LV25-1000/SP5,LV 25-1000/SP5

LV25-1000/SP5 Product Description — Precision Voltage Sensing for Industrial Power Integrity

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LV25-1000/SP5 ‌Core Advantage: Industrial-Grade Voltage Transducer, Engineered for Zero-Drift Accuracy in High-Voltage Environments‌
The LV25-1000/SP5 is not a passive sensor — it is a ‌closed-loop Hall effect voltage transducer‌ designed by LEM to deliver ‌0.8% measurement accuracy‌ across extreme industrial conditions. Unlike open-loop alternatives, this device uses ‌magnetic feedback compensation‌ to eliminate drift, hysteresis, and temperature-induced error — ensuring true RMS voltage replication without calibration or software correction. Its ‌4.2 kVRMS galvanic isolation‌ and ‌-40°C to +85°C operational range‌ make it the silent guardian of power control systems where safety, precision, and longevity are non-negotiable.

LV25-1000/SP5 ‌Key Features: Accuracy Locked in Magnetic Feedback‌

‌Closed-Loop Hall Technology‌: Actively cancels magnetic flux imbalances in real time — delivering ‌<0.8% linearity error‌ even under dynamic load conditions.

‌No External Components Required‌: Integrated primary resistor network and output stage eliminate the need for external shunts, amplifiers, or reference circuits — simplifying design and reducing failure points.

‌High Isolation Rating‌: ‌4.2 kVRMS / 50 Hz‌ isolation barrier meets IEC 61010 and EN 50178 safety standards — protects control systems from high-voltage transients and ground loops.

‌Wide Input Range‌: Measures ‌10 V to 1000 V RMS‌ AC/DC with a single device — replacing multiple sensors in multi-voltage systems.

‌Stable Output Signal‌: Provides ‌25 mA‌ proportional current output — directly compatible with PLCs, data loggers, and analog input modules without signal conditioning.

‌Wide Supply Voltage‌: Operates on ‌12 V to 15 V DC‌ — compatible with standard industrial control power rails.

‌Panel or PCB Mountable‌: Designed for both ‌through-hole panel mounting‌ and ‌surface-mount PCB integration‌ — flexible for retrofit or new design.

‌Zero Drift Over Temperature‌: Maintains accuracy across full operating range — no thermal compensation algorithms needed.

‌EMI Immunity‌: Shielded core and differential sensing reject common-mode noise — ideal for VFDs, inverters, and switching power supplies.

‌Robust Construction‌: Encapsulated in flame-retardant, UL94 V-0 rated housing — certified for continuous operation in dusty, humid, or chemically aggressive environments.

LV25-1000/SP5 ‌Technical Specifications‌

‌Function‌: Closed-loop Hall effect voltage transducer

‌Nominal Input Voltage‌: 1000 V RMS

‌Measurement Range‌: 10 V – 1500 V (peak)

‌Output Signal‌: 25 mA (proportional to input)

‌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: Panel or PCB (M5 threaded terminals)

‌Compliance‌: IEC 61010, EN 50178, RoHS

‌Protection Class‌: IP20 (enclosed)

‌Lifetime‌: Designed for 20+ years of continuous industrial operation

LV25-1000/SP5 ‌Applications: Where Voltage Must Be Known — Not Guessed‌

‌Industrial Variable Frequency Drives (VFDs)‌: Monitors DC bus voltage in motor control systems — enables precise torque regulation and overvoltage protection.

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

‌Uninterruptible Power Supplies (UPS)‌: Tracks battery bank voltage during charge/discharge cycles — prevents over-discharge and ensures seamless transfer.

‌Railway Traction Systems‌: Monitors auxiliary power circuits in locomotives and metro systems — withstands vibration, EMI, and wide temperature swings.

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

‌High-Voltage Test Equipment‌: Used in calibration labs and industrial diagnostics — delivers lab-grade accuracy without external calibration.

‌Battery Management Systems (BMS)‌: Serves as primary voltage sensing element in medium-voltage battery stacks — complements cell-level monitoring with system-level oversight.

‌Why Choose LV25-1000/SP5?‌

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

‌Drop-In Replacement for Legacy Systems‌: Directly substitutes LV25-P/SP1, SP3, and other variants — enables seamless upgrade without requalifying entire control loops.