Wedge Clamp for Cable

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Wedge Clamp for Cable
Details
• The Wedge Clamp for Cable is specifically designed for low-voltage overhead lines and communication terminals, suitable for 6–70 mm² conductors, with a rated tensile strength of 2.5 KN and voltage rating ≤ 1 KV. It combines structural mechanics with high-strength materials to ensure long-term stability of the lines under various environmental conditions.
• The adaptive wedge locking system automatically tightens under tension, achieving the “the tighter the pull, the firmer the lock” effect. Tool-free installation, anti-slip and anti-loosening design enhances construction efficiency and safety.
• Weather-resistant, corrosion-proof, and lightweight, a single installation guarantees 25 years of stable operation, making it an ideal choice for efficient tensioning and long-term safety.
Category
Plastic Tension Clamp
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Description

Technical Specifications

 

Item

Specification

Model

DCR-2

Applicable Conductor

6–70 mm²

Material

PA66 Nylon + Stainless Steel Rope

Process

Injection Molding

Rated Load

2.5 KN

Voltage Rating

≤ 1 KV

Operating Temperature

–40 °C ~ +120 °C

Service Life

≥ 25 Years

 

Key Features

 

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  • Wedge Self-Locking Design: Automatically locks when the conductor is under tension, maintenance-free with zero slippage, requiring no additional inspections during long-term use.
  • Lightweight High-Strength Structure: Weight reduced by approximately 40% without compromising load capacity, making operations safer and reducing labor intensity for installers.
  • Exceptional Weather Resistance: Resistant to UV, acid rain, and salt spray, suitable for extreme climates, including high temperature, strong wind, coastal, and high humidity environments.
  • Reliable Insulation Protection: Prevents electric leakage and shock hazards, ensuring safe operation.
  • Wide Compatibility: Fits 6–70mm² conductors, covering most low-voltage projects and supporting various line configurations.

 

Structural Analysis

 

The dual-wedge track system automatically adjusts angles and clamping depth under load, ensuring even force distribution and minimizing local stress concentrations.
The stainless steel outer rope provides additional tensile support, absorbs vibration and wind loads, and prevents fatigue loosening while enhancing impact resistance.
Even under strong winds, heavy rain, or drastic temperature changes, the wedge clamp for cable maintains a secure locking state, providing full safety protection for the line.
The precise fit between the internal wedge and track ensures immediate response of clamping force under fluctuating tension, significantly reducing slippage risk and improving operational reliability.

 

Installation Convenience

 

  • Insert the conductor into the clamp slot;
  • Push in the wedge to automatically lock;
  • Tighten the tail ring and confirm stability.

 

No wrench or additional tools are required; a single person can complete the installation.
Field data shows construction time is reduced by 35%, and maintenance intervals are extended by over three times.
The optimized installation design suits various construction environments, including high tower work and confined spaces, while minimizing installer safety risks.

 

Application Scope

 

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  • Urban low-voltage distribution terminals and mid-span fixing
  • Rural power grid upgrades
  • Communication and outdoor lighting lines
  • Temporary power supply in industrial parks
  • Coastal, high-humidity, and salt-spray environments
  • Extreme temperature fluctuations and high wind or rainy conditions

 

This product adapts flexibly to different project scenarios, providing a unified high-performance tensioning solution, greatly enhancing construction efficiency and long-term line reliability.

 

Working Principle

 

The wedge structure utilizes the "reverse self-tightening" principle:
When the conductor is under tension, the wedge moves along the track, and the clamping force increases synchronously with the tension.
The greater the tension, the firmer the lock, effectively preventing slippage while improving vibration and impact resistance.
This design ensures that the wedge clamp for cable maintains stable tension over extended operation, reducing maintenance frequency and costs.

