Technical Specifications
|
Model |
Applicable wire diameter range (including wrapping material)(mm) |
Main dimension (mm) |
U type bolt |
Nominal breaking load(kN) |
Reference weight(kg) |
|||||
|
M |
C |
L1 |
L2 |
R |
Quantity (个) |
Diameter(mm) |
||||
|
NLD-1 |
Φ5.0 ~ 10.0 |
16 |
18 |
150 |
120 |
6.5 |
2 |
12 |
20 |
1.3 |
|
NLD-2 |
Φ10.1 ~ 14.0 |
16 |
18 |
205 |
130 |
8 |
3 |
12 |
40 |
2.1 |
|
NLD-3 |
Φ14.1 ~ 18.0 |
18 |
22 |
310 |
160 |
11 |
4 |
16 |
70 |
4.6 |
|
NLD-4 |
Φ18.1 ~ 23.0 |
18 |
25 |
410 |
220 |
12.5 |
4or5 |
16 |
90/100 |
7.0/7.1 |
Product Introduction
● NLD Bolt-Type Tension Clamp is a commonly used hardware accessory in power lines, mainly used to fix conductors or overhead ground wires on tension insulator strings, serving as an anchor. It can also be used to fix guy wires of guyed towers.
● It is suitable for fixing small and medium cross-section conductors on tension towers in overhead power transmission lines and substations.
Product Features
Malleable cast iron material with excellent vibration damping performance;
Multiple U-bolts provide large locking force on conductors;
Large arc radius design ensures smooth conductor bending;
Flared inlet and outlet design minimizes conductor damage
Installation Steps
Step 1: Conductor Preparation - Clean conductor surface, remove oxide layer and dirt - Wrap aluminum binding tape (1mm×10mm) at conductor installation position, wrapping direction consistent with outer layer stranding direction of conductor
Step 2: Clamp Installation - Place conductor into clamp groove, ensure conductor is centered in groove - Install pressure plate, ensure wavy groove of pressure plate fits tightly with conductor
Step 3: Bolt Tightening - Tighten U-bolts gradually in diagonal sequence - Use torque wrench to tighten evenly, ensure balanced force on all bolts - Recommended torque values: M12 bolts approximately 40-50N·m, M16 bolts approximately 80-100N·m
Step 4: Inspection and Acceptance - Check whether conductor and clamp are in tight contact without looseness - Confirm clamp grip force meets requirements (not less than 90% of conductor rated tensile strength) - Install cotter pins to prevent bolt loosening
After-Sales Service
● Quality Assurance: Products are strictly designed, manufactured and inspected according to national standards GB/T 2314, GB 2320, etc., with quality certificates provided
● Customization Service: Non-standard product customization services available according to customer special requirements
● Technical Support: Provide 24-hour technical consultation services, assist in solving technical problems in selection, installation and use
● Email: boogie@jkte888.com
● Business Contact: +86 189-2579-5886 (Same number for WhatsApp)
● Official Website: jkte888.com (View product details)
Application Scope
Transmission Lines Widely used on tension towers of 10kV and below overhead transmission lines
Distribution Lines Fixed connection of overhead lines in urban and rural distribution networks
Substations Conductor fixing at substation incoming and outgoing line structures
Angle Towers Conductor anchoring at line corners
Terminal Towers Conductor fixing at line terminals
Guy Wire System Guy wire fixing of guyed towers
Special Environments Suitable for mountainous areas, wilderness and other environments with inconvenient transportation and construction.
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85% +Retaining Customers
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50 +Serving the Nation
FAQ
Q: What type of hardware is the NLD bolt-type tension clamp, and what is its primary function?
A: It is a load-bearing bolt-type splicing hardware conforming to national standards. It is primarily used for the terminal fixation, angle connections, and branch anchoring of aluminum stranded wire and steel-core aluminum stranded wire in overhead lines. It bears the full tension of the conductor and can be installed without cutting the conductor.
Q: What are the common causes of overheating in NLD Bolt-Type Tension Clamps during operation?
A: The main causes include mismatched clamp models and conductors, insufficient bolt torque, incomplete removal of conductor oxidation, lack of conductive grease, and loose fasteners.
Q: What are the requirements for the breaking load of NLDBolt-Type Tension Clamps?
A: Different models correspond to different load capacities. Standard NLD-1 to NLD-5 models have breaking loads of ≥70 kN to 120 kN, and can be customized to specifications such as 70 kN, 100 kN, or 120 kN based on requirements.
Q: What is the operating temperature range for NLD Bolt-Type Tension Clamps?
A: -40°C to +90°C. They are suitable for outdoor use in extremely cold and hot regions without performance degradation such as freezing, cracking, or softening.
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