| Quantity: | |
|---|---|
As a premier manufacturer and direct supplier of advanced electrical infrastructure components, we present the 26/35kV XLPE Cable Cold Shrinkable Indoor Termination for Three Cores. Engineered specifically for demanding industrial environments and large-scale power grid projects, this premium termination kit delivers uncompromising safety and operational longevity. By streamlining the procurement process for high-voltage accessories, we provide a solution that minimizes installation time while maximizing network reliability.
Core Material: High-quality, injection-molded liquid silicone rubber.
Voltage Compatibility: Optimized for 26/35kV three-core XLPE/EPR cables.
Installation Method: Torch-free cold shrinkable expansion structure.
Lifespan Expectancy: Engineered for over 20 years of continuous service.
The 26/35kV XLPE Cable Cold Shrinkable Indoor Termination represents the pinnacle of modern cable accessory engineering, designed to seamlessly manage the intense electrical stress found in high-voltage networks. At the heart of this termination system is a meticulously prefabricated main body, integrating a highly precise stress cone and an insulating layer. Crafted through advanced plastic injection molding utilizing premium liquid silicone rubber, the termination boasts a smooth, flawless tactile finish that translates directly into superior electrical insulation. When handled, the material feels supple yet remarkably resilient, indicative of its high elongation capabilities and exceptional tear strength. This unique material composition ensures that the termination maintains a constant, uniform radial pressure against the cable body throughout its entire service life, effectively acting as a second skin.
In high-voltage applications, the interface between the cable and the accessory is critical. This cold shrinkable termination eliminates the dreaded respiration creepage breakdown that often plagues inferior products during the thermal cycling of active cable runs. As the cable heats and cools, expanding and contracting, the liquid silicone rubber dynamically adjusts, maintaining an impermeable, tight package force. There are no microscopic air gaps left behind, and the uniform electric field capacity is strictly preserved. Furthermore, the multi-core fingerstall and relative colormetric tubes are designed to perfectly match the core material requirements of complex industrial setups, ensuring absolute protection of the cable insulation. The result is a silent, stable, and incredibly secure connection that facility managers and network engineers can trust implicitly, completely devoid of the vulnerabilities associated with traditional heat-shrink alternatives.
To facilitate precise engineering calculations and ensure perfect compatibility with your project requirements, please review the comprehensive technical parameters below. These specifications encompass dimensional data across different voltage classes and rigorous electrical performance test results.
Size (mm) | 8.7/15kV | 12/20kV | 18/30kV | 26/35kV |
|---|---|---|---|---|
Outdoor Termination L | 252 | 370 | 370 | 450 |
Outdoor Termination A | ≥800 | ≥950 | ≥950 | ≥1300 |
Indoor Termination L | 180 | 288 | 288 | 370 |
Indoor Termination A | ≥700 | ≥850 | ≥850 | ≥1200 |
Middle Joint L | 378 | 430 | 430 | 488 |
Middle Joint A | 1300 | 1600 | 1600 | 1800 |
Voltage | Section Number 1 (mm²) | Section Number 2 (mm²) | Section Number 3 (mm²) | Section Number 4 (mm²) |
|---|---|---|---|---|
8.7/15 kV | 25-50 | 70-120 | 150-240 | 300-400 |
12/20, 18/30, 26/35 kV | 50-95 | 120-185 | 240-400 | 500-630 |
Test Item | 6/10(12.5)kV | 8.7/15(17.5)kV | 26/35(40.5)kV | Railway Uo=27.5kV | Test Result |
|---|---|---|---|---|---|
5min frequency voltage test | no flashover, without breakdown under 4.5Uo | no flashover, without breakdown | |||
1min frequency voltage under rain test | no flashover, without breakdown under 4Uo | no flashover, without breakdown | |||
Partial discharge at room temperature test | discharge volume under 1.73Uo ≤10PC | ≤1.6pC | |||
Constant voltage load cycle in the air test | heated 2.5Uo and conductor to a temperature to 95-100°C three times, no flashover, without breakdown | no flashover, without breakdown | |||
