Gwọ́n Nkàsị́ Mkpụrụ́ Íké Specialized site nke Ekwupụta Nri Ọ̀fọ̀ Fọ̀rọ̀: Nke à Maka Ọ̀nọ̀dụ̀ Nke Ọ̀nọ̀dụ̀ EMI Tụtụ Anya

IEE-Business Solution na Voltage Transformer na High-Speed Railway AT Power Supply System: Focus na Strong EMI Immunity​

Na electromagnetic environment na high-speed railway AT (Auto-Transformer) power supply system da ke cikakki. Na strong electromagnetic interference (EMI) yana zama tushen rawa na measurement accuracy na voltage transformers da kuma system reliability. Wannan solution ya shirya wannan core challenge ta hanyar ƙofa voltage transformer mai suna da 27.5kV single-phase power supply standard, wanda ya ba foundation daidai don energy metering da kuma relay protection a cikin high-speed railways.

​Core Technological Breakthrough: Triple Defense Against EMI Storms​

1. ​μ-Metal Alloy Triple Electromagnetic Shield:​​
• ​Structure:​​ Yana amfani da uku independent inner, middle, da outer shielding shells da aka ƙirƙira daga high-permeability μ-metal alloy.
• ​Efficacy:​​ Yana amfani da ita don absorb/block low-frequency strong magnetic field interference da aka yi daga 27.5kV overhead contact line da kuma high-frequency transient EMI da aka yi daga system switching operations. Na core sensing element an amfani da ita don ensure signal purity.
2. ​27.5kV Dedicated Single-Phase Structural Design:​​
• ​Precise Matching:​​ Na magnetic circuit da windings suka yi deep optimization don 27.5kV power-frequency single-phase characteristics, wanda ya sa phase-to-phase crosstalk effects da kuma ya ci absolute accuracy na single-point measurement.
• ​Stability:​​ Na special materials da processes suka ci gaba sosai na core saturation risk, wanda ya ba transient response speed da kuma waveform reproduction capability.
3. ​Vibration Resistance Enhancement (5-200Hz, 2g Acceleration):​​
• ​Simulation-Driven:​​ Yana amfani da FEA (Finite Element Analysis) don simulate complex vibration spectra a trackside locations (including characteristic vibrations induced by passing CRH trains).
• ​Reinforcement Solution:​​ Na internal core components suka ƙirƙira daga elastic silicone potting. Na external housing yana amfani da high-strength alloy da anti-vibration structural elements, wanda ya ba zero connection loosening/displacement a kan long-term mechanical impact don consistent accuracy.
4. ​CRH Standard Communication Interfaces (RJ45 + TNC):​​
• ​Dual Assurance:​​ Na RJ45 interface ta ba standardized digital communication based on mature Ethernet physical layer. Na redundantly designed TNC interface (coaxial connector) ta ba highly reliable transmission of critical analog/digital signals a kan extreme interference.
• ​Immunity Capability:​​ Na interface circuits suka fito built-in multi-layer EMC protection (TVS, filtering). Na ports suka fito IEC 61000-4 series standards for surge and EFT immunity.

​Key Performance Indicators: Hardware Commitment to Accuracy & Reliability​

​Environmental Resilience: The Robust Guardian at Trackside​

• ​Protection Class:​​ IP65 - Comprehensive protection against dust ingress and high-pressure water jets, impervious to rain, snow, wind, and sand.
• ​Operating Temperature:​​ -40℃ ~ +70℃ - Wide-temperature materials and special processes selected to withstand extreme seasonal climate challenges across all regions of China, ensuring consistent performance.
• ​Installation:​​ Designed for trackside pole or compact substation environments, featuring a compact structure for easy installation and maintenance.