Alstom UT129C-1 is a high-precision voltage transformer (VT, also known as potential transformer, PT) developed by Alstom for medium and high-voltage power systems, widely applied in power plants, 

substations, and high-voltage distribution lines. Its core function is to convert high voltage in the power grid (typically ranging from 10kV to 110kV) into a standardized low voltage (e.g., 100V or 57.7V) that is safe for measurement, protection,

 and control devices—enabling accurate voltage monitoring, energy metering, and reliable operation of relay protection systems.

The transformer features a compact and robust design, with advanced insulation materials (such as epoxy resin casting) that provide excellent dielectric strength, resisting partial discharge and electrical breakdown even in harsh environments with high humidity, dust, 

or temperature fluctuations. It complies with international standards such as IEC 60044-2 (for voltage transformers), 

ensuring high measurement accuracy (typically Class 0.5 or better for metering applications and Class 3 for protection applications) and low phase shift, which is critical for the accuracy of grid control and fault detection.

Alstom UT129C-1 is designed for both indoor and outdoor installation (depending on configuration), with corrosion-resistant housing materials that extend its service life in outdoor power facilities. Additionally,

 it incorporates thermal stability optimization, preventing overheating under long-term rated load operation, and supports compatibility with various secondary equipment (e.g., meters, relays, SCADA systems) via standardized low-voltage output terminals. 

As a key component of Alstom’s power system solutions, it plays a vital role in enhancing grid stability, ensuring safe power transmission, and enabling efficient energy management.

中文产品描述

Alstom UT129C-1 是阿尔斯通为中高压电力系统研发的高精度电压互感器（VT，又称仪用变压器），广泛应用于发电站、变电站及高压配电线路中。

其核心功能是将电网中的高电压（通常为 10kV 至 110kV）转换为安全的标准化低电压（如 100V 或 57.7V），为后续的测量、保护与控制设备提供适配信号，进而实现电网电压的精准监测、电能计量及继电保护系统的可靠运行。

该电压互感器采用紧凑且坚固的结构设计，选用环氧树脂浇注等先进绝缘材料，具备优异的介损性能与绝缘强度，即便在高湿度、多粉尘或温度波动剧烈的恶劣环境中，也能有效抵御局部放电与电气击穿风险，保障设备稳定运行。

产品符合 IEC 60044-2（电压互感器国际标准），测量精度等级高（计量场景通常达 0.5 级及以上，保护场景达 3 级），且相位偏移小 —— 这对确保电网控制指令的准确性与故障检测的及时性至关重要。

Alstom UT129C-1 支持室内外两种安装场景（依具体配置而定），外壳采用耐腐蚀材质，可延长户外电力设施中的设备使用寿命；

同时融入热稳定性优化设计，避免长期额定负载运行下的过热问题，并通过标准化低压输出端子，兼容电表、继电器、SCADA（ Supervisory Control and Data Acquisition，数据采集与监控系统）等各类二次设备。

作为阿尔斯通电力系统解决方案的核心组件，它在提升电网稳定性、保障电力安全传输及实现高效能源管理中发挥着关键作用。