产品概述
JDZW-10 电压互感器 这是一款全封闭干式浇注式环氧树脂绝缘电压互感器，专为户外 10 千伏交流电力系统设计，最高系统电压为 12 千伏。
该产品采用整体环氧树脂浇注绝缘结构，具有优异的抗污闪和耐候性能。其铁芯采用优质叠片硅钢片制成，绕组则采用漆包铜线绕制。
JDZW-10 主要用于户外配电设备、架空配电系统、箱式变电站、户外环网柜等 10kV 电气装置中的电压测量、电能计量、继电保护及绝缘监测。
产品特点
绝缘与电气性能
- Fully enclosed epoxy resin cast insulation:
该变压器采用环氧树脂真空浇注整体绝缘工艺制造。固体绝缘主体内部无气隙，具有优异的介电性能，能够满足12kV系统运行电压、工频耐受电压和雷电冲击耐受电压的要求。 - 无油干式设计
该产品不含绝缘油，消除了漏油、油污染和与油相关的火灾隐患。适用于现代户外无油配电系统。 - 多种电压比
提供10/0.1千伏和10/0.1/0.1千伏等电压比。可同时提供多个二次输出，用于计量、保护和绝缘监测电路。 - Multiple accuracy classes:
可根据应用需求提供0.2、0.5和1的计量精度等级以及3P和6P的保护精度等级。 - 高绝缘性和耐污闪性
高压端子采用多伞裙绝缘结构，增加了爬电距离，提高了在污染和潮湿的室外条件下抵抗表面闪络的能力。 - Low partial discharge:
The advanced casting process limits partial discharge to no more than 10 pC, helping reduce insulation ageing and improve long-term operating reliability.
结构和安装特点
- 全封闭户外结构
磁芯、绕组和带电部件都封装在浇注绝缘体内部。该产品提供 IP34 防护等级，可在暴露的室外环境中使用。 - 防雨防污设计
该外壳设计用于抵抗雨水、污染物和冷凝，同时保持可靠的绝缘性能。 - 紧凑型模块化结构
紧凑的结构适合户外配电设备和电线杆安装。提供水平和垂直安装配置。 - Clearly identified terminals:
高压端子有清晰的标识，而低压端子则由防水接线盒盖保护。这简化了接线，并有助于防止接线错误、短路和进水。 - Flexible installation:
金属安装底座包含用于安全螺栓安装的固定孔。该结构在户外应用中提供可靠的抗振动和抗风载能力。
操作与维护特性
- Low-maintenance operation:
干式无油结构消除了泄漏和与油相关的火灾风险。环氧树脂主体提供高机械强度、抗冲击性、耐老化性和耐候性。 - 户外环境耐久性
该产品可承受紫外线照射、户外温度变化、雨水和正常大气污染。 - Wide operating temperature range:
变压器可在-40°C至+70°C的环境温度下运行。环氧树脂可保持稳定的机械和绝缘性能，不易变脆或变形。 - High-reliability design:
漆包铜绕组和优质叠片硅钢铁芯可实现低运行损耗、有限的温升和稳定的精度。 - Overvoltage withstand capability:
The transformer can withstand switching and lightning overvoltages within its specified insulation level, ensuring stable metering and protection signals.
技术规格
电气参数
| 参数 | 规格 |
|---|---|
| 适用系统电压 | 10 kV AC, Um = 12 kV |
| 额定频率 | 50 赫兹 |
| Rated Primary Voltage | 10千伏 |
| Rated Secondary Voltage | 100 V for metering and protection; 100/3 V for optional insulation monitoring |
| Metering Accuracy Class | 0.2 / 0.5 / 1 等级 |
| Protection Accuracy Class | 3P / 6P |
| 工频耐压 | 42 kV for 1 minute at the high-voltage terminal, without breakdown |
| 雷电冲击耐受电压 | 75 kV peak, without breakdown |
| 局部放电 | ≤10 pC |
| 绝缘电阻 | ≥1,000 MΩ between the high-voltage winding, low-voltage winding, and earth |
结构和材料参数
| 参数 | 规格 |
|---|---|
| 绝缘介质 | Fully cast epoxy resin |
| 防护等级 | IP34 |
| Installation Type | 户外柱式或杆式螺栓安装 |
| 热等级 | Class B, 130°C |
环境参数
| 参数 | 规格 |
|---|---|
| Installation Altitude | ≤2,000 m; high-altitude versions available |
| 工作温度 | -40°C 至 +70°C |
| Storage Temperature | -40°C 至 +85°C |
| 相对湿度 | ≤95%, non-condensing |
适用标准
| Standard | 描述 |
|---|---|
| GB 1207 | Voltage Transformers |
| GB/T 20840.1 | Instrument Transformers—Part 1: General Requirements |
| GB/T 20840.3 | Instrument Transformers—Part 3: Additional Requirements for Inductive Voltage Transformers |
应用
适用电压等级
JDZW-10 型电压互感器适用于 10 kV 交流电力系统，最高系统电压为 12 kV，可用于户外。
Typical Applications
- 户外配电设备中的电压测量、电能计量和继电保护
- 架空电力配电系统
- 箱式变电站的电压监测与绝缘监视
- 户外环网开关站和变电站
- 工业与矿山企业户外10千伏配电系统
- Commercial buildings and industrial parks
- Voltage monitoring, control, and protection signal acquisition in power automation systems
- 污染、潮湿且暴露的户外配电环境，要求高耐候性和防污闪能力。
主要功能
The voltage transformer converts the system high voltage into a standardized secondary voltage, typically 100 V, at a specified ratio.
