Description

Drop Out Fuse - Medium Voltage Overcurrent Protection

The Drop Out Fuse is a crucial component for reliable overcurrent protection in outdoor medium voltage distribution systems. Engineered for durability and high performance, it provides both essential fault protection and a clear, visible indication of operation, ensuring rapid fault isolation and enhanced system reliability for utilities and industrial applications.

Product Overview

Our Drop Out Fuses are designed to protect transformers, capacitor banks, overhead lines, and other medium voltage equipment from damage caused by overloads and short circuits. The innovative "drop out" action immediately signals a blown fuse, facilitating quick identification and restoration of service, thereby minimizing downtime and operational costs.

Key Features

• Visible Operation Indication: The unique "drop Out" mechanism provides a clear visual signal when the fuse link has operated, allowing for immediate fault identification from a distance.
• Robust & Weather-Resistant Construction:
  • Insulators: Available with high-grade porcelain (brown or grey glaze) or UV-stabilized, hydrophobic silicone polymer insulators for superior insulation and resistance to environmental contaminants, arcing, and tracking.
  • Fuse Holder/Tube: Constructed from durable, weather-resistant fiberglass or epoxy composite materials, designed to withstand harsh outdoor conditions.
  • Contacts & Fittings: Manufactured from corrosion-resistant tin-plated copper alloys or stainless steel to ensure reliable conductivity and long service life.
• High Interrupting Capacity: Capable of effectively clearing high fault currents, protecting downstream equipment from severe damage.
• Wide Voltage & Current Ratings: Available for various medium voltage levels (e.g., 11kV, 22kV, 33kV, 36kV) and current ratings to suit diverse application requirements.
• Easy & Safe Operation: Designed for straightforward re-fusing and operation using standard hot stick tools, enhancing personnel safety and reducing maintenance time.
• Universal Fuse Link Compatibility: Utilizes standard industry-compatible fuse links, offering flexibility and ease of replacement.
• Versatile Mounting Options: Available with various mounting brackets (e.g., cross-arm, pole-top) for flexible installation on utility poles or substation structures.
• Optional Load Break Hook: Some models can be equipped with a load break hook for manual load interruption (when used with an appropriate load break tool), adding operational flexibility.

Benefits

• Enhanced System Safety: Provides critical overcurrent protection, preventing equipment damage and reducing potential hazards.
• Improved Reliability & Uptime: Rapid fault identification and isolation minimize outage durations, contributing to higher system reliability.
• Reduced Maintenance Costs: Durable construction and easy re-fusing procedures lead to lower maintenance requirements and operational expenses.
• Long Service Life: High-quality materials and robust design ensure exceptional longevity in demanding outdoor environments.
• Operational Efficiency: Visual indication speeds up troubleshooting, enabling utility crews to quickly locate and address faults.
• Compliance & Peace of Mind: Manufactured to meet stringent international and local industry standards, ensuring quality, safety, and performance.

Applications

• Transformer Protection: Safeguarding distribution transformers from overloads and short circuits.
• Overhead Line Protection: Sectionalizing and protecting medium voltage distribution lines.
• Capacitor Bank Protection: Protecting power factor correction capacitor banks.
• Sectionalizing Points: Used at branch points or tap-offs in distribution networks.
• Industrial Facilities: Providing localized overcurrent protection for medium voltage equipment in industrial plants.
• Substations: As part of protection schemes within medium voltage substations.

Technical Specifications (Illustrative - Specifics Vary by Model)

• Rated Voltage (kV): 11 kV, 22 kV, 33 kV, 36 kV (Custom options available)
• Rated Continuous Current (Fuse Barrel): Up to 100 A, 200 A, 300 A
• Interrupting Current Capacity: Up to 10 kA, 12.5 kA, 16 kA (Asymmetrical RMS)
• Impulse Withstand Voltage (BIL): 95 kV, 125 kV, 150 kV, 170 kV, 200 kV
• Power Frequency Withstand Voltage (Wet/Dry): Varies by kV rating
• Insulator Material: High-grade Porcelain (C130) or Silicone Polymer
• Fuse Holder Material: Fiberglass/Epoxy Composite Tube
• Contact Material: Tin-plated Copper Alloys
• Mounting: Cross-arm (Single or Double), Pole-top (Tangent or Angle)
• Operating Temperature Range: -40°C to +55°C
• Standards: IEC 60282-2, ANSI C37.41, IEEE C37.42 (or relevant national standards)

Installation & Maintenance

Our Drop Out Fuses are designed for straightforward installation by qualified personnel. They require minimal maintenance beyond periodic visual inspection to ensure cleanliness and proper function. Re-fusing is a simple and safe procedure, performed with standard hot stick tools and appropriate safety protocols.

Why Choose Our Drop Out Fuse?

We are committed to delivering high-quality, reliable, and safe medium voltage protection solutions. Our Drop Out Fuses combine advanced engineering with robust materials to offer unparalleled performance and longevity in the most demanding environments. With comprehensive technical support and a focus on customer satisfaction, we are your trusted partner for distribution system protection.

Contact Us Today

For detailed specifications, customization options, or to request a quote, please contact our sales team. Our experts are ready to assist you in selecting the ideal Drop Out Fuse solution for your specific application requirements.