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Sourced directly from a premier manufacturer and supplier, the 76/132kV Outdoor Power Cable Termination with Porcelain Bushing is engineered for high-voltage grid stability. Designed for large-scale procurement and infrastructure projects, this termination delivers uncompromising reliability in severe environments.
Voltage Class: Operates flawlessly at 76kV and 132kV thresholds.
Core Material: High-grade alumina porcelain (≥ 85% Al₂O₃) for ultimate dielectric strength.
Application: Ideal for outdoor substations, coastal power plants, and industrial grids.
Lifespan: Engineered for over 50 years of maintenance-free operation.
The 76/132kV Outdoor Power Cable Termination with Porcelain Bushing stands as a definitive solution for securing and managing high-voltage power transmission architectures. When integrating power cables into outdoor substations or overhead lines, the termination point is often the most vulnerable link. This meticulously engineered termination resolves that vulnerability by combining the unyielding rigidity of high-grade alumina porcelain with precision-machined, hot-dip galvanized steel fittings. The smooth, glazed surface of the porcelain feels cool and impenetrable to the touch, offering a physical barrier that actively repels moisture, salt spray, and conductive industrial dust. By utilizing advanced stress control mechanisms at the cable-insulation interface, it masterfully smooths electrical field gradients, virtually eliminating the crackling sound and destructive energy of partial discharge. For procurement managers and grid engineers tasked with upgrading regional electrical infrastructure, this termination translates to uninterrupted power flow, zero catastrophic breakdowns, and a drastic reduction in emergency maintenance dispatches. Whether subjected to the blistering heat of desert installations, the corrosive bite of coastal marine environments, or the relentless vibrations of heavy industrial zones, the structural integrity remains uncompromised. The robust silhouette, featuring precisely spaced sheds, not only presents a visually imposing profile but functionally maximizes creepage distance to prevent pollution flashovers. This is more than a mere connection point; it is a long-term asset that fortifies the entire grid network, ensuring that power delivery remains safe, efficient, and exceptionally reliable for decades.
Parameter | Specification (76kV Class) | Specification (132kV Class) |
|---|---|---|
Rated Voltage (U₀/U) | 44/76 kV | 76/132 kV |
Highest System Voltage (Um) | 80 kV | 145 kV |
Power Frequency Withstand Voltage (Dry) | 185 kV rms | 275 kV rms |
Power Frequency Withstand Voltage (Wet) | 175 kV rms | 260 kV rms |
Lightning Impulse Withstand Voltage (BIL) | 450 kV peak | 650 kV peak |
Partial Discharge Level | ≤ 5 pC @ 1.5U₀ | |
Creepage Distance (Standard) | 1,600 mm | 3,100 mm |
Creepage Distance (Heavy Pollution Class IV) | 2,000 mm | 3,750 mm |
Applicable Cable Cross Section | 240 - 3000 mm² | |
Bushing Material | High-grade alumina porcelain (≥ 85% Al₂O₃) | |
Stress Cone Material | Liquid silicone rubber / EPDM | |
Base Material | Hot-dip galvanized steel | |
Continuous Operating Temperature | -40°C to +70°C | |
Short-circuit Withstand (3 sec) | 31.5 kA | 40 kA |
Cantilever Strength | ≥ 5,000 N | |
Torsional Strength | ≥ 2,000 N·m | |
Wind Resistance | Up to 300 km/h | |
Seismic Withstand | Up to 0.5 g (Richter magnitude 8+) | |
Flange Standard | IEC 60137, ANSI C57.19 | |
Design Service Life | > 50 years | |
Investing in the right infrastructure components dictates the long-term profitability and safety of your grid operations. This termination is engineered with distinct advantages that directly address the most pressing challenges in high-voltage transmission.
Unrivaled Dielectric Rigidity: The dense, inert nature of the alumina porcelain ensures that the termination effortlessly handles severe voltage spikes and continuous high-stress loads without molecular degradation.
Hydrophobic Glaze Technology: The exterior surface is treated with a specialized glaze that forces water to bead and roll off rapidly, carrying away accumulated dirt and preventing the formation of conductive moisture films.
Extreme Mechanical Resilience: Built to endure the brutal forces of nature, the rigid structure withstands hurricane-force winds up to 300 km/h and seismic events up to 0.5 g, keeping your infrastructure intact during catastrophic events.
Zero UV Degradation: Unlike polymer alternatives that chalk and crack under relentless sun exposure, this porcelain housing remains structurally and visually pristine after decades of intense solar radiation.
Optimized Thermal Dissipation: The material composition allows for rapid heat transfer away from the inner conductor, maintaining safe operating temperatures even during peak load periods and preventing thermal runaway.
