15kV And 35kV Indoor Cold Shrink AIS Cable Termination Kit
✅ No flame or heating required (safer installation)
✅ Excellent moisture and environmental resistance,IP68
✅ Flexible and adaptable to cable irregularities
✅ Long service life (20+ years)
✅ Faster installation than heat-shrink
- Product Introduction
This pre-expanded, silicone rubber sleeve system is engineered to safely terminate medium and high-voltage power cables at indoor switchgear, transformers, and other equipment. The kit features a high-grade elastic rubber tube that is factory-expanded and held onto a removable plastic core. During installation, technicians simply position the unit on the prepared cable and pull the core out. The rubber instantly shrinks with constant, controlled pressure, forming a tight, seamless seal without the need for open flames or external heat sources.
Core Functions & Advantages
Electrical Stress Control
Smoothly grades the electrical field at the critical point where the cable screen is cut, ensuring safe and stable operation.
Safe Phase Separation
Provides robust insulation to prevent phase-to-phase or phase-to-ground flashovers in the confined spaces of AIS switchgear.
Environmental Protection
Creates a reliable seal against dust, condensation, and substation atmospheres, ensuring long-term reliability.
Compact Spatial Design
Specifically engineered with a minimalist profile to fit perfectly into the constrained compartments of metal-clad indoor switchgear.
Technical Specifications
| Feature | 15kV Specification | 35kV Specification |
|---|---|---|
| Rated Voltage | 12/20 kV | 20/35 kV |
| Highest System Voltage | 17.5 kV | 40.5 kV |
| Applicable Cable Size | 25 - 630 mm² | 50 - 630 mm² |
| Power Frequency Withstand | 45 kV | 105 kV |
| Lightning Impulse Withstand | 110 kV | 200 kV |
| Partial Discharge | ≤ 10pC @ 15 kV | ≤ 10pC @ 35 kV |
| Creepage Distance | ≥ 31 mm/kV | ≥ 31 mm/kV |
| Material | High-Grade Silicone Rubber | High-Grade Silicone Rubber |
Indoor vs. Outdoor Comparison
| Feature | Indoor Termination Kit | Outdoor Termination Kit |
|---|---|---|
| Primary Purpose | Stress control & phase segregation | Stress control & weather protection |
| Weathersheds | Short, minimal creepage distance | Long, multiple sheds for rain & pollution |
| Sealing Level | Protects against condensation & humidity | Fully waterproof & weather-tight |
| Material | High-grade silicone rubber | Heavy-duty, UV-resistant silicone |
| Size & Design | Compact, space-saving for switchgear | Larger, bulkier with external sheds |
Kit Contents
- Cold Shrink Termination Body: The main silicone rubber component that provides insulation.
- Grounding Braid: Tinned copper braid for connecting the cable shield to earth.
- Terminal Lug: Copper or aluminum lug for connecting to the switchgear bushing.
- Sealing Mastic Tapes: For creating a moisture-tight seal at the cable jacket interface.
- Hardware & Accessories: Stainless steel bolts, nuts, washers, and cable ties.
- Preparation Tools: Abrasive paper and cleaning wipes for surface preparation.
Key Advantages for Indoor Applications
- Flame-Free Installation: Eliminates fire hazards, smoke, and toxic fumes, ensuring maximum safety in confined switchgear rooms and substation environments.
- Rapid & Effortless Deployment: Significantly reduces installation time and labor costs compared to traditional heat-shrink or taping systems. No special tools or heating equipment required.
- Consistent, Error-Free Quality: Factory-pre-expanded design guarantees a uniform, precise fit every time. It eliminates human error, air voids, and the inconsistencies of manual taping.
- Superior Moisture Sealing: The constant radial pressure from the high-grade silicone rubber creates a permanent, airtight, and moisture-tight seal, effectively preventing condensation and insulation failure.
- Long-Term Reliability: Premium silicone rubber offers exceptional dielectric strength and outstanding anti-aging properties, ensuring decades of maintenance-free performance.
FAQ
Q1: What is the expected lifespan of these cold shrink terminations?
A: Manufactured from premium, high-grade silicone rubber, our cold shrink terminations offer excellent resistance to UV, ozone, and extreme temperatures. Under normal operating conditions, they are designed to provide reliable, maintenance-free service for over 20 years.
Q2: Do I need special tools to install the indoor termination kit?
A: No. Unlike heat-shrink terminations, our cold shrink system requires no open flames, gas torches, or special heating equipment. Installation only requires standard electrician hand tools (such as utility knives and wrenches) to prepare the cable and pull the plastic core.
Q3: Can I use this indoor termination kit for outdoor applications?
A: No. Indoor terminations are specifically designed with minimal creepage distances to fit into compact switchgear. For outdoor use, you must select our Outdoor Cold Shrink Termination Kits, which feature extended weathersheds and UV-resistant materials to withstand rain, pollution, and extreme weather.
Q4: Does this kit fit all cable sizes?
A: Our kits are available in specific ranges to ensure a perfect, tight seal. For example, the 15kV kit typically covers 25mm² to 630mm², while the 35kV kit covers 50mm² to 630mm². Please check the technical parameters or contact us with your exact cable specifications to get the correct model.
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