500kV Serye sa Porcelain-Housed Metal Oxide Surge Arresters

Deskripsyon 

Ang 500kV Series Porcelain-Housed Metal Oxide Surge Arresters mao ang mga kritikal nga mga protective devices nga gidesign alang sa ultra-high voltage (UHV) power systems, partikular sa 500kV transmission lines, substations, ug associated equipment (e.g., transformers, circuit breakers). Ang ilang core function mao ang limitahan ang transient overvoltages gikan sa lightning strikes, switching operations, o faults, pagdivert og excessive surge currents ngadto sa ground habang nagmaintain og stable voltage levels during normal operation. Encased sa high-strength porcelain housings, sila nagcombine og robust mechanical protection uban sa advanced metal oxide varistor (MOV) technology, ensuring reliable defense for 500kV grid infrastructure against electrical surges nga mahimong makasira sa equipment o maputli ang power.

Features 

• Superior Surge Handling Capacity: Equipped with multi-layer metal oxide varistors (MOVs) with high non-linear resistance characteristics. Sila mahimo molihok og extreme surge currents (up to several hundred kA) gikan sa lightning or switching events, rapidly clamping overvoltages to safe levels.

• Durable Porcelain Housing: Ang outer porcelain enclosure mao ang weather-resistant, corrosion-proof, ug mechanically strong, designed to withstand harsh environmental conditions (e.g., high humidity, pollution, extreme temperatures, and seismic activity). Ia nagprovide og insulation ug physical protection for internal MOV components.

• Low Leakage Current: Optimized MOV formulation minimizes leakage current during normal operation (typically <100&mu;A), reducing energy loss ug thermal stress. Kini ensures long-term stability ug extends service life (up to 20+ years).

• Self-Recovery Performance: After diverting a surge, ang arresters quickly return to their high-resistance state, preventing continuous current flow ug avoiding interference with normal grid operation. Kini self-recovery capability eliminates the need for manual resetting.

• Series Configuration Adaptability: Designed for series connection to match the 500kV voltage level, with uniform voltage distribution across units. Integrated grading rings or capacitors ensure balanced electrical stress, enhancing overall system reliability.

• Easy Installation & Maintenance: Lightweight compared to traditional arresters, with standardized mounting flanges for compatibility with 500kV substation structures. Many models include built-in monitoring ports for leakage current or temperature checks, facilitating predictive maintenance.

• Compliance with International Standards: Meets IEC 60099-4, ANSI/IEEE C62.11, ug other global standards for surge arresters, ensuring compatibility with 500kV grids worldwide ug adherence to safety and performance requirements.

Basic parameters