Wraparound Sleeve Used in Cable Straight Joint

A wraparound sleeve is a specialized insulating and sealing component used in cable straight joints, especially in medium- and high-voltage power cables. Its primary purpose is to provide mechanical protection, environmental sealing, and electrical insulation where two cable ends are connected to form a continuous electrical path

.

Purpose and Function

When two cables are joined in a straight line (i.e., a straight joint), the joint area becomes a potential weak point in terms of insulation, moisture ingress, and mechanical stress. The wraparound sleeve serves several essential functions:

1. Insulation: It restores the dielectric strength over the joint area.
2. Moisture Protection: It creates a watertight seal to prevent ingress of water or contaminants.
3. Mechanical Protection: It safeguards the joint against physical damage, vibration, and environmental impact.
4. Thermal Endurance: The sleeve withstands temperature variations without degrading, ensuring long-term reliability.