Product Video
1 / 1
27.5kV Rod Suspension Composite Insulator for Electrified Railway Systems
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 27.5kV rod suspension composite insulator is a railway-grade insulation component used in traction power supply systems, catenary suspension systems, cantilever structures and overhead railway lines. It combines excellent electrical insulation performance with stable mechanical strength and environmental resistance.
Main advantages include:
High-temperature vulcanized silicone rubber housing with excellent hydrophobicity and anti-pollution performance.
Epoxy fiberglass core rod for stable tensile strength and mechanical reliability.
Strong metal end fittings suitable for vibration and dynamic load conditions in railway systems.
Lightweight structure for easier transportation, installation and maintenance.
Suitable for coastal, polluted, humid, high-UV and harsh outdoor environments.
Core Features
High electrical insulation performance
The 27.5kV rod suspension composite insulator provides reliable insulation distance, power frequency withstand performance and impulse withstand capability for electrified railway systems.Excellent anti-pollution performance
The silicone rubber surface offers strong hydrophobicity and hydrophobicity transfer, helping reduce flashover risks in dusty, salty, humid and polluted environments.Stable mechanical strength
The fiberglass core rod provides high tensile strength and stable load-bearing performance under long-term railway catenary operation.Lightweight design
Compared with porcelain insulators, composite insulators are lighter, making installation easier and reducing the structural load on brackets and support systems.Aging and corrosion resistance
The silicone rubber housing has good resistance to UV, ozone, tracking, erosion and outdoor weathering.Easy installation and maintenance
The compact structure and customizable metal fittings allow the product to match different railway project requirements.
Product Structure
The 27.5kV rod suspension composite insulator usually consists of the following parts:
Fiberglass core rod
The main load-bearing component, providing mechanical tensile strength and structural support.Silicone rubber housing
The external insulation layer that protects the core rod and improves weather, moisture and pollution resistance.Insulating sheds
The shed profile increases creepage distance and improves operating safety in polluted environments.Metal end fittings
Usually made of hot-dip galvanized steel or customized metal materials, used for connection with catenary supports, suspension devices and line hardware.Sealing system
Reliable sealing between the housing and end fittings prevents moisture ingress and improves long-term service reliability.
Technical Specifications
| Item | Technical Data |
|---|---|
| Product Name | 27.5kV Rod Suspension Composite Insulator |
| Voltage Rating | 27.5kV |
| Application System | Electrified railway traction power supply and catenary system |
| Insulation Material | High-temperature vulcanized silicone rubber |
| Core Material | Epoxy fiberglass core rod |
| End Fitting Material | Hot-dip galvanized steel or customized material |
| Structure Type | Rod suspension composite insulator |
| Typical Application | Catenary suspension, cantilever system, railway power line |
| Rated Mechanical Tensile Load | Customized according to project requirements |
| Creepage Distance | Customized according to pollution level and design requirements |
| Shed Design | Alternating sheds or equal-diameter sheds available |
| Operating Environment | Outdoor, polluted, humid, coastal and high-UV environments |
| Installation Method | Suspension mounting with metal fittings |
| Product Color | Grey, red or customized |
| Applicable Standards | IEC 61109, IEC 62217 or project technical specifications |
Product Structure
Main Applications
The 27.5kV rod suspension composite insulator is commonly used in:
Electrified railway catenary systems
Used for insulation and support of messenger wires, contact wires and suspension structures.High-speed railway traction power systems
Suitable for railway projects requiring high insulation reliability and stable mechanical performance.Conventional railway electrification upgrades
Used for replacing porcelain insulators or aging insulation components in railway renovation projects.Intercity railway and urban rail transit systems
Suitable for traction power supply facilities in intercity railways and metro-related systems.Coastal and polluted railway lines
Designed for salt fog, humidity, industrial pollution, sand and dust environments.Railway substations and feeder line sections
Suitable for outdoor traction substation lines, feeder arms and related insulation support positions.
Testing Capability
Wishpower can perform related tests for 27.5kV rod suspension composite insulators according to project requirements to ensure reliable operation in railway power systems.
Visual and dimensional inspection
Checks the appearance, shed profile, fitting dimensions and overall assembly quality.Power frequency withstand test
Verifies insulation performance under specified voltage conditions.Lightning impulse withstand test
Evaluates insulation reliability under impulse overvoltage conditions.Mechanical tensile test
Tests the load-bearing capability of the core rod, end fittings and complete insulator structure.Hydrophobicity test
Checks the surface hydrophobicity and anti-pollution performance of the silicone rubber housing.Sealing performance inspection
Verifies the sealing reliability between the end fittings and insulating body to reduce moisture ingress risk.Aging and weathering test
Evaluates long-term outdoor performance through UV, humidity, heat and salt fog testing.
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: 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.
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: 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.
