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FDGW-35/200A 40.5KV Windproof Drop-Out Fuse

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This type of Windproof Drop-Out Fuse, through its innovative design and rigorous manufacturing, brings multiple core advantages to your high-voltage distribution lines:

  • 1. Unique Windproof Structure, Eliminating Nuisance Tripping:
    • Technical Detail: Features a specially designed locking mechanism or damping device that effectively resists swaying and vibration caused by wind when the fuse is in the closed position, preventing accidental dropping of the fuse during non-fault conditions. Simultaneously, the aerodynamic design of the fuse tube and contact parts has been optimized to reduce wind resistance.
    • Key Benefit: Completely solves the problem of nuisance tripping in traditional drop-out fuses during strong winds, significantly improving the reliability of line operation and continuity of power supply, reducing unnecessary power outage losses and operation & maintenance costs.
  • 2. Excellent Breaking Capacity & Efficient Arc Extinction:
    • Technical Detail: Utilizes high-quality fuse links, coupled with high-performance arc-extinguishing materials and an optimized arc chamber structure, ensuring that in the event of a short-circuit fault, the fuse can quickly and reliably interrupt the fault current and extinguish the arc in a very short time.
    • Key Benefit: Effectively limits the damage caused by short-circuit faults to grid equipment, ensuring rapid restoration of subsequent equipment operation. High breaking capacity guarantees safe isolation during grid faults.
  • 3. Superior Weather & Corrosion Resistance:
    • Technical Detail: Metal components undergo hot-dip galvanization or are made of stainless steel, offering excellent anti-corrosion capabilities. Insulators use high-strength ceramic or silicone rubber composite materials, with surfaces specially treated for hydrophobicity, providing UV resistance and anti-aging properties, effectively resisting erosion from salt spray, acid rain, sand, and other harsh environmental factors.
    • Key Benefit: Ensures the fuse remains undeformed, rust-free, and unaged during long-term outdoor operation, significantly extending product lifespan and reducing replacement and maintenance frequency.
  • 4. Convenient Operation, Efficient Maintenance:
    • Technical Detail: Features a load-break diverging contact structure, making load-breaking operations safer and more reliable. Fuse replacement is simple and quick, supporting live-line operation (requires an insulated hot stick), greatly reducing power outage time.
    • Key Benefit: Improves operation and maintenance efficiency, reduces the difficulty and risk of high-voltage line maintenance, saving significant labor and resources.
  • 5. High Strength & Structural Stability:
    • Advantage: The overall structural design is robust with high mechanical strength, capable of withstanding external impacts from wind loads, ice accumulation, and earthquakes. Easy to install and well-compatible with existing distribution line pole and tower structures.
    • Key Benefit: Guarantees the structural integrity and operational stability of the fuse under various extreme natural conditions, enhancing the disaster resistance of distribution lines.

FDGW-35:200A 40.5KV Windproof Drop-Out Fuse

Environmental Conditions

No.ItemValue
1Extreme Max. Air Temperature (°C)40
2Extreme Min. Air Temperature (°C)-30 (Lower temperatures customizable)
3Altitude (m)<1000 (Customization needed for higher altitudes)
4Seismic Intensity (China 12-grade standard)8
5Basic Seismic Acceleration Value0.2
6Wind Speed≥ 34m/s (Beaufort Scale 12)
7Pollution LevelClass IV and above (based on creepage distance)

Technical parameters:

ParameterValue/Description
General Parameters
Rated Voltage35kV (Applicable for 35kV systems; actual models may cover 10kV, 27kV, 35kV)
Rated Frequency50Hz
Current Parameters
Rated Current100A, 200A (Other current ratings available)
Rated Short-Time Withstand Current (Ith)12.5kA/4s, 20kA/4s (depends on model and breaking capacity)
Rated Dynamic Current (Ip)31.5kA, 50kA (depends on model and breaking capacity)
Breaking Performance
Rated Breaking Current10kA, 12.5kA (depends on model)
Mechanical Performance
Mechanical Endurance≥ 2000 operations
Insulation Performance
50Hz Power Freq. Withstand Voltage (Dry)≥ 95kV
50Hz Power Freq. Withstand Voltage (Wet)≥ 75kV
Lightning Impulse Withstand Voltage (Peak)≥ 185kV
Materials & Structure
Insulator TypePorcelain insulator or composite insulator
Fuse TubeFiberglass epoxy resin tube or alkali-free glass fiber tube
Contacts & FittingsCopper with silver plating or stainless steel, hot-dip galvanized surface

Applications:

  • Substation Outgoing Lines: As overcurrent and short-circuit protection for main transformers or distribution lines.
  • High-Voltage Side of Distribution Transformers: To protect distribution transformers and prevent fault escalation.
  • Branch Line Protection: For selective protection of overhead branch lines, isolating fault points.
  • Rural Grids & Remote Areas: Simple structure and easy maintenance, especially suitable for areas with limited maintenance conditions.
  • Windy, Salt-Fog, and Polluted Areas: Unique windproof and weather-resistant design ensures reliable operation in harsh environments.
  • Urban Grid Renovation: Fast response, improving the automation level of the distribution network.

 

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