在工業(yè)高壓配電系統(tǒng)中，高壓互感器（High Voltage Current Transformer, HV CT）的型號(hào)區(qū)別主要基于：電壓等級(jí)、結(jié)構(gòu)類型、安裝方式、精度等級(jí)、絕緣材料等因素。以下是詳細(xì)的分類和型號(hào)區(qū)別說(shuō)明，供您參考：
1. 按電壓等級(jí)分類互感器以及應(yīng)用場(chǎng)景
工業(yè)高壓配電系統(tǒng)常見(jiàn)的電壓等級(jí)包括 10kV、35kV、66kV、110kV、220kV等，不同電壓等級(jí)對(duì)應(yīng)不同的互感器型號(hào)：
- 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(yè)配電、區(qū)域電網(wǎng)。
- 66kV/110kV 高壓互感器（如 LVQB-110）：適用于大型工業(yè)用電、發(fā)電廠并網(wǎng)。
- 220kV 及以上（如 TYD-220）：主要用于超高壓輸電系統(tǒng)。
2. 按互感器結(jié)構(gòu)類型分類及適用領(lǐng)域
（1）干式（環(huán)氧樹(shù)脂澆注式）
-型號(hào)示例：LZZB、LZZBJ、AS12
- 特色：
l - 無(wú)油設(shè)計(jì)，免維護(hù)，防火防爆。
- 適用于 10kV~35kV 配電柜、開(kāi)關(guān)柜。
- 常見(jiàn)于工廠、商業(yè)建筑、數(shù)據(jù)中心
（2）油浸式
- 型號(hào)示例：JDJ、JDZ、JDZX
- 特點(diǎn)：
- 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(fā)電廠。
（3）SF6氣體絕緣
（4）- 型號(hào)示例：LVQB、GIS-CT
- 特點(diǎn)：
- 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(kāi)關(guān)設(shè)備）。
（5）電子式（光學(xué)互感器）
（6）型號(hào)示例：ROG-CT、EVT
- 特點(diǎn)：
- 無(wú)鐵芯，采用 ：光纖傳感技術(shù)，適用于智能電網(wǎng)（數(shù)字化變電站）。
- 精度高（0.2S級(jí)），抗電磁干擾強(qiáng)。
3. 按精度等級(jí)分類及適用領(lǐng)域
不同應(yīng)用場(chǎng)景對(duì)精度要求不同，常見(jiàn)等級(jí)：
- 0.1級(jí) / 0.2級(jí)（電能計(jì)量，如電表）
- 0.5級(jí)（一般工業(yè)測(cè)量）
- 1級(jí) / 3級(jí)（繼電保護(hù)，如短路檢測(cè)）
- 5P / 10P（保護(hù)級(jí)，如過(guò)流保護(hù)）
4. 按絕緣材料分類
| 絕緣類型 | 型號(hào)示例 | 特點(diǎn) |
| 環(huán)氧樹(shù)脂 | LZZB、AS12 | 防潮、阻燃，適合戶內(nèi) |
| 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(huán)境 |
| 復(fù)合絕緣 | LVQB | SF6+環(huán)氧樹(shù)脂，用于GIS |
5. 工業(yè)應(yīng)用選型指南
| 應(yīng)用場(chǎng)景 | 推薦型號(hào) | 關(guān)鍵參數(shù) |
| 工廠10kV配電 | LZZBJ9-10 | 0.5級(jí)，環(huán)氧樹(shù)脂澆注 |
| 戶外35kV變電站 | LZZBW-35 | IP65防護(hù)，硅橡膠外殼 |
| 發(fā)電廠110kV保護(hù) | LVQB-110 | 5P20級(jí)，SF6絕緣 |
| 智能電網(wǎng)數(shù)字化站 | EVT-220 | 電子式，0.2S級(jí) |
6. 如何選擇合適的型號(hào)？
1. 確定電壓等級(jí)（10kV/35kV/110kV）。
2. 選擇結(jié)構(gòu)類型干式/油浸/SF6）。
3. 明確用途（計(jì)量/保護(hù)）。
4. 考慮安裝方式（貫穿式/支柱式）。
5. 核對(duì)精度要求（0.2級(jí)/0.5級(jí)/5P級(jí)）。
客戶需要說(shuō)明應(yīng)用場(chǎng)景，額定電壓等級(jí)、負(fù)載、變比、保護(hù)等級(jí)、容量大小等參數(shù)以便于我們進(jìn)一步推薦匹配的型號(hào)！
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!
