Current Transformer Sensors

Current Transformer (CT) sensors, also known as current transformers or CTs, are devices used for measuring alternating current (AC) in electrical systems. They work on the principle of electromagnetic induction, converting high current levels into a proportional lower current that can be safely handled by measurement instruments.
功能特点
1. 安全隔离：CTs provide electrical isolation between the high-voltage or high-current circuits and the low-voltage measuring equipment, ensuring safe operation.
2. 比例输出：They transform high currents into a standardized lower secondary current, typically 5A or 1A, which is directly proportional to the primary current.
3. 线性输出：The output signal is linear with respect to the input current, allowing accurate measurements.
4. 非侵入式：CTs can be installed around live conductors without interrupting the power flow.
5. 多用途：They are used in various applications such as energy metering, protective relaying, and power quality monitoring.
应用场景
1. 电力系统：在电力传输和分配网络中，用于监测和计量电流。
2. 工业自动化：在工厂自动化系统中，用于监控电机、变压器和其他电气设备的负载。
3. 建筑电气：在楼宇管理系统中，用于能源管理和故障检测。
4. 可再生能源：在太阳能和风能系统中，用于电流检测和系统控制。
5. 家用电器：在智能电表中，用于准确计费。
包含种类
1. 环形CTs：最常见的类型，有一个可以环绕电线的环形主体。
2. 窗口型CTs：设计有开口，电线可以穿过，适合已安装的电缆或导体。
3. 插入式CTs：适用于面板安装，通过插头连接到电路。
4. 套管型CTs：用于高压系统，直接安装在电缆或管道上。
5. 电子式CTs：具有内置电子元件，提供数字化或通讯接口输出。
Current Transformer Sensors play a crucial role in monitoring and controlling electrical systems, providing safe and reliable current measurement data.