Partial discharge at high temperature test | heated cable conductor to 95-100°C, discharge volume under 1.73Uo ≤10PC | ≤1.6pC | |||
Impulse voltage at high temperature test | 75kV | 95kV | 200kV | 250kV | heated cable conductor to 95-100°C, both positive and negative polarity 10 times, no flashover, without breakdown |
Constant voltage load cycle test | heated 2.5Uo and conductor to a temperature to 95-100°C sixty times, no flashover, without breakdown | no flashover, without breakdown | |||
Impulse voltage test | 75kV | 95kV | 200kV | 250kV | both positive and negative polarity 10 times, no flashover, without breakdown |
15min frequency voltage test | no flashover, without breakdown under 2.5Uo | no flashover, without breakdown | |||
Outdoor termination salt spray test | 1.25Uo, 1000h, no flashover, without breakdown, no significant electrical corrosion and mechanical damage | no flashover, without breakdown | |||
Indoor termination wet test | 1.25Uo, 300h, no flashover, without breakdown, no significant electrical corrosion and mechanical damage | no flashover, without breakdown | |||
Investing in high-grade termination accessories directly impacts the baseline profitability of power distribution networks by drastically reducing maintenance intervals and preventing catastrophic failures. Our cold shrinkable terminations are engineered to deliver immediate value upon installation and sustained performance over decades.
Uniform Electric Field Distribution: The geometrically optimized stress cone seamlessly diffuses high-voltage electrical stress at the cable shield cut-off point, mitigating the risk of insulation degradation.
Small Residual Deformation: Thanks to the advanced expansion support tube and premium silicone, the material snaps back with immense force, leaving minimal residual deformation and ensuring a vice-like grip on the cable.
Integrated Protection: The inclusion of marking tubes, copper screen, copper braid wire, and three-fingered tubes provides a comprehensive, all-in-one protective barrier against mechanical and electrical threats.
Zero-Respiration Design: The dynamic contraction capability actively prevents the "breathing" effect during thermal load cycles, entirely locking out moisture and contaminants.
The foundation of any reliable cable accessory lies in its material composition. We utilize exclusively top-tier liquid silicone rubber, chosen for its extraordinary physical characteristics that far surpass traditional EPDM or heat-shrink plastics. This material is not merely a covering; it is an active, responsive barrier that safeguards your infrastructure investments.
Exceptional Elasticity and Recovery: The silicone rubber stretches smoothly over the cable and instantly retracts with a satisfying, airtight snap once the inner core is removed, maintaining active radial pressure.
Superior Hydrophobicity: The surface of the termination naturally repels water. Moisture beads up and rolls off instantly, preventing the formation of conductive water tracks on the surface.
High Tear Resistance: Designed to withstand the rigors of industrial installation, the material resists punctures and tears, even when manipulated in tight, abrasive environments.
Thermal Stability: The molecular structure of the liquid silicone remains perfectly stable under extreme temperature fluctuations, never becoming brittle in freezing conditions or melting under heavy electrical loads.
For facility operators and grid managers, electrical safety is the ultimate metric. This 26/35kV termination is subjected to a battery of punishing tests to ensure it performs flawlessly under the most severe electrical stresses imaginable. The data speaks for itself, providing absolute peace of mind for high-stakes power distribution.
Ultra-Low Partial Discharge: Testing confirms a discharge volume of ≤10pC (and ≤1.6pC for railway standards) under 1.73Uo at both room and high temperatures, ensuring silent, invisible protection without progressive insulation damage.
Lightning Impulse Resilience: Capable of withstanding a 200kV impulse voltage test (both positive and negative polarity, 10 times) without a single instance of flashover or breakdown, safeguarding against unpredictable atmospheric surges.
