Medium-voltage cable terminations are critical in maintaining the integrity of power transmission and distribution systems. A poorly terminated cable can lead to breakdowns, power outages, or even accidents. That’s why industries, power utilities, and infrastructure projects trust 3M heat shrinkable technology to ensure long-term protection, durability, and safety.

By combining advanced insulation, moisture-sealing, and stress-control materials, this kit provides comprehensive electrical, mechanical, and environmental protection for high-performance operations. Whether installed indoors or outdoors, it offers superior resistance against UV rays, tracking, partial discharges, and weather conditions, ensuring years of reliable service.

Technical Specifications

Features & Benefits

1. High Reliability – Designed to withstand 11kV medium-voltage systems, ensuring long-term reliability under demanding conditions.

2. Easy Installation – Heat-shrinkable design makes installation quick, safe, and hassle-free without requiring special tools.

3. Superior Insulation – Provides excellent electrical insulation to prevent failures, tracking, and flashovers.

4. Moisture Protection – Strong sealing against water ingress, ensuring consistent performance even in humid or rainy conditions.

5. UV and Weather Resistant – Suitable for outdoor applications, capable of handling extreme sun exposure and harsh climates.

6. Compact & Lightweight – Easy to transport and install in tight spaces without compromising efficiency.

7. Mechanical Strength – Withstands physical stress, vibrations, and mechanical impacts in industrial environments.

8. Safety Assured – Reduces risks of electrical faults, fire hazards, and operational breakdowns.

9. Long Service Life – Built to last for decades, ensuring minimal maintenance and reduced downtime.

10. Trusted Brand – Manufactured by 3M, a globally recognized name in electrical innovation and quality assurance.

    Applications

    The 3M 11kV 3 Core 185 sq mm Heat Shrinkable Indoor Termination Kit is widely used in multiple industries and sectors, including:

    • Power Utilities – For termination of 11kV medium-voltage distribution lines.

    • Industrial Plants – Reliable cable terminations for manufacturing, steel, cement, and chemical plants.

    • Infrastructure Projects – Airports, metro rail, highways, tunnels, and large construction projects.

    • Renewable Energy – Used in solar farms, wind power plants, and hydroelectric installations.

    • Oil & Gas – Suitable for harsh environments in refineries, offshore rigs, and petrochemical plants.

    • Commercial Buildings – For safe power distribution in shopping malls, IT parks, and smart cities.

    • Mining – Rugged enough to handle demanding mining environments with dust and moisture exposure.

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    Installation Overview

    The heat shrinkable termination kit is designed for ease of use. Below is a simplified step-by-step overview of the process (always follow 3M’s official installation manual for actual use):

    1. Prepare the Cable – Cut and strip the cable according to the required dimensions. Clean the surface thoroughly.

    2. Position Components – Slide the heat shrink tubes, stress control tubes, and other components over the cable before termination.

    3. Install Stress Control – Apply stress control tubing to manage electrical stress at the cut ends.

    4. Shrink Insulation Layers – Use a gas torch to heat-shrink the insulation tubing, ensuring a tight fit and proper sealing.

    5. Apply Earthing – Connect and secure earthing components as required.

    6. Seal Outer Protection – Shrink the outer sheath to provide moisture and environmental protection.

    7. Final Inspection – Verify correct alignment, sealing, and overall termination integrity.

    👉 The result is a fully sealed, insulated, and mechanically protected cable termination ready for safe operation.

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    Compliance & Standards

    The 3M 11kV termination kit meets the highest international standards, ensuring it is approved for use across industries worldwide.

    • IEC 60502-4 – Power cables and accessories for rated voltages from 1kV to 30kV

    • IEEE 48 – Test procedures and requirements for medium-voltage cable terminations

    • IS 13573 – Indian standards for cable accessories

    • CENELEC HD 629.1 S2 – European standards for cable accessories

    By adhering to these standards, the kit guarantees safety, reliability, and long-term performance.

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    Safety Aspects

    • Provides touch-safe termination to prevent electrical accidents.

    • Reduces the risk of flashovers, partial discharges, and short circuits.

    • Prevents fire hazards with flame-retardant materials.

    • Suitable for use in hazardous environments where safety is critical.

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    Why Choose 3M Over Competitors?

    • Proven Track Record – 3M has decades of expertise in electrical insulation and cable accessories.

    • Innovative Technology – Advanced heat shrinkable materials with stress control features.

    • Global Availability – Widely used across more than 100 countries.

    • Low Total Cost of Ownership – Long service life and minimal maintenance save time and money.

    • Trusted by Professionals – Preferred choice for contractors, utilities, and industrial engineers.

