1. Transmission Line Hardware Fittings
✅ Function:
Support and connect conductors,
insulators, and towers in overhead transmission lines.
🧩 Key Features:
Withstand mechanical stress from tension, wind, and conductor weight
Often installed on towers/poles along long distances
Includes protective devices to reduce vibration and corona discharge
🔧 Examples:
Suspension clamps, strain clamps
Vibration dampers, spacer dampers
Corona rings, armor rods
Yoke plates, U-bolts, shackles
📍 Location:
Along overhead transmission lines between substations or power plants
2. Insulator Fittings (A Subcategory of Both Line and Substation Hardware)
✅ Function:
Connect insulators to conductors, towers, or substation equipment, while maintaining mechanical support and electrical insulation.
🧩 Key Features:
Must work with porcelain, glass, or polymer insulators
Must prevent flashover and ensure safe mechanical loading
Used in both overhead lines and substations
🔧 Examples:
Ball and socket fittings
Clevis, eye,
tongue ends
Cap and pin connectors
Yoke plates (in insulator strings)
📍 Location:
On insulator strings in transmission lines and substations
Where insulators are mounted between live and grounded components
3. Substation Fittings
✅ Function:
Support, connect, and protect busbars, insulators, disconnectors, circuit breakers, transformers, and other equipment in substations.
🧩 Key Features:
-
Designed for stationary setups with high voltage equipment
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Focus on precise alignment, compact design, and high durability
-
Usually heavier-duty than line fittings
🔧 Examples:
📍 Location:
Inside electrical substations, including:
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Transmission substations
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Distribution substations
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Switching stations
📞 +86 15274981317
📧 info@nooaelectric.com
🤝 Nooa Electric - China Leading Glass Insulator and Fitting Manufacturer