Address
Nanzhai village, Liushi Town, yueqingCity, zhejiang Province, china
Tel
+86-13375775325
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Introduction:
The 33 kV Polymer Suspension Insulator is a state‑of‑the‑art insulation device designed for medium‑voltage overhead transmission and distribution networks. It consists of a high‑strength fiber‑glass reinforced polymer (FRP) core rod, a high‑temperature vulcanized (HTV) silicone rubber housing with sheds, and forged‑steel ball‑and‑socket end‑fittings. The insulator is finished in gray and employs a unique 9‑shed configuration alternating in a “one‑large‑two‑small” pattern. With a specified mechanical failing load of 40 kN and a creepage distance of 915 mm, it delivers outstanding electrical insulation, mechanical reliability, and long‑term performance even in polluted or humid environments.
Drawings:
Specifications:
Product Type | Dimensions | Mechanical | Electrical | ||||||||
Height | Mini Dry | Mini | Diameter | Number of | Diameter | Specified | Routine | Rated Voltage | Lightning | Power | |
FXBW-33-40 | 440 ±10 | 345 | 915 | 18 | 9 | 130/90 | 40 | 20 | 33 | 230 | 95 |
Order Information: | |||||||||||
Product Parts Display:
① End Fitting type: Ball
Forged steel and hot dip galvanized,minimum thinkness of the galvanization:86µm
② The thickness of silicone rubber housing is more than 3mm,it is in accordance with IEC standard.
③ The acid-resistance,high terperature-resistance core rod use the materials epoxy & glassfiber.
④ End fitting type: Socket
Forged steel and hot dip galvanized, minimum thinkness of the galvanization:86µm
Key Features:
This Composite Tension Insulator has a lot of features as below:
Optimized Creepage Design: A total creepage distance of 915 mm provides an extended leakage current path, significantly enhancing pollution and flashover resistance for 33 kV systems.
Superior Shed Profile: The 9‑shed, “one‑large‑two‑small” alternating design effectively disrupts water flow, prevents bridging under contaminated conditions, and promotes rapid drying, ensuring consistent hydrophobicity.
High Mechanical Strength: Rated for a mechanical tensile load of 40 kN, the insulator offers robust support for conductors and hardware under wind, ice, and dynamic loads.
Advanced Material System:
Core: High‑strength, corrosion‑resistant FRP rod with excellent tensile strength and fatigue resistance.
Housing & Sheds: HTV silicone rubber with permanent hydrophobicity, superior UV resistance, and excellent tracking and erosion performance.
End‑Fittings: Hot‑dip galvanized forged‑steel ball‑and‑socket connections, providing flexible articulation, high strength, and corrosion protection.
Lightweight & Durable: Significantly lighter than equivalent porcelain or glass insulators, reducing structural load. The composite design is immune to cracking or shattering from impact or thermal shock.
Excellent Electrical Properties: Low and stable partial discharge levels, high dielectric strength, and resistance to aging under continuous electrical stress.
Production Process:
We produce this transmission line insulators according to strict production process.
Material Preparation & Inspection: High‑grade raw materials—FRP rods, HTV silicone rubber compounds, and forged‑steel fittings—are rigorously inspected for conformity.
Core Rod Treatment: The FRP rod is cleaned, surface‑treated, and coated with a proprietary adhesive to ensure perfect bonding with the rubber.
Injection Molding & Vulcanization: The rod is placed in a precision mold that defines the “one‑large‑two‑small” shed profile. Liquid silicone rubber is injected under controlled pressure and temperature. The unit is then vulcanized in an oven, where heat and pressure cure the rubber, forming a monolithic, inseparable interface with the core rod.
Fitting Assembly: The galvanized ball and socket end‑fittings are precisely aligned and attached to the rod ends using a controlled compression (crimping) or adhesive‑bonding process, creating a permanent, high‑strength joint.
Quality Control & testing:
Mechanical Testing: Routine sample tests to verify the specified mechanical failing load (≥40 kN).
Electrical Testing: Includes power‑frequency withstand voltage, lightning‑impulse withstand voltage, and partial discharge measurement per relevant standards (e.g., IEC 61109).
Material & Performance Tests: Hydrophobicity classification (HC), tracking and erosion resistance tests, and dimensional accuracy checks.
Visual Inspection: Final thorough inspection for any surface defects or imperfections.
Application Scenarios:
This high voltage composite insulator can be applied to many scenarios.
