Wedge Strain Clamp for Insulated Cables – NXJ Series

Wedge Strain Clamp for Insulated Cables – NXJ Series

Key Features

  • Wedge Mechanism – Ensures secure grip without cable damage

  • Multi-Voltage Support – Rated for 1kV to 20kV applications

  • Durable Materials – Aluminum alloy & UV-resistant fiberglass construction

  • Wide Temperature Range – Operates from -40°C to +60°C

  • Easy Installation – Simple positioning and tightening process

  • Corrosion Resistant – Suitable for humid and harsh environments

  • ADSS Compatible – Ideal for optical and insulated aluminum cables

  • High Grip Strength – Rated from 3.4 kN to 28.2 kN

  • Industry Compliant – Meets overhead line safety standards

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Wedge Strain Clamp for Insulated Cables is engineered for secure termination and anchoring of 10kV and below overhead insulated aluminum core cables (JKLYJ) or ADSS optical cables. Designed with a robust wedge mechanism, these clamps ensure reliable tensioning without damaging cable insulation. Ideal for corner, splice, and terminal connections in power distribution and telecommunication networks, the NXJ series guarantees long-term performance under diverse environmental conditions. The wedge strain clamp is specifically designed for securing insulated cables, particularly those used in low-voltage power distribution systems.

Material Composition

  • Body: Aluminum alloy

  • Insulating Components: UV-resistant fiberglass-reinforced plastic

  • Wedge: Precision-engineered for secure cable gripping

Installation Process

  1. Preparation: Verify clamp compatibility with cable specifications.

  2. Positioning: Place the clamp around the insulated cable at the desired location.

  3. Tightening: Secure the wedge mechanism to achieve a firm grip without damaging insulation.

  4. Inspection: Ensure proper tensioning and cable support.

Standards Compliance

  • Designed to meet industry safety and performance standards

  • Suitable for overhead insulated cable systems

NXJ
Wedge Strain Clamp for Insulated Cables – NXJ Series

Technical Specifications

TYPE

Insulated Al cable size(mm²)

core size

grip strength (kN)

breaking load (kN)

 

1kV

10kV

20kV

 

 

 

NXJ1

16-35

 

 

7.1-10

1.6

13.7

NXJ2

50-70

16-25

 

11.7-13.7

2.4

13.7

NXJ3

95

35-50

 

14.8-16.1

4.55

13.7

NXJ4

50-70

10-16

 

11.2-12.8

 

21

NXJ5

70-95

16-35

 

12.6-15.8

 

21

NXJ6

95-120

35-50

 

14.8-16.7

 

21

NXJ7

120-150

70-95

25-35

17.8-19.4

8.9

21

NXJ8

185

120-150

50-70

20.8-22.4

13.65

21

NXJ9

185

120-150

50-70

20.8-22.4

13.65

43.3

NXJ10

240

185-240

95-120

24-26.2

22.5

 

NXJ11

 

300

120-150

28.4

28.2

46.5
NEJ Wedge strain
NXJ Wedge strain
 

Applications

  • Overhead Power Lines – Anchors and tensions cables in distribution systems

  • Street Lighting – Secures cables for public illumination networks

  • Telecommunications – Supports data and signal transmission lines

  • Renewable Energy – Manages cables in solar and wind power installations

  • Industrial Facilities – Organizes power and control cables safely

  • Substation Installations – Anchors connections between transformers and equipment

Product Advantages

  1. Secure Wedge Grip: The wedge mechanism ensures a firm grip on the cable, preventing slippage under load.

  2. Insulation Protection: The clamps are generally easy to install, often requiring only basic tools and following straightforward procedures.

  3. Weather-Resistant Build: Made from high-quality materials like aluminum alloy and UV-resistant fiberglass, these clamps are built to last in various weather conditions.

  4. Quick Installation: Simple setup with basic tools

  5. Even Load Distribution: The clamp’s design helps distribute the load evenly across the cable, reducing stress points for enhanced safety.

 

FAQs – Wedge Strain Clamp for Insulated Cables (NEJ Series)

Q1: What types of cables are compatible with the NEJ Series wedge strain clamps?
NEJ Series clamps are designed for overhead insulated aluminum core cables (JKLYJ) up to 10 kV and ADSS optical cables. They are suitable for both power distribution and telecommunication applications.

Q2: What voltage levels can the NEJ Series support?
The clamps are rated for 1 kV to 20 kV applications, making them suitable for low- and medium-voltage overhead insulated cable systems.

Q3: Will the wedge mechanism damage the cable insulation?
No. The precision-engineered wedge and fiberglass-reinforced insulating components ensure firm gripping without cutting, crushing, or damaging the cable insulation.

Q4: What installation points are suitable for NEJ Series clamps?
They are commonly used at terminal poles, corner poles, angle points, splice locations, and dead-end positions in overhead line networks.

Q5: Are these clamps suitable for harsh environmental conditions?
Yes. NEJ Series clamps operate reliably in temperatures from –40°C to +60°C and feature corrosion-resistant aluminum alloy and UV-resistant fiberglass components, making them suitable for humid, coastal, and industrial environments.

Q6: What is the grip strength or mechanical load capacity of the NEJ Series?
Depending on the model, the rated grip strength ranges from 3.4 kN to 28.2 kN, ensuring secure and stable cable anchoring.

Q7: Can NEJ Series clamps be used for ADSS fiber optic cables?
Yes. The clamp design is ADSS-compatible and provides secure anchoring without compromising the integrity of optical fibers.

Q8: Are special tools required for installation?
No special tools are required. Installation involves simple positioning and tightening using standard hand tools.

Q9: Do NEJ Series clamps comply with industry standards?
Yes. The clamps are designed in accordance with overhead line safety and performance standards for insulated cable systems.

Q10: Does Telexc provide customized NEJ Series wedge strain clamps?
Yes. Telexc offers OEM and ODM customization, including size, mechanical rating, material selection, and branding to meet specific project or utility requirements.

Our Services

  1. Rich experience in ODM & OEM production
  2. Excellent one-stop solution for telecom and power hardware
  3. High-quality precision casting and forging capabilities
  4. Factory-direct pricing with fast delivery
  5. Strict quality control and inspection at every stage
  6. Warm welcome to visit our factory for cooperation opportunities

About Us

Telexc is a high-tech enterprise specializing in the manufacturing of hardware equipment for the telecommunications and electric power sectors. With production and sales centers in Tianjin and Hebei, China, our products are successfully operating in over 30 countries and have been trusted in power systems for more than 20 years. We are an approved and certified supplier to major telecom companies worldwide and have earned excellent references from numerous utility departments. Our facilities are equipped with modern machinery, advanced testing equipment, and a skilled engineering team.
TTF TELE is certified under:

  • ISO 9001(Quality Management)
  • ISO 14001(Environmental Management)
  • ISO 45001(Occupational Health & Safety)

With innovation, reliability, and customer satisfaction at our core, Telexc continues to lead the way in transmission and telecommunication line hardware manufacturing.

Why Choose Telexc

  • Precision Engineering
    Designed to meet modern telecom and power utility requirements with consistent quality and performance.

  • International Standard Compliance
    Fully compliant with IEC 61284 and ANSI C119.4, ensuring global project acceptance.

  • Proven Field Reliability
    Trusted by telecom operators, ISPs, and utility companies for aerial drop and service connections.

  • Comprehensive Product Range
    Available in wire-wrap and compression types to suit different installation practices.

  • Quality Materials & Manufacturing
    Use of premium stainless steel and advanced materials ensures durability and long service life.

  • OEM & Project Support
    Telexc supports customization based on cable type, installation environment, and project requirements.

 

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