BSMJ0.4-25-3型电力电容器产品介绍（中文版）

BSMJ0.4-25-3是一款三相并联电力电容器，专为0.4kV低压配电系统无功补偿设计。该产品采用全金属化聚丙烯薄膜介质技术，额定容量25kvar，适用于50Hz交流电力环境，可有效提升电网功率因数，优化电能质量，降低线路损耗。

产品采用模块化结构设计，内部集成过压分离保护装置，当电容器单元出现异常时能快速切断故障回路。外壳选用阻燃型工程塑料，具备良好的耐高温和防潮特性，防护等级达到IP20标准。紧凑的立方体外形（典型尺寸245×85×165mm）便于安装于各类配电柜体，支持垂直或水平固定。

在材料工艺方面，金属化薄膜电极通过真空蒸镀技术形成纳米级金属层，既保证导电性能又具备自愈特性。当介质局部发生击穿时，击穿点周围的金属层可在微秒级时间内气化隔离，避免故障扩大。内部元件采用干式结构，杜绝传统电容器漏液风险。特殊设计的散热风道结合铝合金散热片，确保长期运行温度稳定。

该产品适用于工业厂房、商业建筑、新能源电站等场景的配电系统改造，可与电抗器配套使用形成滤波补偿装置。在电动机、变压器、变频器等感性负载场景中，能有效抑制谐波干扰，延长用电设备使用寿命。建议安装环境温度控制在-25℃至+55℃范围，海拔高度不超过2000米，相对湿度≤85%RH。

BSMJ0.4-25-3型电容器具有运行损耗低、温升小、容量衰减慢等特点，常规使用寿命可达10万小时以上。通过优化内部连接结构和接线端子设计，显著降低接触电阻，三相不平衡度控制在±1.5%以内。产品出厂前经过72小时老化测试和局部放电检测，确保批次性能一致性。

BSMJ0.4-25-3 Power Capacitor Product Introduction (English Version)

The BSMJ0.4-25-3 is a three-phase shunt power capacitor specifically designed for reactive power compensation in 0.4kV low-voltage distribution systems. With a rated capacity of 25kvar and compatible with 50Hz AC power networks, this product effectively improves power factor, optimizes power quality, and reduces line losses in electrical grids.

Featuring modular construction, the capacitor integrates over-voltage disconnection protection that rapidly isolates faulty circuits during abnormal operation. The flame-retardant engineering plastic enclosure provides excellent heat resistance and moisture protection (IP20 rating). Its compact cubic design (typical dimensions 245×85×165mm) allows flexible vertical or horizontal installation in various distribution cabinets.

Advanced metallized polypropylene film technology forms the core of this capacitor. The self-healing dielectric layer, created through vacuum metallization, features nanometer-grade conductive coating that vaporizes instantaneously at defect points to prevent fault propagation. Dry-type internal components eliminate liquid leakage risks associated with traditional capacitors. Optimized cooling channels combined with aluminum alloy heat sinks ensure stable thermal performance during continuous operation.

This product is ideal for power system upgrades in industrial plants, commercial buildings, and renewable energy stations. When paired with reactors, it forms harmonic filtering compensation systems. In applications with inductive loads such as motors, transformers, and frequency converters, it effectively suppresses harmonic interference and extends equipment service life. Recommended operating conditions include ambient temperature range of -25℃ to +55℃, altitude below 2000 meters, and relative humidity ≤85%RH.

The BSMJ0.4-25-3 demonstrates low operational losses, minimal temperature rise, and slow capacitance degradation, delivering over 100,000 hours of service life. Enhanced internal connection structures and terminal designs reduce contact resistance, maintaining three-phase imbalance within ±1.5%. Rigorous 72-hour aging tests and partial discharge inspections ensure batch-to-batch consistency before shipment.