LV100-1000/SP25;LV 100-1000/SP25

Product Details: LV100-1000/SP25 – LEM High-Precision Closed-Loop Hall Effect Voltage Transducer

LV100-1000/SP25 Product Overview

The LV100-1000/SP25, from the Swiss company LEM (LEM Group), is a high-precision closed-loop Hall effect voltage transducer belonging to the LV100 series. Designed for high-voltage measurement requirements in power electronics, this model accurately measures DC, AC, and pulsed voltage signals while providing complete electrical isolation between the primary circuit and the secondary circuit. Whether used in motor drives, inverters, or complex renewable energy systems, this transducer delivers stable and reliable monitoring for your equipment.

LV100-1000/SP25 Key Technical Specifications

LV100-1000/SP25 Core Advantages – Why Choose LV100-1000/SP25?

High Accuracy with Closed-Loop Hall Technology for Precise Measurement

Closed-loop Hall effect compensation technology accurately eliminates nonlinearity errors from the core and coil, achieving ±0.9% accuracy and <±0.1% linearity. This ensures data reliability even under complex waveform conditions.

Strong Electrical Isolation for Enhanced Safety

With an isolation test voltage of 12 kV RMS between primary and secondary circuits, any abnormal voltages on the highvoltage side are completely blocked from affecting the control system, protecting both personnel and downstream control electronics.

Fast Dynamic Response to Capture Transient Changes

A response time of 110 µs enables realtime monitoring of transient voltage fluctuations such as DC bus voltage and IGBT switching waveforms, providing accurate dynamic closedloop control signals for drives and servo systems.

Excellent Noise Immunity

The closedloop Hall design offers high commonmode rejection. Builtin shielding effectively suppresses external electromagnetic interference, ensuring stable operation even in harsh highfrequency, highvoltage EMI environments.

Wide Operating Temperature Range

Operating temperature from 0°C to +70°C and storage temperature down to -25°C make the transducer suitable for longterm stable operation under various industrial and climatic conditions.

Easy Installation with M5 Threaded Studs

Both primary and secondary connections use M5 threaded studs, providing secure and reliable wiring that is compatible with standard industrial terminals, simplifying system deployment.

LV100-1000/SP25 Typical Applications

The LV100-1000/SP25 is widely used in highvoltage, highreliability measurement scenarios, including:

AC drives and servo motor drives – realtime monitoring of inverter bus voltage for precise speed and torque control.

DC motor drive static converters – providing highaccuracy voltage feedback for industrial DC drives.

Uninterruptible power supplies (UPS) – monitoring battery voltage and inverter input/output to protect critical loads.

Switchedmode power supplies (SMPS) and telecom power supplies – reliable voltage detection for various SMPS and telecom power systems.

Renewable energy systems – realtime DClink voltage monitoring in photovoltaic inverters and wind turbine converters.

Welding power supplies and industrial power supplies – precise measurement of voltage variations during welding for consistent quality.

Industrial robots, elevators, and cranes – providing reliable control feedback for electric actuators.

Nuclear fusion experiments and highenergy physics facilities – the LV100 series has been successfully used in projects such as China's HL2A tokamak, demonstrating excellent performance for highvoltage measurements from 600 V to 3510 V under extreme conditions.

Electric traction and wayside signalling systems – widely used in railway traction converters and wayside equipment monitoring.