Load Cycle Endurance: Proven to endure constant voltage load cycles in the air, heated to 95-100°C for sixty cycles without failure, demonstrating absolute reliability during peak energy demand periods.
Overvoltage Protection: Passes the 5-minute frequency voltage test under 4.5Uo without breakdown, providing a massive safety margin above standard operating conditions.
Time is a critical resource in large-scale infrastructure projects. Our cold shrinkable technology revolutionizes the installation process, stripping away the complexities, hazards, and hidden costs associated with traditional termination methods. The result is a faster, safer, and more consistent deployment across your entire network.
Torch-Free Safety: The completely non-flammable installation process eliminates the need for open flames or heat guns, making it perfectly safe for use in confined spaces, chemical plants, and explosive environments.
Tool-Less Contraction: Installation requires no specialized crimping or heating tools. The technician simply unwinds the internal support spiral, and the termination automatically shrinks to form a flawless, factory-grade seal.
Reduced Labor Costs: The intuitive design drastically cuts down the time required per termination. Minimal specialized training is needed, allowing your workforce to complete massive installations in a fraction of the expected timeframe.
Error-Proof Application: By removing the variables of uneven heating or incorrect shrinking techniques, the cold shrink method guarantees uniform pressure and positioning every single time, eliminating human error.
Industrial power systems rarely operate in pristine conditions. Whether facing the biting salt winds of a coastal facility or the damp, stagnant air of an underground vault, this termination is engineered to shrug off environmental assaults that would quickly degrade lesser materials.
Extreme Moisture Barrier: Having passed the rigorous 300-hour indoor termination wet test at 1.25Uo without flashover or electrical corrosion, it guarantees flawless operation in highly humid or condensation-prone indoor environments.
Salt Spray Immunity: The outdoor variants have conquered the brutal 1000-hour salt spray test, proving their worth for offshore platforms, coastal industrial parks, and heavily polluted zones.
UV and Ozone Resistance: The premium silicone formulation inherently resists the degrading effects of ultraviolet radiation and atmospheric ozone, preventing surface cracking and chalking over decades of exposure.
Chemical Defense: The smooth, non-porous surface resists the accumulation of industrial dust, chemical vapors, and airborne contaminants, maintaining its high surface tracking resistance.
A fragmented supply chain complicates engineering designs. We offer a highly versatile, comprehensive product line that adapts to virtually any medium-to-high voltage requirement, ensuring seamless integration into your existing or planned infrastructure.
Broad Voltage Range: Fully compatible across multiple voltage classes, including 6/10kV, 8.7/15kV, 12/20kV, 18/30kV, and 26/35kV, allowing for standardized procurement across diverse project phases.
Extensive Cross-Section Support: The dynamic expansion capability comfortably accommodates a wide array of cable sizes, from a compact 25mm² up to massive 630mm² conductors, reducing the need to stock dozens of specific sizes.
Insulation Compatibility: Perfectly engineered to interface with both XLPE (Cross-linked Polyethylene) and EPR (Ethylene Propylene Rubber) multi-core cables, ensuring broad applicability.
Complete Accessory Ecosystem: Beyond indoor terminations, the system perfectly aligns with our 4E-WLS outdoor terminations and 4E-JLS middle joints, providing a unified, end-to-end cable splicing and termination solution.
When procuring critical infrastructure components, trust must be backed by verifiable standards and long-term commitments. Our manufacturing processes are governed by strict quality control protocols, ensuring that every termination delivered to your site is an asset, not a liability.
International Compliance: The design, testing, and performance metrics are engineered in reference to stringent global electrical standards, including IEC 60502-4, GB/T 12706.4, and IEEE 48.
Extended Operational Lifespan: Formulated from aging-resistant materials, these accessories are guaranteed to deliver a service life exceeding 20 years, dramatically lowering the total cost of ownership for grid operators.
Zero-Defect Manufacturing: Utilizing advanced liquid silicone injection molding ensures that every prefabricated body is free from internal voids, impurities, or micro-fractures prior to factory dispatch.
