Products Description
The HVDC Contactor High Purity Ceramics Shell For Relay serves as the core structural component that integrates the tripartite functions of insulation, conductivity, and hermetic sealing. By seamlessly integrating the superior insulating properties of high-purity ceramics, the excellent conductivity of oxygen-free copper, and the reliable sealing capabilities of special alloy steels at a microscopic level, this product effectively resolves critical issues-such as dielectric breakdown, gas leakage, contact welding, and creepage failure-that frequently plague traditional plastic-shelled or non-metallized ceramic components operating under conditions of high-voltage DC, high current, and frequent switching cycles. Comprising a brazed assembly of 95% alumina metallized ceramics, T2Y2 oxygen-free copper stationary contacts, and alloy steel gaskets, this material configuration represents an engineered solution specifically designed to meet the stringent requirements for high reliability and extended service life mandated by automotive-grade (AEC-Q) standards.
Structural Advantages
Unrivaled DC Withstand Voltage and Arc Resistance
High-purity Alumina ceramic parts precision machining exhibit superior resistance to electrical tracking and corona discharge under high DC voltages compared to organic insulating materials. They can withstand the erosive effects of high-temperature plasma generated during DC arcing without carbonizing or forming conductive pathways, thereby ensuring that insulation performance remains undegraded following short-circuit interruption.
Exceptional Airtightness and Environmental Barrier Properties
The sealing interfaces formed through active metal brazing technology achieve a quasi-metallurgical bond, guaranteeing a helium leak rate better than 1x10⁻⁹ Pa·m³/s even under severe thermal cycling conditions. This fundamentally eliminates the degradation of internal insulation for Metallized Alumina Ceramics for Electrical Components, contact oxidation, and attenuation of arc-extinguishing performance caused by the ingress of external moisture and oxygen.
Superior Thermo-Mechanical Reliability
Through an optimized gradient design of thermal expansion coefficients across the Metalized Ceramic Insulating Tubes Metalizating Ceramic Part, metallization layer, copper contacts, and alloy steel gaskets, the assembly minimizes interfacial stress under the thermal shock and electromagnetic repulsion forces generated by repeated switching operations. This results in excellent thermal shock resistance, fully meeting the vibration and thermal cycling lifetime requirements of the automotive sector.
Product Advantages
Ensuring Ultimate Safety for High-Voltage Systems
Metallized Ceramic Housing for Power Semiconductors' top-tier insulation and sealing capabilities serve as the final, robust physical barrier against ground faults, arc-induced fires, and insulation failures within high-voltage systems.
Enabling Extended Lifespan and Maintenance-Free Operation for Contactors
The inert nature of the Metalized Ceramics for Electrical Components material, combined with the high reliability of its sealing, ensures that the contactor remains free from concerns regarding insulation aging, gas leakage, or seal failure throughout its entire lifecycle-thereby significantly reducing maintenance requirements and total lifecycle costs.
Supporting Higher Power Density and Operating Frequencies
High-Strength Metallized Ceramic Components' exceptional heat dissipation capabilities and arc-resistance allow for more compact contactor designs, while also enabling the device to accommodate more frequent switching operations (such as those found in V2G applications).
Material Advantages
| High-Purity Ceramic Selection | Utilizes 95% alumina-silica ceramic for Alumina ceramic parts precision machining (95-grade porcelain) with a purity level of ≥95%. Compared to standard ceramics, this material offers a performance improvement of over 20% in both insulation and high-temperature resistance, making it suitable for more demanding high-voltage operating conditions. |
| Optimized Contact Material | Employs T2Y2 oxygen-free copper for the stationary contacts, featuring a copper content of ≥99.95%. Compared to standard copper contacts, this material demonstrates a 5% increase in electrical conductivity, a 30% reduction in contact resistance, and significantly enhanced resistance to arc erosion for Metallized Alumina Ceramics for Electrical Components. |
| Tailored Gasket Material | Features Cr18Ni9 stainless steel gaskets, which offer excellent brazing compatibility with both the ceramic and oxygen-free copper components, while simultaneously providing superior corrosion resistance-making them ideally suited for use in humid and corrosive environments for Metalized Ceramics for Electrical Components. |
contact us
If you require detailed technical specifications or customized solutions for the HVDC Contactor High Purity Ceramics Shell for Relays-or if you need engineering consultation regarding product selection or manufacturing processes-please feel free to contact us. Our professional technical team is ready to provide you with personalized, one-on-one solutions to ensure the smooth and successful advancement of your project.
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