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24kV–27kV Drop-Out Fuse for Outdoor High Voltage Distribution Protection
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- Product Overview
- Technical Specifications
- Product Structure
- Applications
- Testing Capability
- Packaging & Customization
Product Overview
The 24kV–27kV drop-out fuse is a widely used protective device for medium and high voltage outdoor distribution networks. It is mainly applied to overhead distribution lines, pole-mounted transformers and outdoor power equipment for short-circuit and overload protection. Wishpower 24kV–27kV drop-out fuse is designed with reliable insulation, conductive contacts and fuse tube structure. When a fault current occurs, the fuse element melts and the fuse tube drops down, providing visible fault indication for fast inspection and maintenance.
Wishpower 24kV–27kV drop-out fuse is suitable for outdoor distribution systems with rated voltages from 24kV to 27kV. It can be installed on distribution line branches, transformer primary sides, cable terminals and pole-mounted distribution equipment. According to project requirements, Wishpower can provide polymer housing, porcelain housing, expulsion type and load break type fuse cutouts for different operating environments.
Main advantages include:
Suitable for 24kV and 27kV medium and high voltage distribution networks.
Provides short-circuit and overload protection for distribution systems.
Drop-out structure offers clear visual indication after fuse operation.
Polymer and porcelain insulation options are available.
Designed for outdoor service under rain, UV exposure, pollution and temperature variation.
Compact structure supports easy installation and maintenance.
Ideal for pole-mounted transformer protection and overhead line protection.
Key Features
Reliable Fault Interruption
The fuse isolates faulty circuits when short-circuit or overload current occurs, helping reduce equipment damage and service interruption.Visible Drop-Out Indication
After fuse operation, the fuse tube drops down clearly, allowing maintenance teams to identify the fault position quickly.Outdoor Environmental Performance
The product is suitable for rural networks, urban distribution systems, industrial power supply and outdoor substations.Multiple Structure Options
Polymer housing, porcelain housing, standard expulsion type and load break type designs can be selected according to the project.Easy Maintenance
Fuse links and fuse tubes can be replaced conveniently, reducing maintenance time and operating cost.Transformer Protection Compatibility
It is commonly used on the high voltage side of distribution transformers to isolate transformer faults and protect the main line.
Product Structure
The 24kV–27kV drop-out fuse generally consists of the following parts:
Insulating Support: Polymer insulator or porcelain insulator for electrical insulation and mechanical support.
Upper Contact Assembly: Connects the incoming conductor and ensures stable current transmission.
Lower Contact Assembly: Supports the fuse tube and forms a reliable conductive path.
Fuse Tube: Holds the fuse link and drops down after fuse operation.
Fuse Link: The core protection element selected according to rated current and protection requirements.
Mounting Bracket: Used for pole-mounted, crossarm or outdoor structure installation.
Arc Extinguishing Structure: The expulsion fuse tube helps extinguish the arc during fault interruption.
Operating Ring: Allows operation with an insulated hot stick.
Technical Specifications
| Parameter | Application Range |
|---|---|
| Product Name | 24kV–27kV Drop-Out Fuse |
| Rated Voltage | 24kV, 27kV |
| Product Type | Drop-out type, expulsion type, high voltage type, outdoor type, load break type |
| Insulation Housing | Polymer housing or porcelain housing |
| Applicable System | Medium and high voltage outdoor distribution system |
| Installation Method | Pole-mounted, crossarm-mounted, outdoor structure-mounted |
| Protection Object | Distribution line, distribution transformer, cable branch, outdoor switchgear |
| Service Environment | Outdoor, overhead line, rural network, urban network, industrial distribution system |
| Main Function | Short-circuit protection, overload protection, fault isolation, visible disconnection |
| Operation Method | Insulated hot stick operation |
| Structure Options | Standard drop-out type, load break type, polymer type, porcelain type |
| Maintenance Method | Fuse link or fuse tube replacement |
Product Structure
Main Applications
Wishpower 24kV–27kV drop-out fuse can be widely used in:
Distribution line short-circuit and overload protection
Overhead line branch protection
Substation outgoing distribution protection
Pole-mounted transformer primary-side protection
Outdoor distribution equipment protection
Rural and urban distribution network upgrades
Industrial park power distribution systems
Cable branch and cable terminal protection
Auxiliary distribution lines in wind farms and solar power plants
Polluted, coastal, humid and other harsh outdoor environments
Testing Capability
Wishpower applies strict inspection and quality control procedures for 24kV–27kV drop-out fuse products to ensure stable long-term operation in outdoor distribution systems.
Visual and Structural Inspection: Checks insulators, fittings, contacts, fuse tubes and mounting parts.
Power Frequency Withstand Voltage Test: Verifies insulation performance under rated voltage conditions.
Mechanical Operation Test: Checks fuse tube drop-out, closing action, operating ring and contact alignment.
Contact Performance Test: Ensures stable conductivity of the contact system.
Creepage Distance Inspection: Confirms insulation safety for outdoor polluted environments.
Weather Resistance Inspection: Checks polymer sheds, interfaces and housing performance.
Dimensional and Assembly Inspection: Ensures compatibility with standard pole-mounted installation.
Packaging and Marking Inspection: Confirms product model, voltage rating, rated parameters and batch traceability.
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: 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: 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: 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.
