CW-DLPC: Down Lead Clamp (Optical Cable Fixing Clamp)

1. Product Overview

The CW-DLPC Down Lead Clamp, also known as a Down Lead Cushion or Guide Clip, is a critical component used in overhead transmission and telecommunication lines. Its primary function is to guide the optical fiber cable (ADSS/OPGW) vertically down from connecting towers, terminal towers, or intermediate poles, while securely fixing the cable’s bend (arch section) to prevent excessive movement.

This clamp ensures mechanical protection against wind-induced vibration, abrasion, and physical stress, thereby extending the service life of the fiber optic cable.

2. Structure & Types

Depending on the installation environment (poles vs. towers), the down lead clamp is designed in two main configurations:

2.1 Pole Down Lead Clamp (Model: CW-DLPC)

• Components:​ Stainless Steel Banding Strap, Rubber Insert, Aluminum Alloy Base.

• Mechanism:​ The stainless steel strap wraps around the pole, and the aluminum base tightens to secure the rubber insert. The cable is held within the rubber groove, which provides cushioning and friction reduction.

• Application:​ Wooden poles, concrete poles, and galvanized steel pipes.

2.2 Tower Down Lead Clamp (Structure Note)

• Components:​ Galvanized Steel Bracket, Mating Bolts & Nuts, Rubber Liner.

• Mechanism:​ Unlike pole clamps, tower clamps use a rigid metal bracket fixed directly to the steel tower via bolts.

• Application:​ Angular steel towers and lattice structures.

2.3 Material Advantages

• Composite Design:​ Combines the corrosion resistance of stainless steel/aluminum with the shock absorption of rubber.

• Surface Treatment:​ All metallic parts undergo anti-corrosive treatment (Stainless Steel or Hot-Dip Galvanization) to withstand harsh outdoor environments.
  

3. Technical Specifications

4. Installation Instructions

To ensure optimal performance and avoid cable stress, please follow these steps carefully:

1. Positioning:​ Confirm the mounting location on the pole. Verify compatibility between the cable diameter and the clamp size.

2. Adjust Pad:​ Rotate the aluminum pad to align with the desired direction of the down lead.

3. Wrap Strap:​ Encircle the stainless steel banding strap around the pole and thread the end through the aluminum pad.

4. Tensioning:​ Pull the strap tight. Fold the excess tail back along the inner side of the clamp body.

5. Secure Base:​ Tighten the bolts and nuts to lock the clamp onto the pole firmly.

6. Insert Cable:​ Open the rubber fastening cover and place the optical cable into the designated groove.

7. Final Lock:​ Close the rubber cover and tighten the hardware until the cable is snug and secure.

5. Application Guidelines & Best Practices

• Compatibility:​ Suitable for both ADSS (All-Dielectric Self-Supporting) and OPGW (Optical Ground Wire) cables.

• Mounting Spacing:

  • Vertical Sections:​ Install one set of down lead clamps every 1.5 – 2.0 meters​ to stabilize the cable run.

  • Bend/Arc Sections:​ Use two sets per tower or pole to securely anchor the cable bend.

• Direction:​ Always install the clamp to guide the cable smoothly from top to bottom without sharp kinks.

6. Manufacturer Profile

Hbcrownwealth​ is an ISO-certified manufacturer and exporter specializing in high-quality cable fittings and accessories for power transmission and communication networks.

• Quality Assurance:​ Our down lead clamps feature quick installation, smooth surfaces, robust durability, and competitive pricing.

• Customization:​ We offer a wide range of cable clamps with various connection options and material grades to meet specific project requirements.

Note:​ For detailed drawings, alternative specifications, or bulk inquiries, please contact our technical team.