To guarantee absolute reliability in critical infrastructure, every aspect of this termination has been optimized across seven core engineering dimensions. This multidimensional approach ensures seamless integration and flawless operation.
Crafted from high-strength inorganic electrical porcelain (≥85% alumina) and paired with an imported liquid silicone rubber stress cone. The integration of hot-dip galvanized flanges and a multi-tier sealing architecture guarantees exceptional mechanical strength while completely eradicating the risks of water ingress or oil leakage during operation.
Delivers outstanding dielectric strength and superior electrical field homogenization. Partial discharge is strictly suppressed to an ultra-low level of ≤ 5 pC. With massive safety margins for power frequency withstand and lightning impulse voltages, it ensures the unshakeable stability of high-voltage power grids.
Purpose-built for the most unforgiving outdoor environments. The glazed surface provides excellent hydrophobicity and self-cleaning properties. Extended creepage distances, coupled with optional anti-pollution coatings, make it perfectly adapted for heavy pollution zones, including coastal salt sprays, chemical acid rain, and high-dust desert regions.
Every single unit undergoes a punishing battery of factory tests before dispatch. This includes partial discharge measurement, power frequency withstand, lightning impulse, thermal cycling, and stringent vacuum leak tests, ensuring a 100% pass rate and unwavering reliability under extreme conditions.
Engineered to align seamlessly with the highest global benchmarks. It fully complies with mainstream international standards such as IEC 60137, IEC 60840, IEEE 48, and ANSI. This comprehensive certification fulfills the strict grid access permits and engineering acceptance criteria required by large-scale procurement entities worldwide.
Features a standardized flange interface design that drastically reduces on-site labor. It is broadly compatible with both XLPE and oil-filled cables, allowing for rapid, seamless integration with core substation equipment, including GIS, power transformers, switchgear, and lightning arresters.
The porcelain bushing boasts supreme chemical stability. It is entirely immune to UV aging and surface tracking erosion. Offering a staggering service life exceeding 50 years, its cleaning intervals are significantly longer than those of composite materials, drastically slashing the total lifecycle operational costs.
Selecting a supplier for high-voltage accessories is a critical decision that impacts the safety and efficiency of entire regional grids. As a dedicated manufacturer, we provide more than just hardware; we deliver engineered certainty.
Direct Manufacturer Accountability: By sourcing directly from our advanced production facilities, you bypass intermediaries, ensuring transparent communication, rapid technical support, and highly competitive volume pricing.
Uncompromising Traceability: Every termination is serialized and backed by comprehensive documentation, from raw alumina powder sourcing to final high-voltage laboratory test reports.
Custom Engineering Capability: Our in-house engineering team can adapt flange dimensions, creepage profiles, and stress cone configurations to meet the exact specifications of your unique substation architecture.
Global Logistics Expertise: We utilize heavy-duty, seaworthy packaging with moisture indicators and shock-absorbent materials, ensuring your critical assets arrive at the project site in pristine condition, anywhere in the world.
Dedicated Post-Installation Support: We provide detailed installation manuals, torque specifications, and remote engineering consultations to ensure your field technicians execute a flawless setup.
While composite materials offer flexibility, our porcelain terminations are engineered with heavy-duty, shock-absorbing hot-dip galvanized flanges and specialized dampening gaskets. This structural design allows the unit to withstand horizontal accelerations up to 0.5 g (equivalent to a Richter magnitude 8+ earthquake) without transferring destructive stress to the porcelain body, ensuring rigid stability during seismic events.
The highly polished, glazed surface of the alumina porcelain naturally resists the adhesion of contaminants. In heavy industrial or coastal areas (Class IV), we recommend a routine visual inspection annually and high-pressure water washing every 5 to 7 years. This interval is significantly longer than the 1-to-2-year cleaning cycles typically required for polymeric bushings, vastly reducing your maintenance overhead.
Yes. While primarily utilized for modern XLPE dry cables, our termination is fully adaptable for legacy oil-filled systems. We provide specialized oil barrier seals and precise oil drain fittings to ensure a hermetic seal, allowing you to upgrade aging substation infrastructure without replacing the entire existing cable network.
The exceptionally low partial discharge is achieved through the integration of a precision-molded liquid silicone rubber (or EPDM) stress cone. This semi-conductive component is precisely positioned at the cable insulation shield cut-off. It geometrically equalizes the electric field lines, eliminating high-stress concentration points that cause corona and partial discharge, thereby preserving the integrity of the cable insulation.
Absolutely. The base flanges are manufactured in strict accordance with IEC 60137 and ANSI C57.19 standards. This standardized interface ensures rapid, bolt-on compatibility with a wide array of global substation equipment, including Gas-Insulated Switchgear (GIS), power transformers, and busbar disconnect switches, eliminating the need for custom adapter plates.
