2025-03-31
在工業高壓配電系統中，高壓互感器（High Voltage Current Transformer, HV CT）的型號區別主要基于：電壓等級、結構類型、安裝方式、精度等級、絕緣材料等因素。以下是詳細的分類和型號區別說明，供您參考：1. 按電壓等級分類互感器以及應用場景工業高壓配電系統常見的電壓等級包括 10kV、35kV、66kV、110kV、220kV等，不同電壓等級對應不同的互感器型號：- 10kV 高壓互感器（如LZZBJ9-10）：適用于工廠配電、中小型變電站。 - 35kV 高壓互感器（如LZZBW-35）：用于中型工業配電、區域電網。 - 66kV/110kV 高壓互感器（如 LVQB-110）：適用于大型工業用電、發電廠并網。 - 220kV 及以上（如 TYD-220）：主要用于超高壓輸電系統。 2. 按互感器結構類型分類及適用領域（1）干式（環氧樹脂澆注式）-型號示例：LZZB、LZZBJ、AS12 - 特色： l - 無油設計，免維護，防火防爆。 - 適用于 10kV~35kV 配電柜、開關柜。 - 常見于工廠、商業建筑、數據中心 （2）油浸式- 型號示例：JDJ、JDZ、JDZX - 特點： - 采用變壓器油絕緣，散熱性好，適用于 35kV~220kV。 - 多用于 戶外變電站、發電廠。 （3）SF6氣體絕緣（4）- 型號示例：LVQB、GIS-CT - 特點： - 采用 六氟化硫（SF6）絕緣，體積小，適用于 66kV~550kV。 - 主要用于 GIS（氣體絕緣開關設備）。 （5）電子式（光學互感器）（6）型號示例：ROG-CT、EVT - 特點： - 無鐵芯，采用 ：光纖傳感技術，適用于智能電網（數字化變電站）。 - 精度高（0.2S級），抗電磁干擾強。 3. 按精度等級分類及適用領域不同應用場景對精度要求不同，常見等級：- 0.1級 / 0.2級（電能計量，如電表） - 0.5級（一般工業測量） - 1級 / 3級（繼電保護，如短路檢測） - 5P / 10P（保護級，如過流保護） 4. 按絕緣材料分類| 絕緣類型 | 型號示例 | 特點 || 環氧樹脂 | LZZB、AS12 | 防潮、阻燃，適合戶內 || 硅橡膠 | LZZBW | 耐紫外線，適合戶外 || 陶瓷絕緣 | JDZX | 耐高溫，用于特殊環境 || 復合絕緣 | LVQB | SF6+環氧樹脂，用于GIS |5. 工業應用選型指南| 應用場景 | 推薦型號 | 關鍵參數 || 工廠10kV配電 | LZZBJ9-10 | 0.5級，環氧樹脂澆注 || 戶外35kV變電站 | LZZBW-35 | IP65防護，硅橡膠外殼 || 發電廠110kV保護 | LVQB-110 | 5P20級，SF6絕緣 || 智能電網數字化站 | EVT-220 | 電子式，0.2S級 |6. 如何選擇合適的型號？1. 確定電壓等級（10kV/35kV/110kV）。 2. 選擇結構類型干式/油浸/SF6）。 3. 明確用途（計量/保護）。 4. 考慮安裝方式（貫穿式/支柱式）。 5. 核對精度要求（0.2級/0.5級/5P級）。 客戶需要說明應用場景，額定電壓等級、負載、變比、保護等級、容量大小等參數以便于我們進一步推薦匹配的型號！In industrial high-voltage power distribution systems, the models of high-voltage current transformers (HV CT) are mainly based on factors such as voltage level, structure type, installation method, accuracy level, and insulation material. The following is a detailed description of the classification and model differences for your reference:1. Classification of transformers by voltage level and application scenariosCommon voltage levels of industrial high-voltage power distribution systems include 10kV, 35kV, 66kV, 110kV, 220kV, etc. Different voltage levels correspond to different transformer models:- 10kV high voltage transformer (such as LZZBJ9-10): suitable for factory power distribution, small and medium-sized substations.- 35kV high voltage transformer (such as LZZBW-35): used for medium-sized industrial power distribution and regional power grids.- 66kV/110kV high voltage transformer (such as LVQB-110): suitable for large industrial electricity and power plant grid connection.- 220kV and above (such as TYD-220): Mainly used in ultra-high voltage transmission systems.2. Classification by transformer structure type and applicable fields(1) Dry type (epoxy resin casting type)-Model examples: LZZB, LZZBJ, AS12- feature:l - Oil-free design, maintenance-free, fire-proof and explosion-proof.- Suitable for 10kV~35kV distribution cabinets and switch cabinets.- Commonly found in factories, commercial buildings, data centers(2) Oil-immersed- Model examples: JDJ, JDZ, JDZX- Features:- Adopt transformer oil insulation, good heat dissipation, suitable for 35kV~220kV.- Mostly used in outdoor substations and power plants.(3) SF6 gas insulation(4) - Model examples: LVQB, GIS-CT- Features:- Using sulfur hexafluoride (SF6) insulation, small size, suitable for 66kV~550kV.- Mainly used in GIS (Gas Insulated Switchgear).(5) Electronic type (optical mutual inductor)(6) Model examples: ROG-CT, EVT- Features:- Coreless, using: fiber optic sensing technology, suitable for smart grid (digital substation).- High precision (0.2S level), strong resistance to electromagnetic interference.3. Classification by accuracy level and applicable fieldsDifferent application scenarios have different requirements for accuracy. Common levels are:- Class 0.1/Class 0.2 (Energy measurement, such as electric meters)- Class 0.5 (general industrial measurement)- Class 1 / Class 3 (Relay protection, such as short circuit detection)- 5P / 10P (protection level, such as overcurrent protection)4. Classification by insulation material| Insulation Type| Model Example| Features|| Epoxy resin | LZZB, AS12 | Moisture-proof, flame-retardant, suitable for indoor use || Silicone rubber | LZZBW | UV resistant, suitable for outdoor use || Ceramic insulation | JDZX | High temperature resistance, used in special environments || Composite insulation | LVQB | SF6+epoxy resin, for GIS |5. Industrial Application Selection Guide| Application scenarios| Recommended models| Key parameters|| Factory 10kV power distribution | LZZBJ9-10 | 0.5 grade, epoxy resin casting || Outdoor 35kV substation | LZZBW-35 | IP65 protection, silicone rubber housing || Power plant 110kV protection | LVQB-110 | 5P20 grade, SF6 insulation || Smart Grid Digital Station | EVT-220 | Electronic, 0.2S Class |6. How to choose the right model?1. Determine the voltage level (10kV/35kV/110kV).2. Select the structure type (dry type/oil immersed/SF6).3. Clarify the purpose (measurement/protection).4. Consider the installation method (through-type/pillar-type).5. Check accuracy requirements (0.2 level/0.5 level/5P level).Customers need to explain the application scenario, rated voltage level, load, transformation ratio, protection level, capacity and other parameters so that we can further recommend matching models!
