产品概述
JLSZVW-10 组合式计量互感器 这是一种户外环氧树脂浇注式电能计量装置，专为 10 千伏三相三线交流电力系统设计，最高系统电压为 12 千伏。
基于双元件计量方案，该单元集成了电压互感器和电流互感器功能，可在单个设备中实现三相电压测量、两相电流采集和电能计量。
它广泛用于10千伏户外配电线路的杆上计量，是三相三线制电力系统的关键计量装置之一。
产品特点
绝缘与电气性能
- Outdoor epoxy resin cast insulation:
The complete unit is vacuum-cast using outdoor-grade epoxy resin. The solid insulation contains no internal air gaps and provides excellent dielectric performance. - Suitable for 12 kV systems:
该装置能够承受 10 kV 系统（最高系统电压为 12 kV）的工作电压、工频耐受电压和雷电冲击耐受电压要求。 - Low partial discharge:
局部放电限制在10皮库库仑（pC）以内，有助于减缓绝缘老化，提高长期运行可靠性。 - Oil-free outdoor construction:
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。适用于暴露在阳光、雨水、潮湿和正常污染下的户外环境。 - 集成式双元件计量装置
该单元专为三相三线制系统设计，集成了两个电流互感器元件和一个电压互感器元件。 - 同步信号采集
它无需额外的外部仪器变压器即可获取三相电压和两相电流信号，用于电能计量、功率计算和负载监测。 - Wide ratio range:
可提供10/0.1千伏的标准电压比，而电流比可根据连接的负载从5/5安培配置到2000/5安培。 - High metering accuracy:
电流互感器精度等级最高可达0.2S，电压互感器精度等级最高可达0.2。根据项目需求，也可提供0.5和1级。 - High pollution-flashover resistance:
高压侧采用多伞裙绝缘结构，具有更长的爬电距离，在潮湿和污染的室外条件下能可靠地抵抗表面闪络。
结构和安装特点
- Fully enclosed outdoor dry-type structure:
整个单元由整体浇注树脂构成，内部无裸露带电部件。 - IP65防护等级
户外围栏提供 IP65 防护等级，有助于防止雨水、灰尘和湿气侵入。 - Compact integrated design:
电压和电流互感器功能集成于一体，减少了安装空间，简化了现场接线，并降低了所需独立组件的数量。 - 油浸式计量装置的替代方案：
干式结构在适用场合可替代传统的油浸式计量箱，同时无需进行油维护。 - Outdoor high-voltage terminals:
The high-voltage side uses copper busbar-type terminals for convenient connection to outdoor distribution conductors. - 镀锡端子表面
高压端子接触面进行镀锡处理，以提高在户外环境中的抗氧化和耐腐蚀性能。 - Waterproof secondary terminal box:
低压端子安装在IP65防水接线盒内，以保护二次回路免受雨水和湿气的侵蚀。 - Clear terminal identification:
高压端子以及二次电压和电流回路均清晰标记并分开分组，以降低接线错误的风险。 - Flexible installation:
该单元支持室外电线杆安装横担和室内 switchgear 安装 - High mechanical stability:
安装结构提供可靠的抗震动和抗风性能，在正确安装的情况下，可承受正常的户外风、雨、雪载荷。
操作与维护特性
- Low-maintenance operation:
干式无油结构消除了漏油、换油和与油相关的火灾风险。 - High mechanical strength:
The outdoor epoxy resin body provides reliable impact resistance, ageing resistance, and corrosion resistance. - Wide operating temperature range:
The unit can operate at ambient temperatures from -40°C to +70°C. The epoxy resin maintains stable insulation and mechanical properties without becoming brittle or deformed. - 适用于户外温度变化
The product can withstand significant day-to-night and seasonal temperature changes. - High operational reliability:
电压和电流互感器组件采用优质磁芯和绕组材料，具有低运行损耗和有限的温升。 - Stable long-term accuracy:
该装置设计用于在长期运行中保持稳定的计量精度，并将误差漂移降至最低。 - Overvoltage withstand capability:
The product can withstand switching and lightning overvoltages within its specified insulation level.