It supplies voltage signals to:
- Energy meters
- Measuring instruments
- Relay protection devices
- Monitoring equipment
- Control systems
- Insulation monitoring devices
The transformer also provides electrical isolation between the primary and secondary systems, helping protect connected equipment and operating personnel.
When equipped with an auxiliary secondary winding, it can provide a voltage signal for insulation monitoring and system earth-fault detection.
操作条件
正常运行条件
- Installation altitude: no more than 2,000 m
- Ambient temperature: -40°C to +70°C
- Severe or sudden temperature changes should be avoided
- Relative humidity: no more than 95%, non-condensing
- The environment should be free from corrosive gases
- Flammable or explosive substances are not permitted
- Severe vibration and mechanical impact should be avoided
- 产品可承受正常的户外风、雨、湿气和污染。
- 安装地点应通风良好，无积水或长期浸泡。
- 户外柱式或杆式安装
Special Operating Conditions
Customized products are required for:
- Installation altitudes above 2,000 m
- Ambient temperatures outside the range of -40°C to +70°C
- Severe pollution or salt-spray environments
- Chemically corrosive environments
- Applications involving strong vibration or mechanical impact
- Non-standard voltage ratios
- Special accuracy classes
- Non-standard mounting dimensions
安装与维护
安装要求
- Pre-installation inspection:
检查电压互感器，确认浇注体无裂纹、气泡、机械损伤及其他可见缺陷。检查端子标记清晰，附件齐全。核实型号、规格、变比、准确级与系统设计要求相符。确认耐污伞裙结构完整无损。 - Mounting:
将电压互感器放置在指定的安装位置，并通过底座上的安装孔用螺栓固定。确保互感器安装牢固，无松动或移位。安装表面应水平，以避免不均匀的机械应力。户外安装必须采取适当的防水和排水措施。电线杆安装必须牢固固定，以防止风力或振动引起的移动。 - High-voltage-side connection:
按照系统设计连接高压端子。确保连接牢固，提供可靠的电气接触。在高压导体、接地部件和其他带电部件之间保持足够的电气间隙。使用合适的防水绝缘导线，并密封室外连接以防止水分侵入。 - Low-voltage-side connection:
根据标记连接二次侧端子。计量、保护和绝缘监测电路必须分开正确接线。二次回路运行时不得短路。二次回路的一点必须根据系统设计和适用的电气安全要求可靠接地。低压端子必须妥善保护并密封防潮。 - Insulation inspection:
After installation, measure the insulation resistance between:- 高压绕组和低压绕组
- 高压绕组和接地
- 低压绕组和接地
维护要求
- Regularly inspect the epoxy resin body for cracks, mechanical damage, discharge marks, and contamination.
- Check the high-voltage terminals for looseness, oxidation, or abnormal heating.
- 检查绝缘棚是否有积尘和污染物。
- 请特别注意防污结构和密封状况。
- 定期检查高压和低压线路，确保所有连接牢固，没有过热或变色的迹象。
- 检查低压接线端子盖和防水密封件是否完好无损。
- Confirm that the secondary-circuit grounding remains reliable.
- Periodically test the insulation resistance and voltage ratio to verify that the metering and protection accuracy remain within the specified limits.
- Check the insulation-monitoring function where an auxiliary winding is provided.
- 定期清洁变压器表面和绝缘子上的灰尘和污垢，以降低污闪风险。
- Prevent oil and corrosive substances from contacting the epoxy resin body.
- If cracking, discharge, overheating, or excessive voltage-ratio error is detected, immediately de-energize and inspect the equipment. Replace the transformer where necessary.
注意事项
- The secondary winding must not be short-circuited while the transformer is energized. A secondary short circuit may produce excessive current and create a serious risk to equipment and personnel. During maintenance, the transformer must be de-energized, and the secondary circuit must be safely isolated and grounded in accordance with applicable procedures.
- Avoid impact or collision with the epoxy resin body, high-voltage terminals, and insulating sheds during transportation and installation. Mechanical damage may reduce insulation performance and pollution-flashover resistance.
- 使用合适的绝缘导体进行高压连接。与接地部件和其他带电部件保持足够的电气间隙，以防止相间或对地放电。
- 户外连接处必须妥善密封，以防止雨水和湿气侵入。
- 设备必须可靠接地。金属底座上的接地端子必须牢固连接到接地线。 busbar.
- 请将产品存放在干燥、通风、阴凉的环境中。避免阳光直射、高温、潮湿、挤压和机械冲击。长期储存需要适当的防潮和防腐蚀措施。
- Installation, commissioning, and maintenance must be carried out by qualified electrical personnel in accordance with applicable electrical safety procedures.
标准供应清单
| 不。 | 物品 | 功能 |
|---|---|---|
| 1 | JDZW-10 电压互感器 | Main device for voltage transformation, electrical isolation, and signal acquisition |
| 2 | 安装螺栓和垫圈 | Used to secure the voltage transformer during installation |
| 3 | 防水低压接线盒 | 防止二次接线端子接错、短路和进水。 |
| 4 | Product Instruction Manual | 提供安装、操作、维护和户外安装指南 |
| 5 | Product Certificate and Factory Test Report | Provides product quality and performance documentation, including voltage-ratio and accuracy test data |
Applicable Standards and Certification
The product complies with the following standards:
- GB 1207, Voltage Transformers
- GB/T 20840.1, Instrument Transformers—Part 1: General Requirements
- GB/T 20840.3, Instrument Transformers—Part 3: Additional Requirements for Inductive Voltage Transformers
该产品已通过适用型式试验，其性能满足户外10千伏电力系统的运行要求。
