Self-Gripping Conductor Clamp C27.11 for Electrical Overhead Lines

The C27.11 self-gripping conductor clamp is a professional tensioning and holding tool designed for electrical conductors used in overhead power transmission and distribution lines. It is intended for operations involving the pulling, tensioning, installation and sag adjustment of conductors during the construction, modernization, maintenance and repair of overhead power lines.

The clamp is manufactured in Japan and is available in Poland through AP Energy distribution. It is designed for professional line-construction crews, utilities and contractors working on electrical overhead lines and power infrastructure.

Japanese Manufacturing Quality and Precision

Japanese tools for overhead line construction are valued for their precision manufacturing, reliability and robust construction, particularly in demanding professional applications.

The C27.11 features a self-gripping design (Self-Gripping Clamp / Come-Along Clamp). The tension applied to the conductor increases the gripping force of the jaws, providing a secure and stable hold during conductor installation and tensioning operations.

The clamp can be quickly installed on the conductor and used during various overhead line construction and maintenance activities.

Clamp for ACSR, AAAC and ACSS Conductors

The C27.11 is designed for conductors with an outside diameter of Ø 5–28 mm and can be used with various types of conductors commonly found in electrical power transmission and distribution systems, including:

• ACSR – Aluminium Conductor Steel Reinforced,
• AAAC – All Aluminium Alloy Conductor,
• ACSS – Aluminium Conductor Steel Supported,
• aluminium conductors,
• copper conductors.

The wide 5–28 mm conductor diameter range allows one clamp to be used with a variety of conductor types and sizes.

Self-Gripping Clamp for Conductor Tensioning

The C27.11 is designed for applications where a conductor must be securely held while the required pulling or tensioning force is transferred through the clamp.

Typical applications include:

• tensioning phase conductors,
• pulling and positioning conductors,
• conductor sag adjustment,
• installation of conductors on poles and support structures,
• replacement of existing conductors,
• maintenance and repair of overhead power lines,
• modernization of existing overhead networks,
• work on medium- and high-voltage lines,
• use with conductor pulling winches,
• applications involving tension and pulling-force measuring equipment.

The clamp can be used as part of a professional overhead line stringing system, together with conductor pulling winches, tensioners, dynamometers and other equipment used for overhead conductor installation.

Secure and Stable Conductor Grip

When pulling and tensioning electrical conductors, selecting the correct conductor clamp according to the conductor diameter, construction and required working load is essential.

The C27.11 has a maximum safe working load of 20 kN and is designed for conductors with a diameter of Ø 5–28 mm. The gripping jaw length is 120 mm. The clamp weighs approximately 1.9 kg and has overall dimensions of approximately 320 × 180 mm.

Before use, the conductor diameter, conductor construction and permissible pulling force must always be verified to ensure that the clamp is suitable for the specific application.

Applications in Overhead Line Construction

Self-gripping conductor clamps, conductor grips and come-along clamps are essential tools for professional crews working on electrical overhead lines.

The C27.11 can be used throughout different stages of overhead line construction and maintenance:

conductor pulling → conductor tensioning → sag adjustment → positioning → installation → maintenance and repair.

Its compact design and relatively low weight make the clamp practical for use on poles, towers and other overhead line structures.

Key Advantages of the C27.11

• Japanese manufacture,
• available in Poland through AP Energy distribution,
• professional design for overhead line applications,
• self-gripping clamping mechanism,
• suitable for conductors with a diameter of Ø 5–28 mm,
• maximum safe working load of 20 kN,
• 120 mm gripping jaw length,
• weight of approximately 1.9 kg,
• suitable for ACSR, AAAC and ACSS conductors,
• suitable for aluminium and copper conductors,
• designed for conductor pulling, tensioning and installation,
• suitable for professional overhead power line construction and maintenance.