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An anchoring clamp, also known as a wedge-type tension clamp or dead-end clamp, is a device used to secure and anchor cables in overhead installations. The structure typically consists of a body made from UV-resistant plastic or aluminum alloy, wedge blocks made of durable nylon or polymer, and a fixing ring made of hot-dip galvanized steel wire. Anchoring clamps are primarily used in power lines between residential buildings and industrial complexes, securing ADSS fiber optic cables, ABC cables, and telecommunications lines.
Anchoring clamps prevent wires from being affected by icing, breeze, or gravity while providing reliable installation when tensioned between transmission line supports. Installation involves tightening the cable using a pulley, attaching the clamp to a hook or bracket, placing the cable inside the wedges, and gradually releasing tension until the wedges secure the cable. Anchoring clamps are essential for maintaining the stability and safety of electrical connections in various outdoor environments.
Features of Anchoring Clamp:
• High tensile strength with corrosion-resistant materials
• Self-adjusting wedge mechanism for tool-free installation
• Compatible with cable diameters from 4mm to 20mm
• Weather-resistant construction for long-term outdoor use
• Prevents cable damage through even pressure distribution
• Meets international standards such as NFC 33-041
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wedge type anchoring clamp Drawing
Typ | Cross-section（mm2） | Messengers DIA（mm） | Breaking Load（KN） |
PA16 | 10-70 | 6-13 | 3 |
PA16-95 | 4-120 | 4-16 | 2.5 |
PA25 | 6-25 | 4-8 | 3.5 |
PA50 | 10-50 | 6-11 | 6 |
PA70 | 25-70 | 8-14 | 8 |
Häufig gestellte Fragen (FAQ)
What is an anchoring clamp?
An anchoring clamp is a device used to secure and stabilize overhead cables, particularly in power and telecommunication lines. It consists of a conical body, metal-toothed wedges, and a flexible hinge. Anchoring clamps are designed to maintain proper tension in cable lines while protecting the cable’s insulation.
Where are anchoring clamps commonly used?
Anchoring clamps are used in overhead power lines, telecommunication lines, and utility infrastructure. They’re commonly found:
- At the beginning and end of cable routes
- During sudden changes in direction or turns
- In cases of height differences between poles
- For fastening cables of high-voltage lines
- In last-mile networks and medium to long-span installations
What are the advantages of using anchoring clamps?
Anchoring clamps offer several benefits:
- Reliable wire fastening
- Simple design and cost-effective
- Quick and easy installation without special tools
- Versatility for various span lengths
- Protection against wind load vibration
- No need to remove cable insulation during installation
- Extended service life for overhead communication lines
How do you install an anchoring clamp?
To install an anchoring clamp:
- Insert the wedge into the clamp housing
- Place the cable inside the wedges
- Attach the clamp to the preinstalled hook or pole bracket
- Gradually loosen the tension on the cable until the wedges secure it
- Remove the tensioning equipment
- Secure the second side of the cable along the line
What factors should be considered when selecting an anchoring clamp?
When selecting an anchoring clamp, consider:
- Cable insulation diameter
- Type of cable (z.B., ADSS, LV-ABC)
- Distance between poles
- Cable tension requirements
- Environmental conditions (Temperatur, UV exposure)
- Span length (drop, kurz, medium, or long span)
How do anchoring clamps protect cables?
Anchoring clamps protect cables by:
- Preventing sagging due to wind, gravity, or icing
- Reducing the risk of cable damage and integrity destruction
- Extending the service life of overhead communication lines
- Providing secure fastening without damaging cable insulation
- Resisting rotational forces and environmental stresses
What materials are anchoring clamps made from?
Anchoring clamps are typically made from:
- Körper: High-strength cast aluminum alloy or durable plastic
- Keile: UV and weather-resistant engineering plastic or nylon
- Bail: Corrosion-resistant flexible stainless steel wire
- Fixing ring: Hot-dip galvanized steel wire
How do you maintain anchoring clamps?
To maintain anchoring clamps:
- Regularly inspect for damage or loose cables
- Clean to remove dirt and corrosive substances
- Apply appropriate lubricant to enhance durability
- Promptly repair or replace damaged clamps
- Store in a dry, protected location when not in use
Can anchoring clamps be used with ADSS cables?
Ja, anchoring clamps can be used with ADSS (Vollständig dielektrische selbsttragende) Kabel. They are designed to tension and secure ADSS cables on poles or other overhead line structures without damaging the cable’s insulation.