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33kV Pin Type Composite Insulator for High Voltage Overhead Lines
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- Product Overview
- Technical Specifications
- Product Structure
- Applications
- Testing Capability
- Packaging & Customization
Product Overview
Wishpower 33kV pin type composite insulator is designed for overhead transmission and distribution systems. It provides dependable insulation and mechanical support under long-term outdoor operating conditions. The product uses a composite structure to improve weather resistance, pollution resistance, and service reliability.
Key advantages include:
Excellent silicone rubber housing: Provides outstanding hydrophobicity and hydrophobicity transfer performance.
High mechanical strength: The epoxy fiberglass core rod offers reliable tensile, bending, and impact resistance.
Lightweight design: Easier to transport, handle, and install than porcelain insulators.
Strong pollution flashover resistance: Suitable for industrial, coastal, dusty, and high-humidity areas.
Reliable outdoor performance: Compact structure with good vibration and impact resistance.
Low maintenance cost: The surface is less likely to accumulate pollution, reducing cleaning frequency.

Designed for 33kV overhead lines
The insulator is suitable for conductor support and electrical isolation in 33kV distribution networks.Superior silicone rubber insulation
The silicone rubber sheds provide excellent hydrophobic performance, reducing flashover risk in rain, fog, and polluted environments.High-strength core rod
The epoxy fiberglass core rod provides strong mechanical support for overhead conductors.Suitable for harsh outdoor conditions
It can be used in high humidity, salt fog, sand, strong UV exposure, and areas with large temperature variations.Easy installation and lower construction cost
Its lightweight and compact design makes installation easier for both new line construction and old line upgrading.Excellent aging resistance
The composite material offers good resistance to UV radiation, electrical tracking, erosion, and weather aging.
Product Structure
Epoxy Fiberglass Core Rod
The core rod works as the main load-bearing component and provides high mechanical strength and bending resistance.HTV Silicone Rubber Sheds
The silicone rubber housing provides external insulation and improves pollution resistance, tracking resistance, and weather resistance.Hot-Dip Galvanized Metal Fittings
The fittings are used for connection with crossarms, brackets, or conductor clamps and provide strong corrosion resistance.End Sealing System
The sealing structure prevents moisture, dust, and contaminants from entering the interface between the core rod and metal fittings.Integrated Molded Housing
The molded housing improves material bonding and reduces the risk of aging, cracking, and partial discharge.

Technical Specifications
| Model | Rated Voltage | Mech. Tensile | Creepage Distance | Standard |
|---|---|---|---|---|
| FPQ-10/5 | 10kV | 5kN | ≥300mm | IEC 61109 / GB/T 19519 |
| FPQ-11/5 | 11kV | 5kN | ≥320mm | IEC 61109 / ANSI |
| FPQ-15/5 | 15kV | 5kN | ≥450mm | IEC 61109 / ANSI |
| FPQ-20/8 | 20kV | 8kN | ≥560mm | IEC 61109 / GB/T 19519 |
| FPQ-24/8 | 24kV | 8kN | ≥650mm | IEC 61109 / IEC 61952 |
| FPQ-27/10 | 27kV | 10kN | ≥740mm | IEC 61109 / ANSI |
| FPQ-33/10 | 33kV | 10kN | ≥900mm | IEC 61109 / GB/T 19519 |
| FPQ-35/10 | 35kV | 10kN | ≥1015mm | IEC 61109 / GB/T 19519 |
| FPQ-36/12.5 | 36kV | 12.5kN | ≥1100mm | IEC 61109 / IEC 61952 |
Product Structure
Main Applications
The 33kV pin type composite insulator is mainly used in medium and high-voltage overhead power distribution networks.
Typical applications include:
33kV overhead power lines
Urban distribution network upgrades
Rural electrification projects
Industrial power supply lines
Utility distribution projects
Substation incoming and outgoing line support
Coastal and salt-fog areas
Heavy pollution industrial zones
High humidity and high UV environments
Overseas EPC power projects
Suitable industries include:
Power transmission and distribution
Electrical grid construction
Renewable energy grid connection
Industrial and mining power systems
Railway and infrastructure power supply
International power engineering projects
Testing Capability
Packaging & Transportation
To keep products safe during transportation and storage, we use the following packaging methods:
- Individual Packaging: Each product is wrapped with protective film, packed in a high-strength carton, and cushioned with buffer materials.
- Pallet Packaging: Multiple products are fixed on wooden pallets and wrapped with stretch film, suitable for container shipping.
- Export Packaging: Fumigated wooden cases, moisture-proof treatment, and detailed packing lists are provided according to sea freight requirements.
Customization Service
WishPower can provide the following customization options according to customer requirements:
- Structural Dimensions: Adjust overall height, creepage distance, shed quantity, and shed diameter.
- End Fittings: Customize ball-socket, tongue-clevis, eye, or other interface types according to connection requirements.
- Color: Standard gray, with red, yellow, blue, and other colors available subject to MOQ.
- Special Environments: Formulations for extreme cold (-60 C), strong UV exposure, heavy pollution, and other harsh conditions.
- Voltage Classes: Full-range customization from 10kV to 1000kV.
- Marking: Customer logos or model numbers can be molded or printed on the product.
For specific customization requirements, please contact our sales engineers. We will provide a technical solution within 24 hours.
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FAQ
A: Yes. We can provide composite insulators, surge arresters, fuse cutouts, insulating bushings and related power insulation products.
A: Yes. WishPower supports customized voltage ratings, creepage distances, fittings, colors and drawings according to project requirements.
A: Our products can be designed and tested according to IEC, ANSI, GB and customer-specific technical requirements.
A: You can provide voltage level, installation type, mechanical load, creepage distance and operating environment. Our team will recommend the suitable model.
A: Please provide voltage level, product type, quantity, application environment, standard, drawings or technical specifications if available.