ZN85-40.5/1250A-2000A Aluminum Fixed Contact Bracket Technical Description The ZN85-40.5/1250A-2000A Aluminum Fixed Contact Bracket is a critical component designed for high-voltage switchgear applications, specifically within the 40.5 kV voltage class. Engineered to accommodate rated currents ranging from 1250A to 2000A, this bracket ensures reliable electrical connectivity and mechanical stability in demanding power distribution systems. Material and Construction Constructed from high-grade aluminum alloy, the bracket combines lightweight properties with excellent electrical conductivity and corrosion resistance. Aluminum’s natural oxidation resistance minimizes degradation over time, ensuring long-term performance in harsh environments. The design incorporates precision machining to achieve tight tolerances, ensuring seamless integration with other switchgear components. Key Features 1. High Current Capacity: Optimized for 1250A–2000A load currents, the bracket minimizes resistive losses and overheating through robust material selection and surface finishing. 2. Thermal and Electrical Performance: The aluminum construction dissipates heat efficiently, reducing thermal stress during high-load operations. The contact surfaces are often treated or plated to enhance conductivity and reduce contact resistance. 3. Mechanical Durability: Reinforced structural design withstands electromagnetic forces and mechanical shocks during circuit breaker operations, ensuring alignment and stability under fault conditions (e.g., short-circuit currents up to 31.5 kA or higher, depending on specifications). 4. Compatibility: Designed to fit ZN85-40.5 kV switchgear, the bracket interfaces seamlessly with fixed contacts, isolating switches, or breaker assemblies, maintaining consistent pressure for reliable arcing suppression. Applications This fixed contact bracket is widely used in: - Gas-insulated (GIS) or air-insulated switchgear (AIS) for substations. - Power transmission and distribution networks requiring high-current handling. - Renewable energy systems (e.g., solar/wind farms) where durable, low-maintenance components are essential. Standards and Certifications Complies with international standards such as IEC 62271, GB/T 11022, and ANSI/IEEE criteria for high-voltage equipment, ensuring safety, interoperability, and performance reliability. Installation and Maintenance - Proper alignment during installation is critical to avoid misalignment-induced arcing. - Periodic inspection for wear, oxidation, or loose fasteners is recommended to maintain optimal performance. Conclusion The ZN85-40.5/1250A-2000A Aluminum Fixed Contact Bracket exemplifies advanced engineering for high-voltage applications, balancing electrical efficiency, mechanical resilience, and longevity. Its role in ensuring uninterrupted power flow makes it indispensable in modern electrical infrastructure. (Note: Specifications may vary based on regional standards or custom requirements.)