Complete Guide to Heat Shrink Cable Accessories: Kits, Joints & Polymer Insulators for Indian Power Projects (2026)

Why Cable Accessories Are the Most Critical Component in Your Cable System

A power cable can cost thousands of rupees per metre. Yet when cable systems fail, the fault is rarely in the cable itself — it is almost always in the accessories: a poorly installed termination, a moisture-compromised joint or an incorrect insulator.

Getting cable accessories right means choosing products that are:

• ●Certified to IS 13573 and IEC 60502 (not just claiming compliance)
• ●Manufactured with consistent quality under ISO 9001:2015
• ●Installed correctly with proper technical support

This is what VIKCHEM has been delivering since 1988 — heat shrink termination kits, jointing kits, polymer insulators and power cable accessories to 1000+ utilities, EPC contractors and industrial clients across India.

Category 1: Heat Shrink Cable Termination Kits

Heat shrink termination kits are the most-used cable accessory in India's power sector. Every underground cable run requires terminations at both ends — wherever the cable connects to a transformer, switchgear, RMU or overhead line.

Key Technical Points

Stress Control: Medium voltage termination kits (3.3kV and above) must include a stress control layer — either a stress control tube or self-amalgamating tape — at the cable screen cut-back point. Without stress control, electric field concentration causes premature insulation failure. This is the most common installation error with low-quality accessories.

Moisture Sealing: Every interface — cable end, lug, screen connections — must be moisture-sealed. VIKCHEM's kits include mastic sealing at all critical interfaces.

IS 13573 Compliance: For all government tenders (DISCOMs, railways, PSUs), IS 13573 certification is mandatory. VIKCHEM's termination kits are fully type-tested to IS 13573.

Indoor vs Outdoor Selection

• ●Indoor kits: For transformer rooms, switchgear panels, indoor substations. Compact, no sheds.
• ●Outdoor kits: For pole-mounted transformers, cable sealing ends, overhead transitions. UV-stable with rain shed profile.

Voltage Range Coverage

VIKCHEM's termination kits cover 1.1kV, 3.3kV, 6.6kV, 11kV, 22kV and 33kV for XLPE, PVC, PILC and EPR cables — single and multi-core.

Category 2: Heat Shrink Cable Jointing Kits

Underground cable networks require joints wherever two cable lengths are connected. Heat shrink jointing technology is the modern standard — replacing slow, heavy resin joints with fast, reliable heat shrink assemblies.

Straight-Through Joints

Connect two lengths of the same cable type and voltage rating. The joint must restore the cable's full electrical insulation, screen continuity and mechanical strength. VIKCHEM's straight-through joints are rated for 1.1kV to 36kV.

Transition Joints (XLPE to PILC)

India has a massive legacy network of PILC cables being progressively replaced with XLPE. Where the two cable types meet, a transition joint is essential. VIKCHEM manufactures XLPE-to-PILC and XLPE-to-PVC transition joints for all voltage levels.

Why Heat Shrink Beats Resin

• ●Installation time: 60–90 min vs 3–4 hours for resin
• ●Reliability: Factory-controlled materials vs field-mixed resin
• ●Immediate backfill: No curing time — trench can be refilled immediately
• ●Compact dimensions: Smaller joint size for congested duct banks

See full specifications: Heat Shrink Cable Jointing Kits

Category 3: Composite Polymer Insulators (11kV to 400kV)

India's transmission and distribution utilities have overwhelmingly shifted to composite polymer insulators for new line construction. VIKCHEM manufactures polymer insulators for suspension, tension, line post, pin, disc and post applications.

Why Indian Engineers Prefer Polymer

• ●Coastal zones: Silicone rubber's hydrophobicity prevents conductive moisture films — dramatically reducing coastal flashovers vs porcelain
• ●Industrial areas: Superior tracking resistance in fly ash, chemical and pollution-heavy environments
• ●Weight advantage: 90% lighter — manual installation possible at 132kV, reduces transport costs
• ●Vandalism resistance: Does not shatter — critical for rural line sections

See detailed comparison: Polymer vs Porcelain Insulator Guide

Category 4: Touch Proof Termination Kits (36kV)

For RMU, compact substation and metal-clad switchgear applications, touch proof termination kits (elbow connectors) are mandatory. They eliminate exposed live conductors at the switchgear interface — a non-negotiable safety requirement for modern switchgear designs.

Category 5: Power Cable Accessories

VIKCHEM's power cable accessories range covers all cable protection and connection components for LV to 36kV:

• ●Compression lugs (copper, aluminium) — for cable conductor termination
• ●Copper ferrules — for cable joint conductor connections
• ●Bus bar sleeves — heat shrink insulation for bare busbars
• ●Heat shrink tubing — general insulation and protection
• ●Self-amalgamating tapes — moisture-proof sealing at cable entries
• ●Breakout boots — multi-core cable breakout insulation
• ●End caps — cable drum end sealing for storage and transit
• ●Earthing braids — tinned copper braid for screen earthing

Comparison: VIKCHEM vs Imported Brands (3M, Raychem)

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IS/IEC Standards Reference

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Factor	VIKCHEM	Imported (3M, Raychem)
IS 13573 certification	Yes — mandatory for India	Often absent or self-certified
Price	30–50% lower — no import duty	Higher — import duty + logistics
Delivery	Ex-stock India — 3–7 days	3–8 weeks import lead time
Technical support	India-based engineers	Limited India presence
Make in India eligible	Yes — ZeD Gold certified	No
PSU/Railway tender eligibility	Yes	Limited (non-IS certified)
Standard	Scope	Applies To
IS 13573	Joints & terminations for polymeric cables	All MV cable accessories
IEC 60502-4	Accessories for 6kV–30kV XLPE cables	Terminations, joints
IEC 61109	Composite insulators for AC overhead lines	Polymer insulators
IS C29-11	Composite insulators for overhead lines	Polymer insulators
HD 629.1	European cable accessories standard	Export products

Selecting the Right Supplier

When evaluating cable accessory suppliers for your next project, verify:

• ●IS 13573 type test certificates (demand the actual test reports — not just a claim)
• ●ISO 9001:2015 scope covering cable accessories manufacturing
• ●Track record with projects of similar voltage and cable type
• ●Technical support availability in India
• ●Ability to supply for all cable types in your network (XLPE, PILC, PVC, EPR)

Frequently Asked Questions

Q: Do VIKCHEM products qualify for government DISCOM tenders? Yes. VIKCHEM's products are IS 13573 certified and the company holds all certifications required for Indian government procurement under Make in India guidelines.

Q: Can VIKCHEM supply for projects in Nepal, Bangladesh and Sri Lanka? Yes. VIKCHEM exports to 15+ countries including South Asian neighbours. Products meet IEC standards for international projects.

Q: How quickly can VIKCHEM supply large quantities for EPC projects? VIKCHEM maintains ex-stock inventory at our Yamuna Nagar factory. Call +91-99966-30201 to discuss project quantities and delivery schedules.