33 kV Overhead Distribution Lines: Primarily used on distribution lines in coastal, industrial, desert, or heavily polluted areas where salt, dust, cement, or chemical deposits are prevalent.
Substation Busbars & Equipment: Suitable for insulating busbars, disconnect switches, and other equipment within 33 kV substations, offering space savings and improved contamination performance.
Renewable Energy Grid Connection: Ideal for overhead lines connecting wind or solar farms to the grid, especially in demanding environments with wide temperature variations and high UV exposure.
Railway Electrification: Used in 33 kV supply lines for railway traction power systems, providing reliable insulation under constant vibration and varied weather conditions.
Network Upgrading & Retrofit: An excellent direct replacement for aging porcelain or glass insulators in existing 33 kV networks, offering enhanced performance, reduced maintenance, and easier handling due to its lightweight construction.
In‑Service Advantages:
Maintains Hydrophobicity: The silicone rubber surface retains and migrates hydrophobic properties, minimizing leakage current and preventing dry‑band arcing.
Vandal‑Resistant: Non‑brittle composite construction resists damage from gunshots or impacts.
Easy Installation & Maintenance: The ball‑and‑socket design allows for flexible articulation during installation, accommodating line angles. Its lightweight nature reduces installation time and cost. It requires minimal maintenance—typically only periodic visual inspections.
Long Service Life: Engineered for a service life exceeding 30 years under typical operating conditions, providing a highly cost‑effective solution over its lifetime.
Two Ends Of Connecting Hardware List
| Attachedto the letter | WQ | WD | WU | CT | TT | UU | YQ | RR | |
| On behalfof fittings | Socket -Ball | Socket -Tongue | Socket- Clevis | Ball- Bal | Clevis-Tongue | Tongue-Tongue | Clevis- Clevis | Y-Ball | Ring-Ring |
| Connectionmark | 16-16 | 16-7 | 16-7 | 16-16 | 7-7 | 7-7 | 7-7 | 7-7 | 7-7 |
1. According to the requirements of hardware in models are indicated in the attached letter;
2. According to the requirements of users can formulate and match ends fitting;
3. Silicone rubber color gray as the default,can also choose the other colors.
4. Custom made according to customer's drawings
 |  |
 |  |
 |  |  |
Introduction:
The 33 kV Polymer Suspension Insulator is a state‑of‑the‑art insulation device designed for medium‑voltage overhead transmission and distribution networks. It consists of a high‑strength fiber‑glass reinforced polymer (FRP) core rod, a high‑temperature vulcanized (HTV) silicone rubber housing with sheds, and forged‑steel ball‑and‑socket end‑fittings. The insulator is finished in gray and employs a unique 9‑shed configuration alternating in a “one‑large‑two‑small” pattern. With a specified mechanical failing load of 40 kN and a creepage distance of 915 mm, it delivers outstanding electrical insulation, mechanical reliability, and long‑term performance even in polluted or humid environments.
Drawings:
Specifications:
Product Type | Dimensions | Mechanical | Electrical | ||||||||
Height | Mini Dry | Mini | Diameter | Number of | Diameter | Specified | Routine | Rated Voltage | Lightning | Power | |
FXBW-33-40 | 440 ±10 | 345 | 915 | 18 | 9 | 130/90 | 40 | 20 | 33 | 230 | 95 |
Order Information: | |||||||||||
Product Parts Display:
① End Fitting type: Ball
Forged steel and hot dip galvanized,minimum thinkness of the galvanization:86µm
② The thickness of silicone rubber housing is more than 3mm,it is in accordance with IEC standard.
③ The acid-resistance,high terperature-resistance core rod use the materials epoxy & glassfiber.
④ End fitting type: Socket
Forged steel and hot dip galvanized, minimum thinkness of the galvanization:86µm
Key Features:
This Composite Tension Insulator has a lot of features as below:
Optimized Creepage Design: A total creepage distance of 915 mm provides an extended leakage current path, significantly enhancing pollution and flashover resistance for 33 kV systems.
Superior Shed Profile: The 9‑shed, “one‑large‑two‑small” alternating design effectively disrupts water flow, prevents bridging under contaminated conditions, and promotes rapid drying, ensuring consistent hydrophobicity.
High Mechanical Strength: Rated for a mechanical tensile load of 40 kN, the insulator offers robust support for conductors and hardware under wind, ice, and dynamic loads.
