LEM LC100S/SP7 Hall Effect Current Sensor
The LEM LC100S/SP7 is a high-precision Hall Effect current sensor engineered for industrial automation, energy management, and power conversion applications. This advanced current transducer is designed to provide accurate and reliable measurement of both AC and DC currents in demanding industrial environments. The LC100S/SP7 is a critical component for any system requiring precise current monitoring, ensuring optimal performance and safety across a broad range of electrical applications.
Technical Specifications
The LEM LC100S/SP7 offers an impressive accuracy grade of ±0.2% of reading at 25°C, with linearity of ±0.1%, ensuring minimal error margins for precision-critical applications. The measurement range extends up to 100 Amperes RMS, accommodating a wide spectrum of industrial requirements. The sensor provides a standard 4-20mA analog output signal, ensuring compatibility with various industrial control systems and enabling seamless integration into existing installations. The response time is less than 1 millisecond, providing rapid feedback and enabling real-time monitoring and control of changing electrical conditions.
Design and Construction
Built to withstand harsh industrial environments, the LEM LC100S/SP7 operates reliably across a wide temperature range from -40°C to +85°C. The sensor features an IP65 or IP67 protection rating, ensuring durability and reliable operation in both indoor and outdoor installations. The compact size, with dimensions as small as 22.2mm x 22.2mm x 14.5mm and weight of approximately 50 grams, makes it easy to install and integrate into existing systems without requiring significant space or structural modifications.
Hall Effect Technology
The LC100S/SP7 utilizes Hall Effect sensor technology to achieve high accuracy and reliability in current measurement. This technology provides galvanic isolation between the primary current being measured and the output signal, with an isolation voltage rating of 2.5 kV. This isolation ensures safety and protects downstream control systems from electrical surges or faults. The sensor offers high common-mode rejection exceeding 100 dB, minimizing interference from external electrical noise and ensuring clean, accurate measurement signals even in electrically noisy industrial environments.
Power Requirements and Output
The LEM LC100S/SP7 operates on a wide supply voltage range of 12-24V DC, providing flexibility for integration into various power architectures. The 4-20mA output signal is an industry standard for analog current transmission, offering immunity to voltage drops over long cable runs and providing a live-zero indication for easy fault detection. This output format simplifies wiring and reduces the number of conductors required compared to voltage-based signals, making the LC100S/SP7 an economical choice for distributed monitoring applications.
Applications
The LEM LC100S/SP7 is suitable for a diverse range of industrial applications. In motor control systems, it monitors current draw to detect overload conditions and optimize energy efficiency. In power distribution systems, it provides accurate load monitoring for demand management and fault detection. The sensor is also used in battery charging control, renewable energy systems, automotive testing, and industrial process control. Additional applications include overload protection, current monitoring for performance management, and fault diagnosis in electrical systems across the metallurgical, chemical, environmental protection, rail transportation, marine, and aerospace industries.
