Molding: High-quality HTV (High-Temperature Vulcanizing) silicone rubber compound is prepared. The assembled core rod is placed in an injection mold that defines the insulator's shape, including the three-shed profile. The rubber is injected into the heated mold cavity under pressure, encasing the core rod and forming a seamless, homogeneous housing.
Vulcanization (Curing): The mold is heated to a specific temperature for a controlled period, causing the silicone rubber to vulcanize (cure). This cross-links the polymer chains, giving the rubber its final mechanical strength, flexibility, and hydrophobic properties.
Finishing & Quality Control: After demolding, any minor flash is trimmed. Each insulator undergoes a rigorous inspection protocol, including:
Dimensional Check: Verifying length, diameter, and creepage distance (450mm).
Mechanical Load Test: Subjecting a sample batch to a proof load test (typically 50% higher than the rated 3kN, e.g., 4.5kN) to ensure structural integrity.
Electrical Tests: Performing power frequency withstand voltage and impulse withstand voltage tests as per IEC 60383 or relevant standards to verify the insulation rating for 11kV systems.
Visual Inspection: Checking for surface defects, proper bonding, and overall workmanship.
Application Scenarios:
This high voltage insulator is primarily designed for 11kV (Medium Voltage) Overhead Distribution Networks. Its key application scenarios include:
Distribution Line Support: Serving as a pin insulator on crossarms of wooden, concrete, or steel poles to insulate and support the primary conductors.
Polluted & Harsh Environments: Ideal for installation in coastal regions (salt fog), industrial areas (chemical pollution), deserts (sand and dust), and regions with high humidity or frequent fog, where its hydrophobic properties and long creepage distance are most beneficial.
Urban and Rural Networks: Suitable for both dense urban distribution grids and expansive rural electrification projects due to its reliability and low maintenance needs.
Retrofitting Projects: An excellent replacement for aging or underperforming porcelain or glass pin insulators, often allowing for direct replacement without structural modifications to the pole.
Light Rail (Traction) and Mining Power Supplies: Used in specialized 11kV-15kV power supply systems for railways and mining operations where robust performance is required.
Company Strength:
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Introduction:
The 11kV Pin-Type Composite Insulator is a high-performance insulating device designed for medium-voltage overhead power lines. It comprises a robust, lightweight, and durable structure optimized for electrical and mechanical reliability. The insulator features a distinct three-shed profile (Large-Small-Large configuration) molded in grey high-temperature vulcanized (HTV) silicone rubber. This shed arrangement effectively increases the creepage path to 450mm, ensuring superior insulation performance in polluted, humid, or saline environments. The insulator is designed to withstand a rated bending load of 3kN, providing secure support for live conductors while isolating them from grounded structures such as poles or crossarms. Its core construction includes a high-strength fiberglass reinforced polymer (FRP) rod, which provides the primary mechanical backbone, and two galvanized steel end fittings (a pin at the bottom for mounting and a clevis or socket at the top for conductor attachment). The composite design offers a modern, efficient, and maintenance-light alternative to traditional porcelain or glass insulators.
Drawings:
Specifications:
Product Type: | FPQ-10-5 three sheds |
Height(mm): | 252± 10 |
Min Dry Arcing Distance(mm): | 210 |
Min Creepage Distance(mm): | 450 |
Diameter of the rod(mm): | 24 |
Number of sheds: | 3 |
Sheds of diameter(mm): | 145/110 |
Screw diameter/ Screw length(mm): | 20~22/40~300 |
Rated Bending Load(kN): | 5 |
Rated Voltage(kV): | 11 |
Lightning Impulse Withstand Voltage(kV): | 105 |
Power Frequency Withstand Voltage(kV): | 50 |
Key Features:
This pin insulator has a lot of features as below
Superior Pollution & Contamination Performance: The silicone rubber housing provides excellent and persistent hydrophobicity. This property prevents the formation of continuous water films, dramatically reducing surface leakage currents and the risk of flashover. The 450mm creepage distance is highly effective in polluted, coastal, or industrial areas.
