LV100/SP51;LV 100/SP51

LV100/SP51 High-Precision Closed-Loop Hall-Effect Voltage Transducer

LV100/SP51 Product Overview

The LV100/SP51 is a high-performance closed-loop Hall-effect voltage transducer from LEM, the world-leading brand in electrical measurement. Part of the proven LV100 series, this transducer is specifically designed for industrial voltage measurement applications. It accurately measures DC, AC, and pulsed voltages while providing full electrical isolation between the primary (high-voltage side) and secondary (low-voltage side) circuits, offering safe, stable, and precise voltage monitoring for your equipment.

LV100/SP51 Key Benefits

High Accuracy
Closed-loop Hall-effect technology delivers exceptional measurement accuracy (0.7%–1%), meeting the most stringent requirements for voltage monitoring consistency and precision.

Excellent Linearity & Low Thermal Drift
The transducer maintains excellent output linearity across the entire measurement range with very low temperature sensitivity. This ensures stable and reliable measurement results regardless of ambient temperature changes.

High Immunity to Interference
The closed-loop compensation design provides strong immunity to electromagnetic interference from external sources or other equipment. This guarantees clean, undistorted signal transmission, especially in demanding industrial environments with high EMI.

Flexible Voltage Measurement Range
By simply connecting an appropriate external resistor R1 in series, the measurement range can be configured from 100V to 2500V, easily adapting to applications from low-voltage distribution to high-voltage monitoring.

Safe Isolation
Full electrical isolation between primary and secondary circuits effectively protects downstream control systems and operator safety – an essential feature for high-voltage applications.

Wide Operating Temperature
Stable operation from -40°C to +85°C, suitable for harsh outdoor, industrial, and special vehicle applications.

LV100/SP51 Detailed Specifications

LV100/SP51 Typical Applications

Thanks to its high accuracy, robust isolation, and wide-temperature operation, the LV100/SP51 is widely used in:

AC variable frequency drives and servo motor drives

Static power converters for DC motor drives

Renewable energy (solar PV, wind power systems)

Energy storage systems (battery string voltage monitoring, inverter voltage monitoring)

Industrial automation and control equipment

Traction and rail transportation systems

Power management and uninterruptible power supplies (UPS)

Frequency converters and active power filters

LV100/SP51 Trusted Quality – The LEM Heritage

LEM is the benchmark brand for electrical transducers worldwide. Their products are used in aerospace, aircraft, high-speed trains, electric vehicles, medical devices, and high-end industrial automation. Every LV100/SP51 transducer undergoes rigorous factory testing and burn-in to ensure 100% perfect function and long-term reliability.

Why Choose the LV100/SP51?

In high-voltage power electronics, the accuracy and reliability of voltage measurement directly impact the safety and performance of the entire system. The LV100/SP51 offers not only the high accuracy and fast response of closed-loop Hall-effect technology, but also decades of proven field experience, wide voltage adaptability, and excellent noise immunity – making it a trustworthy choice for industrial and renewable energy applications.