Maintenance-Free Operation: Once installed, the constant radial pressure and anti-tracking surface require zero ongoing maintenance, freeing up your engineering teams for more critical tasks.
The versatility and ruggedness of the 26/35kV XLPE Cold Shrinkable Indoor Termination make it the accessory of choice for a wide spectrum of high-demand sectors. It provides the hidden, reliable backbone that keeps modern industries powered and operational.
Industrial and Commercial Buildings: Provides ultra-reliable, compact power connections within the substations and switchgear rooms of large-scale manufacturing plants, data centers, and commercial high-rises.
Renewable Energy Systems: Perfectly suited for the fluctuating loads and harsh environments of wind farm collector networks and utility-scale solar energy grid interconnections.
Railway and Transit Networks: Meets the specialized high-voltage demands (Uo=27.5kV) of electrified railway systems, ensuring uninterrupted power to critical transit infrastructure.
Underground Grid Modernization: The ideal solution for upgrading aging urban power grids, where space is limited, moisture is prevalent, and torch-based installations are strictly prohibited.
Selecting the right manufacturing partner is just as critical as selecting the right component. We bring decades of specialized expertise in high-voltage cable accessories, offering unparalleled support to procurement managers and lead engineers globally.
Direct Manufacturer Advantage: By sourcing directly from the factory floor, you bypass intermediary markups, securing premium-grade electrical components at highly competitive project pricing.
Consistent Supply Chain: We maintain robust production capacities, ensuring that even the most massive, time-sensitive infrastructure projects receive their materials exactly on schedule.
Rigorous Factory Testing: Every batch undergoes exhaustive electrical and mechanical testing in our state-of-the-art laboratories before shipment, ensuring a 100% pass rate upon field installation.
Technical Engineering Support: Our team of high-voltage specialists is available to assist with complex project specifications, cable matching, and customized accessory solutions.
To assist your engineering and procurement teams in making an informed decision, we have compiled answers to the most critical questions regarding our cold shrinkable terminations.
Q: How does the waterproof performance of this cold shrink termination compare to traditional methods?
A: Our cold shrinkable accessories offer vastly superior waterproof performance. The liquid silicone rubber exerts a continuous, active radial pressure on the cable. Combined with rigorous watertight testing and a 300-hour wet test clearance, it forms an impenetrable barrier against moisture, making it exceptionally reliable in humid or underground environments.
Q: What is the expected service life of the product under continuous high-voltage operation?
A: Engineered from high-quality, aging-resistant liquid silicone rubber, the service life of our terminations generally exceeds 20 years. The material is highly resistant to UV, ozone, and thermal degradation, ensuring long-term stability even in harsh industrial conditions.
Q: Does the installation of this 26/35kV termination require any specialized heating equipment or hot work permits?
A: Absolutely not. The cold shrink technology utilizes a pre-expanded support tube. Installation simply requires unwinding this inner core, allowing the silicone body to contract naturally. It is a 100% torch-free process, eliminating fire hazards and the need for hot work permits.
Q: Can this termination handle sudden power surges or lightning strikes?
A: Yes, it is highly resilient against sudden overvoltages. For the 26/35kV class, the termination has successfully passed a 200kV impulse voltage test (both positive and negative polarity, 10 times) without any flashover or breakdown, ensuring robust protection for your grid.
Q: Is this termination compatible with both XLPE and EPR insulated multi-core cables?
A: Yes, our cold shrinkable terminations are fully compatible with both XLPE (Cross-linked Polyethylene) and EPR (Ethylene Propylene Rubber) insulated cables, offering excellent versatility for various power distribution designs.
Q: How does the product ensure uniform electrical field distribution?
A: The termination features a precisely engineered, prefabricated stress cone integrated into the main body. This geometric design effectively diffuses the concentrated electrical stress at the edge of the cable's outer semiconductor layer, preventing localized insulation failure.