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    Frequently Asked Questions (FAQs)

    Q1: What is the voltage rating of this kit?
    A: This kit is designed for 11kV medium-voltage applications.

    Q2: Which cable types are supported?
    A: It supports 3 core,  XLPE and PILC cables.

    Q3: Can it be used outdoors?
    A: Yes, it is UV resistant, weatherproof, and moisture-sealed, making it suitable for both indoor and outdoor terminations.

    Q4: How long does the kit last?
    A: With proper installation, it provides a service life of over 25 years.

    Q5: Does it meet international standards?
    A: Yes, it complies with IEC, IEEE, IS, and CENELEC standards.

    Q6: Do I need special tools for installation?
    A: No, only a standard heating torch is required for shrinking.

    Q7: What makes 3M better than other brands?
    A: 3M products are globally recognized for reliability, long life, and superior material technology.

    Conclusion

    The 3M 11kV 3 Core Heat Shrinkable Indoor Termination Kit is the ultimate solution for safe, reliable, and long-lasting cable termination in medium-voltage power systems. With advanced heat shrinkable technology, superior sealing, excellent electrical insulation, and compliance with global standards, this kit ensures uninterrupted power distribution across industries and infrastructure.

    Whether you are working on a utility project, industrial setup, renewable energy farm, or commercial building, 3M’s heat shrinkable termination kit guarantees performance you can trust.

    Invest in the best – choose 3M cable accessories for unmatched safety, durability, and reliability.

Installation Process & Guidelines for 3M 11kV 3 Core  Heat Shrinkable Indoor Termination Kit

⚠️ Important Note: Always follow 3M’s official installation instructions supplied with the kit. The process below is a general guideline for informational purposes only. Installation must be carried out by qualified electricians or cable jointers.

Required Tools & Equipment

• Cable preparation tools (cable stripper, insulation knife, measuring scale)

• Wire brush and cleaning cloths

• Emery paper for smoothing conductor surfaces

• Crimping tool for lugs (if not pre-installed)

• Propane/butane gas torch (for controlled heating)

• Personal protective equipment (PPE): insulated gloves, helmet, safety glasses

Installation Steps

1. Preparation

1. Verify that the kit matches the cable type, size, and voltage rating.

2. De-energize the system and ensure cables are grounded before starting work.

3. Cut the cable to the required length.

4. Carefully remove the outer sheath of the cable as per the dimensions given in the instruction sheet.

2. Core Separation & Cleaning

1. Gently separate the three cores of the cable.

2. Remove fillers, binders, and semi-conductive screens without damaging insulation.

3. Clean all exposed surfaces with a lint-free cloth and recommended cleaning solvent.

3. Positioning of Components

1. Slide all necessary heat shrink tubes, stress control tubes, and outer sealing components onto the cable before termination begins.

2. Ensure correct orientation and sequence as per the kit diagram.

4. Stress Control Installation

1. Place the stress control tubing over the insulation cutback area.

2. Use a gas torch to gently shrink the tubing from the center outward, ensuring uniform application.

3. This step helps control electrical stress at the insulation shield cutback.

5. Insulation & Anti-Tracking Tubes

1. Position the insulating tube over each cable core.

2. Apply heat evenly with a torch until the tube shrinks tightly onto the insulation.

3. Add anti-tracking tubes for outdoor terminations to provide UV and pollution resistance.

6. Lug Installation

1. Strip the conductor to the required length.

2. Crimp the supplied lugs using a compatible crimping tool.

3. Smooth the crimp area with emery paper to avoid sharp edges.

7. Earthing Connection

1. Fix the earthing braid as per the instructions.

2. Ensure proper contact with the metallic screen/shield for safety grounding.

8. Outer Sealing

1. Slide the outer sealing tube over the completed termination.

2. Heat-shrink it from the center outward for full sealing against moisture and environmental exposure.

3. Check for adhesive flow at the tube ends to confirm proper sealing.

9. Final Inspection

1. Ensure all tubes are properly shrunk and tightly fitted.

2. Check that no sharp edges or exposed conductor parts remain.

3. Verify lug connections and earthing arrangements.

4. Allow the assembly to cool before energizing.

General Guidelines & Best Practices

• Always store the kit in a dry, shaded place before use.

• Follow the installation drawing and dimension sheet included with the kit.

• Avoid overheating the tubes; use uniform torch movement to prevent damage.

• Maintain proper clearances between phases during termination.

• For outdoor installations, ensure adequate creepage distance and apply sealing as recommended.

• Only trained and certified personnel should perform medium-voltage terminations.

• Perform insulation resistance testing before energizing the cable