Advanced Material System:
Core: High‑strength, corrosion‑resistant FRP rod with excellent tensile strength and fatigue resistance.
Housing & Sheds: HTV silicone rubber with permanent hydrophobicity, superior UV resistance, and excellent tracking and erosion performance.
End‑Fittings: Hot‑dip galvanized forged‑steel ball‑and‑socket connections, providing flexible articulation, high strength, and corrosion protection.
Lightweight & Durable: Significantly lighter than equivalent porcelain or glass insulators, reducing structural load. The composite design is immune to cracking or shattering from impact or thermal shock.
Excellent Electrical Properties: Low and stable partial discharge levels, high dielectric strength, and resistance to aging under continuous electrical stress.
Production Process:
We produce this transmission line insulators according to strict production process.
Material Preparation & Inspection: High‑grade raw materials—FRP rods, HTV silicone rubber compounds, and forged‑steel fittings—are rigorously inspected for conformity.
Core Rod Treatment: The FRP rod is cleaned, surface‑treated, and coated with a proprietary adhesive to ensure perfect bonding with the rubber.
Injection Molding & Vulcanization: The rod is placed in a precision mold that defines the “one‑large‑two‑small” shed profile. Liquid silicone rubber is injected under controlled pressure and temperature. The unit is then vulcanized in an oven, where heat and pressure cure the rubber, forming a monolithic, inseparable interface with the core rod.
Fitting Assembly: The galvanized ball and socket end‑fittings are precisely aligned and attached to the rod ends using a controlled compression (crimping) or adhesive‑bonding process, creating a permanent, high‑strength joint.
Quality Control & testing:
Mechanical Testing: Routine sample tests to verify the specified mechanical failing load (≥40 kN).
Electrical Testing: Includes power‑frequency withstand voltage, lightning‑impulse withstand voltage, and partial discharge measurement per relevant standards (e.g., IEC 61109).
Material & Performance Tests: Hydrophobicity classification (HC), tracking and erosion resistance tests, and dimensional accuracy checks.
Visual Inspection: Final thorough inspection for any surface defects or imperfections.
Application Scenarios:
This high voltage composite insulator can be applied to many scenarios.
33 kV Overhead Distribution Lines: Primarily used on distribution lines in coastal, industrial, desert, or heavily polluted areas where salt, dust, cement, or chemical deposits are prevalent.
Substation Busbars & Equipment: Suitable for insulating busbars, disconnect switches, and other equipment within 33 kV substations, offering space savings and improved contamination performance.
Renewable Energy Grid Connection: Ideal for overhead lines connecting wind or solar farms to the grid, especially in demanding environments with wide temperature variations and high UV exposure.
Railway Electrification: Used in 33 kV supply lines for railway traction power systems, providing reliable insulation under constant vibration and varied weather conditions.
Network Upgrading & Retrofit: An excellent direct replacement for aging porcelain or glass insulators in existing 33 kV networks, offering enhanced performance, reduced maintenance, and easier handling due to its lightweight construction.
In‑Service Advantages:
Maintains Hydrophobicity: The silicone rubber surface retains and migrates hydrophobic properties, minimizing leakage current and preventing dry‑band arcing.
Vandal‑Resistant: Non‑brittle composite construction resists damage from gunshots or impacts.
Easy Installation & Maintenance: The ball‑and‑socket design allows for flexible articulation during installation, accommodating line angles. Its lightweight nature reduces installation time and cost. It requires minimal maintenance—typically only periodic visual inspections.
Long Service Life: Engineered for a service life exceeding 30 years under typical operating conditions, providing a highly cost‑effective solution over its lifetime.
Two Ends Of Connecting Hardware List
| Attachedto the letter | WQ | WD | WU | CT | TT | UU | YQ | RR | |
| On behalfof fittings | Socket -Ball | Socket -Tongue | Socket- Clevis | Ball- Bal | Clevis-Tongue | Tongue-Tongue | Clevis- Clevis | Y-Ball | Ring-Ring |
| Connectionmark | 16-16 | 16-7 | 16-7 | 16-16 | 7-7 | 7-7 | 7-7 | 7-7 | 7-7 |
1. According to the requirements of hardware in models are indicated in the attached letter;
2. According to the requirements of users can formulate and match ends fitting;
3. Silicone rubber color gray as the default,can also choose the other colors.
4. Custom made according to customer's drawings
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