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HRW5-40.5kV Drop-Out Fuse - Outdoor High Voltage Distribution Protection
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- Product Overview
- Technical Specifications
- Product Structure
- Applications
- Testing Capability
- Packaging & Customization
Product Overview
Wishpower HRW5-40.5kV drop-out fuse is designed for 35kV / 40.5kV distribution networks. It provides overcurrent and short-circuit protection for overhead distribution lines and transformers. After fault interruption, the fuse tube drops visibly, helping maintenance teams identify the faulted section and carry out inspection or replacement more efficiently.
Key advantages include:
High-strength insulation support for reliable electrical and mechanical performance.
Suitable for outdoor installation under rain, UV exposure, pollution, and temperature variation.
Clear drop-out indication after fuse operation for easy inspection.
Compact structure and convenient pole-mounted installation.
Available with polymer housing or porcelain housing according to project requirements.
Suitable for transformer protection, line sectional protection, and branch line protection.
Core Features
Reliable High Voltage Protection
The HRW5-40.5kV drop-out fuse is suitable for outdoor high voltage distribution lines and provides fast protection against overload and short-circuit faults.Visible Isolation Point
After operation, the fuse tube drops down and forms a clear visual break, making fault identification and maintenance easier.Excellent Weather Resistance
The product is designed for long-term outdoor service and can withstand heat, cold, humidity, pollution, and UV exposure.Stable Insulation Performance
The insulation body can be made of polymer composite material or porcelain, meeting different project requirements for insulation strength and environmental adaptability.Flexible Installation
It can be used for distribution lines, pole-mounted transformers, substation feeders, branch lines, and outdoor distribution systems.Low Maintenance Cost
The simple structure, replaceable fuse element, and visible operation status help reduce routine maintenance costs.
Product Structure
The HRW5-40.5kV drop-out fuse generally consists of the following components:
Insulation Support: Provides main insulation support, available in polymer or porcelain type.
Upper Contact Assembly: Connects to the line side and ensures stable electrical contact.
Lower Contact Assembly: Supports the fuse tube and maintains current conduction.
Fuse Tube: Contains the fuse link and supports arc extinction during fault interruption.
Fuse Link: Selected according to rated current and protection requirements.
Mounting Bracket: Used for pole-mounted or structure-mounted installation, usually hot-dip galvanized.
Terminal Connectors: Used for connection with conductors, cables, or equipment terminals.
Arc-Extinguishing Structure: Helps elongate and extinguish the arc during fuse operation.
Technical Specifications
| Parameter | Application Range |
|---|---|
| Product Model | HRW5-40.5kV Drop-Out Fuse |
| Rated Voltage | 40.5kV |
| Applicable System | 35kV / 40.5kV high voltage distribution system |
| Product Type | Outdoor high voltage drop-out fuse |
| Installation Method | Pole-mounted, structure-mounted, outdoor distribution installation |
| Rated Frequency | 50Hz / 60Hz |
| Rated Current | Selected according to project requirements |
| Fuse Link Specification | Configured according to line protection and transformer capacity |
| Insulation Structure | Polymer housing or porcelain housing |
| Service Environment | Outdoor, overhead line, distribution area, substation |
| Main Function | Overload protection, short-circuit protection, isolation protection |
| Applicable Equipment | Distribution line, distribution transformer, cable branch, outdoor switchgear |
| Structural Feature | Drop-out fuse tube, visible disconnection, easy inspection |
| Anti-Corrosion Treatment | Hot-dip galvanized fittings and mounting brackets available |
| Maintenance Method | Fuse link replacement, regular inspection, contact checking |
Product Structure
Main Applications
The HRW5-40.5kV drop-out fuse is widely used in the following industries and applications:
High voltage distribution line protection
Overhead line branch protection
35kV / 40.5kV outdoor distribution systems
Primary-side protection of distribution transformers
Pole-mounted transformer stations
Substation feeder protection
Rural and urban distribution networks
Industrial and mining power distribution systems
Wind farm collection lines
Solar power plant step-up distribution lines
Cable branch and cable terminal protection
Protection for outdoor switchgear systems
Testing Capability
Wishpower carries out strict production inspection and performance testing for HRW5-40.5kV drop-out fuses to ensure stable operation in high voltage distribution networks.
Appearance and Structure Inspection: Checks product appearance, assembly quality, fittings, and surface treatment.
Power Frequency Withstand Voltage Test: Verifies insulation performance under specified high voltage test conditions.
Partial Discharge Test: Evaluates insulation stability under high voltage operation.
Mechanical Strength Test: Checks the reliability of insulation support, mounting brackets, and contact assemblies.
Contact Performance Test: Tests the stability and conductivity of upper and lower contacts.
Fuse Tube Operation Test: Verifies smooth, reliable, and visible drop-out action.
Thermal Stability Check: Evaluates temperature rise performance under continuous operating current.
Weather Resistance Evaluation: Tests resistance to pollution, UV exposure, humidity, and outdoor aging conditions.
Factory Inspection: Key inspection items are completed before delivery to ensure consistent 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: 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: 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 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.
