LV100-1000/SP23;LV 100-1000/SP23

LEM LV100-1000/SP23 High-Precision Closed-Loop Hall Effect Voltage Transducer

LV100-1000/SP23 Key Highlights

1000 V nominal voltage, 1500 V wide measuring range – Easily measure DC, AC and pulsed voltages

Closed-loop Hall effect technology – Excellent accuracy and ultralow temperature drift

Superior linearity (< ±0.1%) – Accurate signal response to stringent industrial standards

Fully isolated primary to secondary – Isolation test voltage up to 12 kVRMS, providing a robust safety margin for traction and highsafety applications

Wide supply voltage range (±16 to 33 V) – Accepts ±15 V to ±24 V inputs for excellent compatibility

M5 screw terminal connection – Secure, vibrationresistant mounting on both primary and secondary sides

Wide operating temperature – Storage from -25°C to 85°C, industrialgrade environmental tolerance

UL 94-V0 flameretardant housing – Meets highest safety standards for peace of mind

LV100-1000/SP23 Product Overview

The LV100-1000/SP23 is a highperformance model in LEM’s LV100 voltage transducer series, specially optimised for industrial and tractiongrade applications. It uses advanced closedloop Hall effect technology with an integrated primary resistor R₁, providing full galvanic isolation between primary and secondary circuits. The supply voltage range is extended to ±16 to 33 V, offering greater power supply compatibility than the base model and making it ideal for applications such as railway traction that demand higher safety margins. The transducer uses M5 screw terminals for robust, vibrationresistant connections, delivering compact yet powerful performance while ensuring safe, accurate transmission of highvoltage measurement signals to lowvoltage control circuits.

LV100-1000/SP23 Key Technical Specifications

Why Choose Closed-Loop Hall Effect Technology LV100-1000/SP23?

Conventional openloop transducers suffer from measurement errors in strong magnetic fields. The LV100-1000/SP23 employs closedloop (compensated) Hall effect technology with a builtin compensation winding that actively nullifies the measured magnetic field, offering these unmatched advantages:

Excellent accuracy – ±0.7% overall accuracy ensures reliable power system monitoring

Superior linearity – < ±0.1% linearity error maintains measurement consistency across the full range

Ultralow thermal drift – Minimal impact from temperature variations, reducing calibration needs

High immunity to interference – Excellent rejection of stray magnetic fields and external EMI

Wide frequency response – Accurately captures DC, AC and fast pulse voltages

LV100-1000/SP23 Typical Applications

The LV100-1000/SP23 is optimised for industrial and tractiongrade applications demanding the highest levels of safety and reliability, especially: Traction applications – railway converters, electric locomotives, highspeed train traction systems where measurement reliability, isolation rating and vibration resistance are critical. The ±16 to 33 V wide supply range allows flexible integration into various auxiliary power systems. It is also widely used in:

AC variable speed drives and servo motor drives – Accurate voltage monitoring

DC motor drive static converters – Ensuring stable DC motor operation

Uninterruptible power supplies (UPS) – Realtime input/output voltage monitoring

Welding equipment power supplies – Precise control of welding parameters

Renewable energy systems – Voltage monitoring in photovoltaic inverters and wind turbine converters

Industrial automation equipment – Power quality measurement and control

Server power supplies and telecom base station power – Closedloop voltage control in highreliability systems

LV100-1000/SP23 Quick Comparison with Other Models

Feature	LV100-1000/SP23	LV100-1000/SP24
Nominal Voltage	1000 V	1000 V
Measuring Range	±1500 V	±1500 V
Accuracy	±0.7%	±0.7%
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