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220kV(252kV) Composite Post Insulator for High Voltage Substations
Factory: We are a professional manufacturer providing OEM custom production services.
- Product Overview
- Technical Specifications
- Product Structure
- Applications
- Testing Capability
- Packaging & Customization
Product Overview
Wishpower 220kV(252kV) composite post insulator is a high voltage insulating support product for 220kV power systems with a maximum system voltage of 252kV. Compared with traditional porcelain post insulators, composite post insulators offer lighter weight, better pollution flashover resistance and stronger seismic performance, making them suitable for modern substations and power equipment upgrades.
Main product advantages include:
High temperature vulcanized silicone rubber housing with excellent hydrophobicity and hydrophobicity transfer.
Epoxy fiberglass core rod with high bending strength and stable mechanical performance.
Reliable metal end fittings for long-term outdoor operation.
Lightweight structure for easier transportation, lifting and installation.
Suitable for high altitude, strong UV, heavy pollution, coastal salt fog and complex outdoor environments.
Core Features
Excellent Pollution Flashover Resistance
The silicone rubber housing provides strong hydrophobic performance, reducing the risk of conductive film formation on polluted surfaces.High Mechanical Strength
The fiberglass core rod provides high bending and tensile strength for 220kV substation equipment support.Lightweight and Easy Installation
Compared with porcelain insulators, composite post insulators are lighter and easier to transport, lift and install.Good Seismic and Impact Resistance
The composite material structure offers better flexibility and toughness for earthquake-prone areas and outdoor high voltage equipment.Strong Aging Resistance
The housing material provides good resistance to UV radiation, tracking, erosion and weathering.Lower Maintenance Cost
The surface has good self-cleaning performance, reducing cleaning frequency and long-term maintenance cost.
Product Structure
The 220kV(252kV) composite post insulator generally consists of the following components:
Silicone Rubber Sheds
The external insulation layer provides creepage distance and weather protection with excellent hydrophobicity.Epoxy Fiberglass Core Rod
The core rod carries the main mechanical load and provides bending, tensile and structural support strength.End Fittings
Usually made of hot-dip galvanized steel or customized metal materials for equipment connection and installation.Sealing System
The end sealing structure prevents moisture ingress into the core rod and fitting interface.Integrated Housing Structure
Injection molding or compression molding improves the bonding strength between the housing and core rod.
Technical Specifications
| Item | Technical Parameter |
|---|---|
| Product Name | 220kV(252kV) Composite Post Insulator |
| Product Type | High Voltage Composite Post Insulator |
| Brand | Wishpower |
| Rated Voltage | 220kV |
| Maximum System Voltage | 252kV |
| Applicable System | High Voltage AC Power System |
| Housing Material | HTV Silicone Rubber |
| Core Rod Material | Epoxy Fiberglass Core Rod |
| End Fitting Material | Hot-Dip Galvanized Steel or Customized Fittings |
| Structure Type | Composite Housing Post Type |
| Installation Method | Vertical Installation or Customized Design |
| Main Function | Equipment Support, Busbar Support, Electrical Insulation |
| Typical Application | Substation, Disconnector, Busbar Support, Power Equipment |
| Creepage Distance | Customized According to Pollution Level and Project Requirements |
| Mechanical Strength | Customized According to Drawings and Technical Agreement |
| Operating Environment | Outdoor, Heavy Pollution, Strong UV, Coastal and High Altitude Areas |
| Standard | IEC, GB or Customer-Specified Standard |
| Color | Grey, Red or Customized |
| Service Life | Designed for Long-Term Outdoor Operation |
Product Structure
Main Applications
The 220kV(252kV) composite post insulator is commonly used in the following applications:
220kV High Voltage Substations
Used for primary equipment support, conductor support and electrical insulation.Disconnector Equipment
Used as an insulating post for disconnectors, withstanding mechanical operation force and insulation requirements.Busbar Support Systems
Suitable for high voltage busbars, rigid busbars and conductive component support.Power Equipment Manufacturing
Applied in high voltage switchgear, instrument transformers, surge arrester support structures and related equipment.Coastal and Heavy Pollution Areas
Suitable for salt fog, industrial pollution and humid environments.High Altitude and Strong UV Areas
Custom designs are available based on altitude, creepage distance and insulation level.
Testing Capability
Wishpower can conduct related tests for 220kV(252kV) composite post insulators according to project requirements to ensure reliable high voltage operation.
Visual and Dimensional Inspection
Checks product appearance, shed molding, fitting dimensions, mounting holes and overall structure.Power Frequency Withstand Voltage Test
Verifies insulation withstand capability under specified voltage conditions.Lightning Impulse Withstand Voltage Test
Simulates lightning impulse conditions to evaluate impulse insulation performance.Mechanical Bending Load Test
Tests bending strength and structural stability under mechanical load.Sealing Performance Inspection
Checks the end sealing system to prevent moisture ingress into the core rod.Hydrophobicity Test
Evaluates the hydrophobic performance of the silicone rubber housing and pollution resistance.Aging and Weather Resistance Test
Assesses UV resistance, damp heat performance, tracking resistance and erosion resistance.Factory Inspection
Each batch can be inspected according to customer technical requirements to ensure stable product quality.
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.
FAQ
Q: Can you supply complete products for transmission and distribution projects?
A: Yes. We can provide composite insulators, surge arresters, fuse cutouts, insulating bushings and related power insulation products.
Q: What information should I provide for a quotation?
A: Please provide voltage level, product type, quantity, application environment, standard, drawings or technical specifications if available.
Q: Can you provide customized insulation products?
A: Yes. WishPower supports customized voltage ratings, creepage distances, fittings, colors and drawings according to project requirements.
Q: What standards can your products meet?
A: Our products can be designed and tested according to IEC, ANSI, GB and customer-specific technical requirements.
Q: Are composite insulators suitable for coastal areas?
A: Yes. Composite insulators with silicone rubber housing provide good hydrophobicity and anti-pollution performance, making them suitable for coastal and polluted environments.
