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35kV Double-Post Windproof Drop-Out Fuse for Outdoor Distribution Protection
Factory: We are a professional manufacturer providing OEM custom production services.
- Product Overview
- Technical Specifications
- Product Structure
- Applications
- Testing Capability
- Packaging & Customization
Product Overview
The 35kV double-post windproof drop-out fuse is designed for medium- and high-voltage outdoor distribution systems. It is commonly installed on overhead distribution lines, transformer primary sides, and outdoor feeder branches. When overload or short-circuit faults occur, the fuse link melts quickly and the fuse tube drops down to provide a visible isolation point. With a reinforced double-post windproof structure, this product offers better stability under strong wind, vibration, and demanding outdoor conditions.
Key advantages include:
Stable double-post support structure
The double-post design improves mechanical stability and reduces movement caused by strong wind or vibration.Windproof design for outdoor service
Suitable for mountainous areas, coastal regions, open fields, rural networks, and other windy installation environments.Visible disconnection after operation
After fuse operation, the fuse tube drops down clearly, allowing maintenance teams to identify faulted sections quickly.Reliable long-term outdoor performance
The fuse can be supplied with polymer or porcelain insulation according to project requirements.Easy installation and maintenance
Compact structure and pole-mounted design help reduce installation time and maintenance difficulty.
Core Features
Suitable for 35kV distribution systems
Designed for 35kV overhead lines, branch feeders, and transformer protection.Strong wind-resistant performance
The double-post structure improves stability under wind load, vibration, and outdoor mechanical stress.Reliable fault interruption
During overload or short-circuit conditions, the fuse link operates and the fuse tube drops to isolate the faulty circuit.Excellent insulation performance
Polymer housing or porcelain housing options are available for different operating environments.Wide environmental adaptability
Suitable for standard outdoor areas, high-altitude regions, polluted areas, coastal zones, and windy locations.Effective sectional protection
Ideal for feeder branches, transformer primary protection, cable protection points, and overhead distribution networks.
Product Structure
A 35kV double-post windproof drop-out fuse usually consists of the following components:
Upper contact assembly: Connects to the line side and ensures stable current conduction.
Lower contact assembly: Supports the conductive circuit and allows fuse tube drop-out operation.
Fuse tube assembly: Holds the fuse link and drops down after fuse operation.
Double-post insulation support: Provides mechanical support and electrical insulation, available in polymer or porcelain type.
Mounting bracket: Used for pole-mounted or outdoor frame-mounted installation.
Windproof limiting structure: Improves the closed-position stability of the fuse tube.
Conductive terminals: Used for connecting overhead conductors or cable leads.
Technical Specifications
| Parameter | Application Range |
|---|---|
| Product Name | 35kV Double-Post Windproof Drop-Out Fuse |
| Rated Voltage | 35kV |
| Applicable System | Outdoor medium- and high-voltage distribution system |
| Product Type | Drop-out, windproof, high voltage, outdoor |
| Structure Type | Double-post support structure |
| Rated Frequency | 50Hz / 60Hz |
| Rated Current | Selectable according to project requirements |
| Breaking Capacity | Configured according to project specifications |
| Insulation Type | Polymer housing or porcelain housing |
| Installation Method | Pole-mounted or outdoor bracket-mounted |
| Protected Equipment | Distribution line, distribution transformer, cable branch |
| Operating Environment | Outdoor, windy area, rural network, mountainous line, coastal region |
| Main Function | Overload protection, short-circuit protection, line isolation |
| Operation Mode | Manual operation with automatic drop-out indication after fuse operation |
| Applicable Standards | Customizable according to IEC, ANSI, or project standards |
Product Structure
Main Applications
The 35kV double-post windproof drop-out fuse is suitable for the following applications:
35kV overhead distribution lines: Used for line sectionalizing, feeder branches, and fault isolation.
Distribution transformer protection: Installed on the high-voltage side of transformers to limit fault expansion.
Outdoor distribution systems: Suitable for long-term outdoor operation in power distribution networks.
Pole-mounted installations: Applicable for utility poles, towers, and outdoor support frames.
Mountainous and coastal lines: Ideal for areas with strong wind and complex environmental conditions.
Rural distribution network upgrades: Used for protection and reliability improvement in rural power grids.
Industrial power supply systems: Suitable for plant feeders, branch lines, and transformer incoming protection.
Renewable energy distribution lines: Applicable to wind power and solar power collection or step-up distribution systems.
Testing Capability
Wishpower can perform multiple tests for 35kV double-post windproof drop-out fuses according to project requirements, helping ensure reliable performance in outdoor distribution networks.
Power frequency withstand voltage test: Verifies insulation reliability under specified voltage conditions.
Lightning impulse withstand test: Checks insulation strength under lightning overvoltage conditions.
Mechanical strength test: Evaluates the stability of the double-post support, mounting bracket, and contact system.
Temperature rise test: Measures conductive circuit performance under rated current.
Breaking performance test: Verifies operation and interruption capability under fault current conditions.
Drop-out operation test: Ensures reliable fuse tube drop-out and visible disconnection after fuse operation.
Windproof stability inspection: Assesses the closed-position stability under wind load and vibration.
Appearance and assembly inspection: Checks galvanizing quality, insulation parts, fasteners, contact condition, and overall assembly.
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: How do I choose the right composite insulator for my project?
A: You can provide voltage level, installation type, mechanical load, creepage distance and operating environment. Our team will recommend the suitable model.
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.
