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High Voltage Drop Out Fuse for Outdoor Distribution Lines
Factory: We are a professional manufacturer providing OEM custom production services.
- Product Overview
- Technical Specifications
- Product Structure
- Applications
- Testing Capability
- Packaging & Customization
Product Overview
A high voltage drop out fuse is a commonly used protection device for outdoor power distribution systems. It is designed to protect overhead lines, distribution transformers, and branch circuits from overload and short-circuit faults. Wishpower high voltage drop out fuse offers reliable insulation, stable operation, and convenient maintenance for medium-voltage distribution networks.
The product is generally composed of an insulating support, upper contact, lower contact, fuse tube, mounting bracket, operating ring, and fuse link. It is widely used for 10kV, 11kV, 15kV, 24kV, 27kV, and 33kV distribution systems.
Wishpower product advantages:
High-strength insulating support with reliable mechanical performance
Suitable for long-term outdoor operation in harsh environments
Clear drop-out indication for fast fault identification
Compact structure and easy installation on overhead lines
Suitable for transformer protection and branch line protection
Customizable voltage rating, current rating, and mounting dimensions
Core Features
Reliable Line Protection
The high voltage drop out fuse interrupts overload and short-circuit faults quickly, helping isolate faulty sections and reduce the impact on the power network.Visible Disconnect Point
After the fuse link operates, the fuse tube drops down and provides a clear visual indication of the faulted circuit.Excellent Insulation Performance
The product can be supplied with porcelain insulation or composite insulation to meet different outdoor application requirements.Easy Operation and Maintenance
Operators can use an insulated operating pole to open, close, or replace the fuse tube safely and efficiently.Wide Application Range
It is suitable for overhead distribution lines, branch circuits, distribution transformers, capacitor banks, and rural power grids.Strong Outdoor Weather Resistance
The fuse cutout is suitable for high temperature, low temperature, humidity, coastal areas, polluted areas, and strong UV environments.
Product Structure
The high voltage drop out fuse mainly consists of the following components:
Insulating Support
Provides mechanical support and electrical insulation between the live parts and the mounting bracket. Porcelain or composite insulation can be selected.Upper Contact Assembly
Connects with the upper end of the fuse tube and ensures stable electrical contact during normal operation.Lower Contact Assembly
Supports the lower end of the fuse tube and acts as the pivot point for the drop-out action.Fuse Tube
Contains the fuse link and drops down automatically after the fuse link melts under fault current.Fuse Link
Selected according to the rated current and protection requirement. It provides overload and short-circuit protection.Mounting Bracket
Used to install the fuse on a crossarm, pole, or support structure. Hot-dip galvanized steel is commonly used for corrosion resistance.Operating Ring
Allows safe manual operation using an insulated operating pole.
Technical Specifications
| Item | Common Specification |
|---|---|
| Product Name | High Voltage Drop Out Fuse |
| Brand | Wishpower |
| Rated Voltage | 10kV, 11kV, 15kV, 24kV, 27kV, 33kV |
| Rated Current | 100A, 200A, 300A |
| Rated Frequency | 50Hz / 60Hz |
| Rated Breaking Current | 8kA, 10kA, 12.5kA, 16kA |
| Insulation Type | Porcelain Insulation / Composite Insulation |
| Fuse Tube Type | Standard Type / Rainproof Type / Heavy-Duty Type |
| Installation Method | Crossarm Mounting, Pole Mounting, Bracket Mounting |
| Service Environment | Outdoor |
| Applicable System | Overhead Distribution Line, Distribution Transformer, Branch Line |
| Metal Surface Treatment | Hot-Dip Galvanized |
| Operation Method | Manual Operation with Insulated Operating Pole |
| Custom Options | Voltage Rating, Current Rating, Mounting Size, Insulation Structure |
Product Structure
Main Applications
High voltage drop out fuse is commonly used in:
Overhead distribution line protection
Primary-side protection of distribution transformers
Rural power grid branch line protection
Urban distribution network sectional protection
Industrial and mining power distribution systems
Wind farm collection line protection
Solar power station distribution systems
High voltage capacitor bank protection
Outdoor distribution lines in coastal, polluted, and humid areas
Testing Capability
Wishpower can conduct a series of quality tests according to project requirements to ensure stable performance in outdoor high voltage distribution systems.
Power Frequency Withstand Voltage Test
Verifies the insulation performance under rated power frequency voltage.Lightning Impulse Withstand Voltage Test
Checks insulation reliability under lightning impulse conditions.Temperature Rise Test
Measures the temperature rise of conductive parts under rated current operation.Mechanical Operation Test
Ensures smooth and reliable opening, closing, and drop-out performance.Breaking Capacity Test
Verifies the fuse operation and interruption performance under fault current.Galvanizing Layer Inspection
Checks the corrosion resistance of metal brackets and fittings.Appearance and Dimension Inspection
Ensures that product appearance, installation dimensions, contact fitting, and assembly structure meet design requirements.Outdoor Weather Resistance Test
For composite insulation structures, UV resistance, aging resistance, and humidity resistance can be tested according to project requirements.
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 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.
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.
