Crimping Sleeve ALPAR AL-CU 25-95/1.5-95 (Z208) single‑piercing for AL/CU conductors

ALPAR AL-CU 25-95/1.5-95 (Z208) single‑piercing crimping sleeve is designed to create secure mechanical and electrical joints between aluminium and copper conductors. The sleeve accommodates the conductor cross-sections indicated in the model designation and provides a compact, low-profile connection suitable for overhead lines, distribution networks and on-site repairs. The single‑piercing system enables reliable contact between dissimilar metals while maintaining mechanical strength and electrical continuity.

Advantages

The crimping sleeve delivers consistent contact pressure and reduced contact resistance through its single‑piercing design, ensuring long-term electrical performance. Constructed for compatibility with both aluminium and copper conductors, it minimises galvanic corrosion risk when installed correctly. Its compact form factor and pre-shaped internal geometry simplify installation and reduce the need for additional insulation or bulky joints.

Suitable for

• Electrical power distribution and branching of overhead and service lines
• Repairs and reinstatements of aluminium or copper conductors
• Jointing dissimilar conductor materials where a compact, reliable connection is required
• Field installations requiring mechanical strength and electrical continuity

Key specifications

• Compatible conductor cross-sections: 25–95 mm² for aluminium and 1.5–95 mm² where indicated for copper
• Single‑piercing contact system for AL/CU conductor pairs
• Compact, low‑profile sleeve geometry for tight installation spaces
• Designed for mechanical and electrical jointing in power distribution applications

How to use

Prepare conductors by stripping insulation to the required length and removing contaminants such as oxidation, dirt or grease from contact surfaces. Insert conductors into the sleeve according to the manufacturer’s orientation, ensuring correct alignment for the single‑piercing element to engage the conductor. Apply the specified crimping force using an appropriate hydraulic or manual crimping tool sized for the sleeve dimension until a secure deformation is achieved. After crimping, inspect the joint for correct compression and continuity; apply appropriate protective covering or insulation as required for the installation environment.

Usage recommendations

Use tools and crimping dies that match the sleeve dimensions and follow applicable installation standards and local regulations. When joining aluminium to copper conductors, ensure proper surface preparation and, if required by the installation practice, use corrosion-inhibiting compounds or additional protective measures. Verify mechanical integrity and electrical continuity after installation and perform periodic inspection as part of routine maintenance.