RAYCHEM 11KV 3C*50SQMM INDOOR TERMINATION KIT

About RAYCHEM 11KV 3C*50SQMM INDOOR TERMINATION KIT

A Raychem 11kV, 3-core x 50 sq. mm indoor termination kit is an engineered set of components used to connect a medium voltage armored power cable to electrical equipment like switchgear or transformers inside a building. Its primary function is to provide a safe, reliable, and durable connection by managing electrical stress and protecting against environmental factors.

Technical Specifications

• Manufacturer: Raychem (a brand of TE Connectivity), known for its polymer and heat-shrink technology.

• Voltage Rating: 11kV (11,000 Volts), suitable for medium voltage (MV) electrical networks.

• Cable Type: Designed for a 3-core (3C) armored or unarmored cable. This means the main cable contains three separate insulated conductors.

• Conductor Size: Fits a cable with a conductor cross-sectional area of 50 sq. mm (50mm2).

• Application Environment: Indoor use only. It's designed for controlled environments, protected from direct rain, UV radiation, and heavy pollution.

Kit Components and Function

An indoor termination kit contains several pre-engineered, heat-shrinkable components that are applied to the prepared end of the cable. While exact contents can vary slightly, a typical kit includes:

• Heat-Shrink Breakout Boot: A 3-fingered component that seals the point where the three individual cores exit the main cable's outer jacket. This prevents moisture ingress and provides mechanical protection.

• Stress Control Tubing: This is the most critical component. When the cable's outer metallic screen is removed, it creates a point of high electrical stress. This tubing is applied over the core insulation and screen cutback point to smooth out the electrical field, preventing electrical discharge and insulation breakdown.

• Non-Tracking Insulating Skirts/Sheds (for Indoor Kits): These are red, heat-shrinkable tubes applied over each of the three cores. They provide insulation, protect against flashover between phases and to the ground, and are made from a "non-tracking" material that resists the formation of conductive carbon paths on its surface.

• Sealing Mastic: Various sealants and mastics are included to fill voids and ensure a moisture-proof seal at the breakout and lug ends.

• Cable Lugs: High-quality crimp lugs are usually included to terminate the conductors onto the equipment's busbars. These are not always standard and may need to be ordered separately based on the specific stud size.

Key Features and Benefits

• Reliability: Raychem's heat-shrink technology provides excellent insulation, long-term performance, and high reliability in MV networks.

• Ease of Installation: The heat-shrink components are straightforward to install with a standard heat gun, reducing installation time and potential errors.

• Compact Design: The termination has a slim and compact profile, making it suitable for use in confined spaces like modern switchgear panels.

• Superior Electrical Performance: The stress control system effectively manages electric fields, ensuring safe operation and preventing premature failure of the termination.