LV100/SP17 Series Voltage Transducers – Accurate · Reliable · Full-Range Coverage

In power electronic systems where measurement accuracy and safe isolation are increasingly critical, the choice of transducer is key to overall system stability. The LV100/SP17 series voltage transducers – built on LEM’s 30+ years of closed-loop Hall-effect expertise – offer a high-accuracy, high-reliability voltage measurement solution for industrial and commercial applications.

Key Advantages – Why Choose LV100/SP17

 mW Accuracy, µs Response

Using closed-loop Hall-effect technology, the transducer achieves accuracy up to 0.7% and delivers an instantaneous secondary output current of 50 mA with extremely fast response. For systems requiring real-time feedback control and precise harmonic compensation – this means truly “what you see is what you get”.

Wide Voltage Range – One Device Fits Many Needs

Measures nominal voltages from 100 V to 2500 V, with a maximum measurable range up to 3000 V. Whether for low-voltage distribution panels or high-voltage converter compartments, one transducer type covers most voltage measurement requirements, greatly simplifying spare parts management.

Original Brand, Original Quality

LEM – the world leader in closed-loop Hall-effect transducers. Swiss original design and manufacturing, from chip selection to packaging, follow industrial-grade rigorous standards – never a “rebranded” or “compatible” solution.

Full Temperature Stability – –25 °C to 70 °C

Wide operating temperature range ensures measurement accuracy does not degrade in cold winter substations or hot summer converter cabinets. The transducer’s parameters guarantee stable and reliable output.

Safe Isolation – Worry-Free Layout

Complete electrical isolation between primary and secondary circuits, combined with a UL 94-V0 flame-retardant insulation housing. Even if an anomaly occurs on the high-voltage side, the control circuit remains protected – safeguarding equipment and personnel.

“Zero-Loss” Transmission of Closed-Loop Hall Technology

Traditional sampling methods suffer from insertion loss and accumulated temperature drift. Closed-loop Hall technology uses a magnetic balance compensation mechanism to achieve near-zero insertion loss, with excellent linearity and low temperature drift.

LV100/SP17 Technical Specification Overview

LV100/SP17 Application Scenarios – Where High-Accuracy Voltage Measurement is Needed, LV100/SP17 is There

Electrical Drives & Frequency Converters

AC drives and servo motor drive systems need real-time bus voltage monitoring for closed-loop control. LV100/SP17 provides precise, instantaneous voltage feedback, making torque response faster and speed regulation smoother.

Renewable Energy & Energy Storage

MPPT efficiency of PV inverters and charge/discharge management of energy storage PCS highly depend on accurate DC-link voltage sampling. The LV100/SP17 series, with its high accuracy and wide range, is an indispensable component in modern renewable power conversion systems.

UPS & SMPS

UPS inverter state switching, fault protection, and SMPS output voltage regulation all rely on voltage sensing as the “first line of perception”. LV100/SP17 helps stabilise power supplies with fast response and high isolation.

Power Quality – Active Power Filters (APF)

In APF harmonic mitigation systems, voltage detection accuracy directly affects compensation performance. LEM transducers are widely used in APF DC-link voltage stabilisation and grid synchronisation thanks to their high precision and fast response, ensuring dynamic tracking performance.

Railway & Traction Drives

Auxiliary converters and braking choppers on trains demand extremely high reliability. The LV100/SP17 series has proven itself in such industrial environments where temperature shocks and long-term operational life are critical.

Why Should LV100 IGBT Module Users Also Pay Attention to SP17?

It is worth noting that “LV100” is also the name of Mitsubishi Electric’s new generation of high-power IGBT modules. LV100 IGBT modules are designed for highpower applications such as PV inverters, energy storage converters, and industrial motor drives. They feature a 2.0 kV rated withstand voltage that simplifies design of DC 1500 V power converters, significantly reduces power losses, and improves overall energy conversion efficiency. In renewable energy markets (PV and storage), Mitsubishi Electric’s 8th-generation LV100 IGBT modules act as the core power switching devices, converting DC to AC with enhanced system efficiency and reliability.

We supply both LEM voltage transducers and Mitsubishi IGBT power modules – providing a one-stop solution for the “sensing” and “actuation” critical components of any power system.