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 |
| Voltage Ratio | 10/0.1 kV, customizable |
| Current Ratio | 5/5 A to 2,000/5 A, customizable |
| Voltage Transformer Accuracy Class | 0.2 / 0.5 / 1 等级 |
| Current Transformer Accuracy Class | 0.2S / 0.5S / 0.5 级 |
| 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 high voltage, low voltage, and earth |
结构和材料参数
| 参数 | 规格 |
|---|---|
| 绝缘介质 | Fully cast outdoor-grade epoxy resin |
| 防护等级 | IP65 |
| Installation Type | Outdoor pole-mounted crossarm installation or indoor switchgear installation |
| 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 1208 | Current Transformers |
| GB/T 17215 | Electricity Metering Equipment |
| DL/T 448 | Technical Administrative Code for Electric Energy Metering |
应用
Applicable Power System
JLSZVW-10组合式计量互感器适用于最高系统电压为12kV的10kV三相三线制交流电力系统。
Typical Applications
- Pole-mounted energy metering on outdoor 10 kV distribution lines
- Energy metering and load monitoring in indoor medium-voltage switchgear
- Box-type substations
- Switching and distribution stations
- 10 kV distribution systems in industrial and mining enterprises
- Commercial buildings and industrial parks
- Energy data acquisition in power automation systems
- Power monitoring, control, and load management systems
主要功能
The combined metering transformer converts the system high voltage and primary current into standardized secondary signals:
- Secondary voltage: 100 V
- Secondary current: 5 A
这些信号可提供给：
- 三相三线电能表
- Metering instruments
- Load-monitoring equipment
- Power data acquisition devices
- Energy management systems
- Power automation equipment
The unit supports:
- 能源计量
- 功率计算
- Load monitoring
- Electrical parameter acquisition
- 能源消耗管理
它还为主电源系统和二次计量电路提供了电气隔离，有助于确保连接的计量设备安全运行。
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
- 户外模型可承受正常的日晒、雨淋、霜冻和风蚀。
- Outdoor pole-mounted crossarm or indoor switchgear installation
- Severe corrosion, salt spray, and heavy sand or dust conditions should be avoided unless a customized version is used
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
- Strong wind or severe sand and dust conditions
- High-intensity ultraviolet exposure
- Non-standard voltage ratios
- Non-standard current ratios
- Special mounting dimensions
安装与维护
安装要求
- Pre-installation inspection:
Inspect the combined metering transformer and confirm that the epoxy resin body is free from cracks, bubbles, mechanical damage, and other visible defects. Check that all terminal markings are clear and that the supplied accessories are complete. Verify that the model, specifications, voltage ratio, current ratio, and metering accuracy classes match the system design requirements. - Mounting:
Select a suitable crossarm and mounting bracket according to the installation arrangement. Secure the metering transformer in the specified position and confirm that there is no looseness, displacement, or uneven mechanical loading. The mounting surface should be level. Outdoor pole-mounted installations must meet the applicable wind-load and anti-overturning requirements. - High-voltage-side connection:
根据系统设计连接高压端子。确保所有连接都已牢固拧紧并提供可靠的电气接触。保持高压导体、接地元件和其他带电部件之间有足够的电气间隙。户外连接必须防止水分侵入和腐蚀。在需要的地方，应在端子接触面上涂抹导电膏，以减少氧化。 - Secondary-side connection:
将电压和电流二次端子按照其标记连接到电能表。一次侧带电时，电流互感器二次侧回路绝不允许开路。电压互感器二次侧回路绝不允许短路。电流二次回路必须按照系统设计和适用的电气安全要求，在一点可靠接地。接线完成后，确保防水二次端子盒正确关闭并密封。 - Insulation inspection:
After installation, measure the insulation resistance between:- High voltage and low voltage
- High voltage and earth
- Low voltage and earth
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, corrosion, and abnormal heating.
- 检查所有户外连接处的防水和防腐蚀保护。
- Confirm that the secondary terminal box remains properly sealed.
- Regularly inspect high-voltage and low-voltage connections for looseness, overheating, and discoloration.
- 确认当前二次回路连接正确且接地可靠。
- 定期校验计量准确度，并将仪表读数与组合式计量变压器的规定误差限值进行比较。
- Periodically test the insulation resistance and confirm that the insulation performance remains within the specified requirements.
- Clean dust and contamination from the product surface.
- Regularly clean the insulating sheds to reduce the risk of pollution flashover.
- Prevent oil and corrosive substances from contacting the epoxy resin body.
- If cracking, electrical discharge, overheating, or excessive metering error is detected, immediately de-energize and inspect the equipment. Replace the unit where necessary.
注意事项
- 变压器二次回路在一次系统带电时绝不能开路。电压互感器二次回路绝不能短路。任何一种情况都可能产生危险的过电压或过电流，对设备和人员造成严重风险。
- 维护期间，二次回路必须在断开前牢固短路接地。工作开始前，电压二次回路必须安全隔离。
- Avoid impact or collision with the epoxy resin body and high-voltage terminals during transportation and installation. Mechanical damage may reduce insulation performance and pollution-flashover resistance.
- Use suitable insulated conductors for high-voltage connections. Maintain adequate electrical clearance from earthed components and other live parts to prevent phase-to-phase or phase-to-earth discharge.
- Confirm the correct phase sequence during three-phase wiring. Incorrect phase connections may affect metering accuracy.
- The equipment must be reliably earthed. The grounding terminal on the base must be securely connected to the grounding busbar.
- Outdoor installations must comply with the applicable lightning protection and earthing requirements.
- Store the product in a dry, ventilated, and shaded environment. Avoid direct sunlight, high temperatures, moisture, compression, and mechanical impact.
- Installation, commissioning, and maintenance must be carried out by qualified electrical personnel in accordance with applicable electrical safety procedures.
- Outdoor connections must be properly protected against rainwater ingress and corrosion.
- The metering transformer must pass verification by the relevant local metrology authority before being put into service where such verification is required.
标准供应清单
| 不。 | 物品 | 功能 |
|---|---|---|
| 1 | JLSZVW-10户外双组合式计量互感器 | 电压和电流变换、电气隔离和电能计量的主设备 |
| 2 | Mounting Brackets, Bolts, and Washers | Used to secure the metering transformer during installation |
| 3 | Secondary Terminal Box and Terminal Cover | Protect the low-voltage terminals against incorrect connection, short circuits, and water ingress |
| 4 | Product Instruction Manual | Provides installation, operation, maintenance, wiring, and outdoor mounting guidance |
| 5 | Product Certificate, Factory Test Report, and Metrological Verification Certificate | Provide product quality and performance documentation, including voltage-ratio, current-ratio, and accuracy test data |
Applicable Standards and Certification
The product complies with the following standards:
- GB 1207, Voltage Transformers
- GB 1208, Current Transformers
- GB/T 17215, Electricity Metering Equipment
- DL/T 448, Technical Administrative Code for Electric Energy Metering
该产品已通过适用的型式试验和计量检定，其性能满足10千伏三相三线制电力系统的电能计量要求。
