LV25-600/SP5,LV 25-600/SP5

‌LV25-600/SP5 Product Description — Industrial Voltage Sensing with Enhanced Closed-Loop Precision

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LV25-600/SP5 ‌Core Advantage

The LV25-600/SP5 is not a simple voltage sensor — it is a ‌high-precision, closed-loop Hall effect voltage transducer‌ engineered by LEM to deliver ‌±0.8% accuracy‌ across a dynamic range of ‌10 V to 900 V peak (600 V RMS nominal)‌. Unlike open-loop or legacy designs, it employs ‌real-time magnetic flux compensation‌ to eliminate drift, hysteresis, and temperature-induced error — all without software correction or external calibration. Its ‌4.2 kVRMS galvanic isolation‌ and ‌-40°C to +85°C operational range‌ make it the definitive choice for systems where voltage integrity directly determines safety, efficiency, and uptime.

LV25-600/SP5 ‌Key Features‌

‌SP5 Enhanced Signal Processing‌: The “SP5” suffix denotes an upgraded internal signal conditioning module — delivering ‌faster response (<1 µs)‌ and ‌improved linearity (<0.5%)‌ compared to earlier SP4 variants, ideal for high-speed control loops.

‌Integrated Primary Resistor Network‌: Eliminates need for external shunt resistors — reduces component count, simplifies PCB layout, and removes a common point of failure.

‌25 mA Proportional Output‌: Directly compatible with PLCs, DCS, and analog input modules — no external amplifiers or signal conditioners required.

‌12 V to 15 V DC Bipolar Supply‌: Seamlessly integrates with standard industrial control power rails — no specialized power supplies needed.

‌Wide Input Range‌: Single device covers ‌10 V to 900 V peak‌ — replaces multiple sensors in multi-voltage systems, reducing inventory and complexity.

‌PCB or Panel Mountable‌: Compact design supports both surface-mount integration and panel mounting with Faston terminals — ideal for retrofits and new designs.

‌Zero Drift Over Temperature‌: Factory-trimmed and thermally compensated — maintains accuracy from -40°C to +85°C without recalibration.

‌EMI-Resistant Architecture‌: Shielded magnetic core and differential sensing reject noise from VFDs, inverters, and switching power supplies — performs reliably in electrically noisy environments.

‌UL94 V-0 Flame-Retardant Housing‌: Certified for continuous operation in dusty, humid, or chemically aggressive industrial settings.

‌No Calibration Required After Installation‌: Out-of-the-box precision — install once, operate for decades.

LV25-600/SP5 ‌Technical Specifications‌

‌Function‌: Closed-loop Hall effect voltage transducer

‌Nominal Input Voltage‌: 600 V RMS

‌Measurement Range‌: 10 V – 900 V (peak)

‌Output Signal‌: 25 mA (proportional to input voltage)

‌Supply Voltage‌: 12 V – 15 V DC (bipolar)

‌Accuracy‌: ±0.8% of nominal voltage @ 25°C

‌Linearity Error‌: <0.5%

‌Isolation Voltage‌: 4.2 kVRMS / 50 Hz (1 min)

‌Bandwidth‌: DC to 200 kHz

‌Response Time‌: <1 µs

‌Operating Temperature‌: -40°C to +85°C

‌Storage Temperature‌: -40°C to +100°C

‌Power Consumption‌: ≤150 mA @ 15 V

‌Mounting‌: PCB or panel (Faston 6.3 × 0.8 mm terminals)

‌Compliance‌: UL94 V-0, IEC 61010, EN 50178

‌Protection Class‌: IP20 (enclosed)

‌Lifetime‌: Designed for 20+ years of continuous industrial operation — MTBF > 100,000 hours

LV25-600/SP5 ‌Applications: Where Voltage Integrity Is Critical‌

‌Industrial Variable Frequency Drives (VFDs)‌: Monitors DC bus voltage in real time — enables precise torque control, overvoltage protection, and regenerative braking stability.

‌Renewable Energy Inverters‌: Measures input/output voltage in solar and wind power converters — critical for MPPT algorithms and grid synchronization.

‌Uninterruptible Power Supplies (UPS)‌: Tracks battery stack voltage during charge/discharge cycles — prevents deep discharge and ensures seamless utility-to-battery transfer.

‌Welding Power Supplies‌: Delivers real-time arc voltage feedback — enables stable arc formation and consistent weld quality in automated systems.

‌Railway Traction Systems‌: Monitors auxiliary power circuits in locomotives and metro systems — withstands vibration, EMI, and extreme thermal cycling.

‌High-Voltage Test & Calibration Equipment‌: Used in metrology labs and diagnostic tools — delivers lab-grade accuracy without external calibration.

‌Battery Management Systems (BMS)‌: Serves as system-level voltage reference in medium-voltage battery stacks — complements cell-level monitoring with robust, isolated sensing.

‌Why Choose LV25-600/SP5?‌

‌SP5 Upgrade Advantage‌: The SP5 variant delivers ‌faster transient response‌ and ‌superior noise rejection‌ over SP4 models — optimized for modern high-frequency control systems.

‌Hardware-Enforced Reliability‌: No firmware, no microcontroller, no software bugs — measurement is analog, magnetic, and immutable.

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