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NLL Bolt-type Tension Clamp 3U
- Product Description
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Product Introduction
The NLL bolt-type tension clamp is a core hardware for overhead power lines. It is a bolt-fastened aluminum alloy tension clamp. The core is used to fix overhead conductors/ground wires to tension poles, terminal poles or corner poles, bear the tension of the conductors and transfer it to the poles and towers. It is suitable for 10kV and below distribution lines. In scenarios with insulated conductors, it needs to be used with an insulating cover.
Product Model Applicable Cable Dia. Main Dimensions(mm) Number of U-Bolt Breaking load Reference weight (mm) L L1 C M (KN) (KG) NLL-3A 14.0 ～ 18.0 150±3 235±5 25±1 16 3*M14 70 1.714 NLL-4A 18.0 ～ 23.0 155±4 255±5 26±1 18 3*M14 90 2.237 Product Model Applicable Cable Dia. Main Dimensions(mm) Number of U-Bolt Breaking load Reference weight (mm) L L1 C M (KN) (KG) NLL-3 14.0 ～ 23.0 170±3.5 252±5 25±1 16 3*M14 70 1.83 NLL-4 18.0 ～ 30.0 230±5 265±5.5 32±1 18 3*M14 90 2.42 NLL-3S 14.0 ～ 23.0 160±3 195±4 25±1 16 3*M12 70 1.331 Product Model Applicable Cable Dia. Main Dimensions(mm) Number of U-Bolt Breaking load Reference weight (mm) L L1 C M (KN) (KG) NLL-3(120-150) 14.0～18.0 140±3 165±3.5 25±1 16 3*M12 70 0.87 NLL-4(320)-3U 12.7 ～ 26.5 205±4 265±5.5 28±1 16 3*M14 70 1.714 Structure and Material
Main structure
Clamp body + pressure plate: High-strength aluminum alloy after heat treatment, featuring high strength, light weight and corrosion resistance.
Fasteners: U-bolts (hot-dip galvanized steel for anti-corrosion), closed pins (stainless steel).
Insulating accessories: Insulating shield (compatible with insulating wires), strong weather resistance, and serves an insulating protective function.
Material combination
Core components (clamping body/pressure plate) : High-strength aluminum alloy, no hysteresis loss, energy-saving and consumption-reducing.
Metal accessories: Hot-dip galvanized steel (anti-corrosion), stainless steel (closed pins, anti-rust and anti-sticking).
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Address：Handan city, Hebei province, China
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