在工业高压配电系统中，高压互感器（High Voltage Current Transformer, HV CT）的型号区别主要基于：电压等级、结构类型、安装方式、精度等级、绝缘材料等因素。以下是详细的分类和型号区别说明，供您参考：
1. 按电压等级分类互感器以及应用场景
工业高压配电系统常见的电压等级包括 10kV、35kV、66kV、110kV、220kV等，不同电压等级对应不同的互感器型号：
- 10kV 高压互感器（如LZZBJ9-10）：适用于工厂配电、中小型变电站。
- 35kV 高压互感器（如LZZBW-35）：用于中型工业配电、区域电网。
- 66kV/110kV 高压互感器（如 LVQB-110）：适用于大型工业用电、发电厂并网。
- 220kV 及以上（如 TYD-220）：主要用于超高压输电系统。
2. 按互感器结构类型分类及适用领域
（1）干式（环氧树脂浇注式）
-型号示例：LZZB、LZZBJ、AS12
- 特色：
l - 无油设计，免维护，防火防爆。
- 适用于 10kV~35kV 配电柜、开关柜。
- 常见于工厂、商业建筑、数据中心
（2）油浸式
- 型号示例：JDJ、JDZ、JDZX
- 特点：
- 采用变压器油绝缘，散热性好，适用于 35kV~220kV。
- 多用于 户外变电站、发电厂。
（3）SF6气体绝缘
（4）- 型号示例：LVQB、GIS-CT
- 特点：
- 采用 六氟化硫（SF6）绝缘，体积小，适用于 66kV~550kV。
- 主要用于 GIS（气体绝缘开关设备）。
（5）电子式（光学互感器）
（6）型号示例：ROG-CT、EVT
- 特点：
- 无铁芯，采用 ：光纤传感技术，适用于智能电网（数字化变电站）。
- 精度高（0.2S级），抗电磁干扰强。
3. 按精度等级分类及适用领域
不同应用场景对精度要求不同，常见等级：
- 0.1级 / 0.2级（电能计量，如电表）
- 0.5级（一般工业测量）
- 1级 / 3级（继电保护，如短路检测）
- 5P / 10P（保护级，如过流保护）
4. 按绝缘材料分类
| 绝缘类型 | 型号示例 | 特点 |
| 环氧树脂 | LZZB、AS12 | 防潮、阻燃，适合户内 |
| 硅橡胶 | LZZBW | 耐紫外线，适合户外 |
| 陶瓷绝缘 | JDZX | 耐高温，用于特殊环境 |
| 复合绝缘 | LVQB | SF6+环氧树脂，用于GIS |
5. 工业应用选型指南
| 应用场景 | 推荐型号 | 关键参数 |
| 工厂10kV配电 | LZZBJ9-10 | 0.5级，环氧树脂浇注 |
| 户外35kV变电站 | LZZBW-35 | IP65防护，硅橡胶外壳 |
| 发电厂110kV保护 | LVQB-110 | 5P20级，SF6绝缘 |
| 智能电网数字化站 | EVT-220 | 电子式，0.2S级 |
6. 如何选择合适的型号？
1. 确定电压等级（10kV/35kV/110kV）。
2. 选择结构类型干式/油浸/SF6）。
3. 明确用途（计量/保护）。
4. 考虑安装方式（贯穿式/支柱式）。
5. 核对精度要求（0.2级/0.5级/5P级）。
客户需要说明应用场景，额定电压等级、负载、变比、保护等级、容量大小等参数以便于我们进一步推荐匹配的型号！
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!