 

Performance

 

  • Ultimate tensile strength 2.8 KN, no slippage or structural damage
  • Continuous 500-hour salt spray test, no corrosion marks
  • UV aging for 1200 hours, strength retention ≥98%
  • –40°C to +120°C thermal cycles, 300 passes
  • Ensures stability under tropical, high-salt, or high-altitude cold environments

 

Multiple engineering validations confirm that this product ensures line safety and long-term reliability across diverse conditions.

 

Innovative Design

 

  • Dual-track wedge: even stress distribution, reduces local concentration and conductor wear
  • Integrated anti-seismic tail ring: enhances impact and wind resistance
  • Modular components: convenient for replacement and inspection, reducing maintenance costs
  • Arc-proof design: inner insulation layer effectively prevents tracking
  • Intelligent wedge angle adjustment: increases installation tolerance and adapts to various conductor shapes

 

These innovations ensure not only superior performance but also fast installation and long-term maintainability.

 

Quality Certification

 

  • ISO 9001 Quality Management System Certified
  • Complies with IEC 61284, EN 50483 international standards
  • Pre-shipment tests for tensile strength, impact, salt spray, and aging
  • Pass rate ≥ 99.8%
  • Every clamp is traceable, and each locking can be verified

 

Strict quality management ensures the stability and safety of each clamp during use.

 

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Engineering Cases

 

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  • Southeast Asia power grid upgrade: four years in high humidity with zero loosening or cracking
  • South America lighting project: 40% improvement in construction efficiency, 70% reduction in maintenance
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  • African coastal microgrid: three years in salt spray environment with intact structure and no strength reduction

These cases demonstrate the reliability and long-term stability of the product in diverse environments, providing practical application references for engineering clients.

 

Customization & Compatibility

 

  • Supports OEM / ODM customization
  • Adjustable tail ring size and angle to fit various tower structures
  • Compatible with insulated piercing clamps and terminal connectors
  • Offers personalized labels and color options

 

Customized services meet different project requirements, ensuring line safety and construction efficiency.

 

Packaging & Logistics

 

  • Moisture-proof inner bag + crush-resistant outer box + pallet fixation
  • Standard lead time: 7 days; Custom: 10–15 days
  • Supports sea, air, and multiple shipping channels
  • Provides export-standard documents (CO, inspection report, invoice, etc.)

 

Professional packaging ensures safe transportation, prevents product damage, and improves delivery efficiency.

 

Safety Standards

 

  • Insulation resistance > 10⁸ Ω
  • Arc resistance meets IEC standards
  • Flame retardant: glow wire test > 850°C
  • Complies with low-voltage line safety operations (≤1 KV)

 

Meets industry safety regulations, ensuring personnel and equipment safety during installation and operation.

 

Contact & Support

 

Request samples / technical documents / engineering quotations: linda@jkte888.com
Click "Request Quote" for one-on-one technical consultation. Our professional team will provide detailed installation guidance, optimized engineering solutions, and personalized technical support.

 

FAQ

 

Q1: How to determine the failure mode of the clamp during operation?

A1: Common failures include wedge slippage, material creep, or steel rope fatigue. Replacement is required if displacement exceeds 1.5 mm or wedge deflection exceeds 2°.

Q2: How to select the appropriate specification based on conductor size and tensile requirement?

A2: Refer to conductor area, operational tension, and safety factor (~3.0). Recommended clamp load: 30–50% of conductor's ultimate tension.

Q3: Can it be used with insulated piercing clamps or terminal connectors?

A3: Yes. Maintain at least 150 mm spacing from piercing points to avoid stress interference; insulated tail rings are recommended.

Q4: How is molecular stability of the material ensured under UV aging and humid heat conditions?

A4: UV-stabilized nylon maintains ≥96% tensile strength after 1000 hours at 70°C/95% RH, ensuring long-term reliability.

Q5: What is the clamping force retention under extreme temperatures (–40°C to +120°C)?

A5: After 300 thermal cycles, clamping force retention is 98.5%, ensuring reliable operation in extreme conditions.

 

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