Optimized Three-Shed Design: The “Large-Small-Large” shed profile effectively increases the leakage distance, promotes rain washing, and prevents bridging between sheds. It also offers better electrical field distribution and enhanced self-cleaning capabilities compared to simple, uniform sheds.
High Mechanical Strength & Lightweight: The fiberglass-reinforced epoxy (FRP) rod provides exceptional tensile and bending strength, rated for a 3kN cantilever load. Despite its strength, the composite insulator is up to 90% lighter than equivalent porcelain insulators, simplifying transportation, handling, and installation, thereby reducing labor costs.
Excellent Durability & Weather Resistance: The HTV silicone rubber is highly resistant to ultraviolet (UV) radiation, ozone, and extreme temperature fluctuations. It offers strong anti-aging properties, maintaining performance for decades with minimal degradation. The metal end fittings are hot-dip galvanized for superior corrosion protection.
Vandalism & Impact Resistant: Unlike brittle ceramic or glass, the polymer housing is much more resistant to damage from gunshot, impact, or vandalism, increasing grid reliability and reducing replacement costs.
Production Process (Typical):
We produce this pin polymer insulator according to strict process.
Core Rod & Fittings Preparation: High-strength glass fibers are impregnated with epoxy resin and pultruded to form the FRP core rod. Galvanized steel end fittings (pin and socket/clevis) are machined and prepared.
End Fitting Assembly: The FRP rod ends are precisely inserted into the metal end fittings. A critical crimping or swaging process is performed under high pressure, creating a permanent, high-strength mechanical and chemical bond. The interface is often sealed with an adhesive.
Rubber Formulation & Molding: High-quality HTV (High-Temperature Vulcanizing) silicone rubber compound is prepared. The assembled core rod is placed in an injection mold that defines the insulator's shape, including the three-shed profile. The rubber is injected into the heated mold cavity under pressure, encasing the core rod and forming a seamless, homogeneous housing.
Vulcanization (Curing): The mold is heated to a specific temperature for a controlled period, causing the silicone rubber to vulcanize (cure). This cross-links the polymer chains, giving the rubber its final mechanical strength, flexibility, and hydrophobic properties.
Finishing & Quality Control: After demolding, any minor flash is trimmed. Each insulator undergoes a rigorous inspection protocol, including:
Dimensional Check: Verifying length, diameter, and creepage distance (450mm).
Mechanical Load Test: Subjecting a sample batch to a proof load test (typically 50% higher than the rated 3kN, e.g., 4.5kN) to ensure structural integrity.
Electrical Tests: Performing power frequency withstand voltage and impulse withstand voltage tests as per IEC 60383 or relevant standards to verify the insulation rating for 11kV systems.
Visual Inspection: Checking for surface defects, proper bonding, and overall workmanship.
Application Scenarios:
This high voltage insulator is primarily designed for 11kV (Medium Voltage) Overhead Distribution Networks. Its key application scenarios include:
Distribution Line Support: Serving as a pin insulator on crossarms of wooden, concrete, or steel poles to insulate and support the primary conductors.
Polluted & Harsh Environments: Ideal for installation in coastal regions (salt fog), industrial areas (chemical pollution), deserts (sand and dust), and regions with high humidity or frequent fog, where its hydrophobic properties and long creepage distance are most beneficial.
Urban and Rural Networks: Suitable for both dense urban distribution grids and expansive rural electrification projects due to its reliability and low maintenance needs.
Retrofitting Projects: An excellent replacement for aging or underperforming porcelain or glass pin insulators, often allowing for direct replacement without structural modifications to the pole.
Light Rail (Traction) and Mining Power Supplies: Used in specialized 11kV-15kV power supply systems for railways and mining operations where robust performance is required.
Company Strength:
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