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 scenarios
Common 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 fields
Different 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!
