10kV Single-Core Heat Shrink Straight-Through Joint

Consider a feeder repair in which the damaged section has already been removed. The replacement conductor can be connected, but the cable cannot be returned to service simply by insulating the metal connector. The prepared ends also interrupt the cable’s semiconductive screens, metallic shielding and outer protective sheath.

The RIKI 10kV single-core heat shrink straight-through joint is offered for 6/10kV and 8.7/10kV XLPE-insulated power cables. Its four conductor-size selections cover 25–50, 70–120, 150–240 and 300–500 mm². The kit uses heat-recoverable components to form the required jointing arrangement around a prepared in-line connection.

At the Conductor Connection

The conductor connector forms the electrical path between the two cable lengths. Its material compatibility, barrel or connector dimensions and approved installation method need to be established before the cable ends are prepared. A connector that fits the conductor cross-section electrically may still create dimensional difficulties for the insulation components surrounding it.

The supplied product image shows several sleeves and accessories, but the exact connector specification and whether a conductor connector is included must be confirmed in the order configuration. The photograph should not be used as a complete bill of materials.

Across the Screen Ends

Medium-voltage cable insulation operates together with conductive screening layers. Once those layers are removed near the splice, the electric field distribution changes. A suitable joint must provide the required electrical stress-control arrangement at the screen transitions and around the connector area.

These functions cannot be established from the outer diameter of the black tubing alone. The cable insulation outside diameter, the preparation dimensions and the relevant joint component specification must be matched. Metallic-screen restoration and bonding requirements also depend on whether the original cable uses copper wires, copper tape or another screen design.

At the Outside of the Finished Joint

The protective outer arrangement addresses a different requirement: covering the completed electrical joint and restoring the relevant environmental and mechanical protection. The illustrated kit contains two long black tubes along with smaller sleeves and other accessories. Their exact assembly order and functions should be determined from the product-specific installation instructions.

Heat shrink materials recover under applied heat. Correct recovery depends on following the required heating method, component positioning and cooling procedure. The catalog does not establish that every configuration is suitable for direct burial, permanent immersion or a particular water-ingress classification.

When the Two Cables Are Not Identical

A maintenance contractor may need to connect a new XLPE cable to an older cable made by another manufacturer. Both ends may have the same nominal voltage and conductor cross-section, yet differ in insulation diameter, metallic-screen construction or sheath thickness.

For this type of enquiry, submit the datasheets for both cable ends. Identify any difference in conductor material, insulation dimensions, screening and connector requirements. A standard conductor-size selection does not automatically qualify the kit for every transition between cable constructions.

For purchasing: Specify the complete cable voltage designation, conductor size and material, insulation outside diameter, metallic screen details, connector arrangement and installation environment. The final package should be reviewed against the cable data before the material schedule is approved.