Aluminum Alloy NLL Series Bolt Type Tension Clamp
Tension clamp is mainly used for overhead power line or substation fixed wire and lightning rod, and through the connection of gold and tensioning insulator string connection, mother of mother function, also used to fix the cable tower cable.
Description
Baoding Sihedan Electric Technology Co., Ltd. is one of the most reliable manufacturers and suppliers of Aluminum Alloy NLL Series Bolt Type Tension Clamp in China. With abundant experience, we warmly welcome you to buy cheap Aluminum Alloy NLL Series Bolt Type Tension Clamp from our factory. Quality products and low price are available.
Products Description
Tension Clamp NLL Introduction
NLL series aluminum alloy strain clamps are engineered for aerial power lines up to 20kV, designed to secure aluminum conductors or steel-core aluminum wires (ACSR) onto strain poles when used together with aerial insulation conductors and insulation covers for enhanced insulation protection. Constructed for high-tensile mechanical securing, these non-conducting bolt-type strain clamps are built to withstand full wire or lightning rod (cable) tension, ensuring a grip strength of no less than 90% of the installed conductor's rated tensile capacity.
This product is highly suitable for distribution line tensioning applications requiring high mechanical grip force and reliable energy-saving material performance. Featuring a lightweight aluminum alloy body and pressing block for optimized energy efficiency, a durable stainless steel closing pin, and hot-dip galvanized steel components for the remaining fittings, these strain clamps provide a robust, long-lasting solution designed to maintain full line tension without serving as electrical conductors.
FEATURES
■High-strength and durable aluminum alloy body ensuring long-term mechanical reliability
■Excellent electrical conductivity designed for stable performance on aerial distribution lines up to 20kV
■Reliable quality clamp structure providing strong grip force without less than 90% rated conductor tension
■Easy installation design with hot-dip galvanized and stainless steel hardware for quick site assembly
Parameters
|
Applicable wire diameter includes wrapping(mm) |
Dimension(mm) |
U-BOLT |
Failure load (KN) |
Weight (kg) |
|||||
|
L1 |
L2 |
C |
M |
number |
Dia |
||||
|
NLL-1 |
∅5.0-15.5 |
140 |
130 |
19 |
16 |
2 |
12 |
40 |
0.85 |
|
NLL-2 |
∅8.2-17.0 |
212 |
180 |
22 |
16 |
3 |
12 |
70 |
1.5 |
|
NLL-3 |
∅11.4-20.0 |
295 |
250 |
24 |
16 |
4 |
14 |
70 |
2.74 |
|
NLL-4 |
∅13.6-25.0 |
324 |
255 |
30 |
18 |
4 |
16 |
100 |
3.96 |
|
NLL-5 |
∅16.0-32.0 |
400 |
320 |
36 |
22 |
5 |
16 |
120 |
5.65 |
|
NLL-6 |
∅28.5-46.5 |
480 |
380 |
50 |
24 |
6 |
16 |
120 |
9.0 |
Other specifications can be asked by email
DIMENSION
Products Overview
Characteristics
Featuring a high-tensile structural grip design for aerial power lines up to 20kV, these NLL series aluminum alloy strain clamps boast specialized mechanical securing, where non-conducting bolt assemblies are engineered to withstand full conductor tension while maintaining a grip strength of no less than 90% of the installed rating. Constructed for distribution line tensioning, the clamps incorporate an energy-saving aluminum alloy body and pressing block, alongside stainless steel closing pins and hot-dip galvanized steel fittings-ensuring precise physical fit and reliable insulation protection when used with aerial insulation conductors and covers.
This product is highly suitable for overhead line support applications requiring high mechanical tension resistance and durable electrical conductivity. Where exact line stability and reliable quality are required, its engineered aluminum alloy construction provides a far more efficient solution than standard non-insulated fittings-combining strong grip force, robust corrosion resistance, and easy installation to ensure precise long-term line safety without serving as electrical conductors.
About Us
Baoding Sihedan Electric Technology Co., Ltd.
Founded by two industry experts with over 20 years of experience, Sihedan Electric Technology Co., Ltd. was established to advance power system development and transmission & distribution line solutions. Soon after, we launched our comprehensive portfolio-spanning high-voltage switchgear, advanced insulation systems, line fittings, and grid protection-establishing a recognized benchmark for reliability across the global energy sector. Having executed projects in over 50 countries, we have built strong, stable partnerships with clients around the globe, including in Kenya, Morocco, Egypt, and beyond.
Frequently Asked Questions
Q: What is the MOQ?
A: There are no MOQ limit in first order, and 100pcs in further.
Q: Samples providing?
A: We are providing the samples by free, but need pay for the freight charge.
Q: EPC material design and provide in lot?
A: Yes, we are supplying for LV and MV EPC material in lot many years.and have strong design team.
Q: Complete documents for tender?
A: Yes, whole set documents ready for submit.
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