LF2005-S/SP4，LF 2005-S/SP4

‌LF2005-S/SP4 Product Description — The Reliable Standard for Industrial Current Sensing

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LF2005-S/SP4 ‌Key Features‌
‌Closed-loop Hall-effect Precision Measurement‌: Leveraging LEM’s patented closed-loop compensation technology, this sensor delivers ‌±0.3% accuracy‌ with automatic zero-point and nonlinear error correction — ensuring stable, drift-free output in demanding industrial environments. Factory-calibrated for lifetime performance, no field recalibration is required.
‌Wide Dual-Supply Compatibility‌: Operates reliably across ‌±15 V to ±24 V‌ supply ranges, seamlessly integrating with industrial DC buses, UPS systems, and multi-voltage platforms without additional regulation circuitry.
‌Ultra-Fast Dynamic Response‌: With a response time of ‌<1 µs‌, it captures transient overcurrents and pulsed waveforms with precision — ideal for high-speed motor drives, welding systems, and switching power supplies requiring real-time feedback.
‌Reinforced Galvanic Isolation‌: Provides ‌>5 kV RMS‌ isolation between primary and secondary circuits, meeting ‌EN 50178‌ safety standards to protect personnel and control systems in high-voltage power electronics applications.
‌Compact Panel-Mount Design‌: Standard panel-mount configuration supports both vertical and horizontal installation, minimizing space in crowded control cabinets. Equipped with industry-standard ‌Molex or JST terminal connectors‌ for rapid, secure wiring.
‌Global Five-Year Warranty with Local Support‌: Backed by LEM’s worldwide five-year warranty. In China, technical support and replacement parts are available through our Shandong Jining service center, ensuring ‌48-hour response‌ for critical downtime scenarios.

LF2005-S/SP4 ‌Technical Specifications‌

‌Nominal Current‌: 2000 A (RMS)

‌Measurement Range‌: ±3000 A (DC, AC, pulsed)

‌Output Type‌: Current output (typical: 400 mA)

‌Supply Voltage‌: ±15 V to ±24 V (dual supply)

‌Accuracy‌: ±0.3%

‌Response Time‌: <1 µs

‌Isolation Voltage‌: >5 kV RMS

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

‌Mounting‌: Panel-mount, terminal connection

‌Connector Options‌: Molex, JST industrial-grade interfaces

‌Housing Material‌: UL 94-V0 flame-retardant plastic, corrosion-resistant and lightweight

‌Certifications‌: EN 50178, CE, RoHS

LF2005-S/SP4 ‌Applications‌
The LF2005-S/SP4 serves as a core current-sensing element in industrial power electronics, widely deployed in:

‌Industrial Drives‌: Closed-loop feedback and overcurrent protection in VFDs, servo drives, and motor controllers

‌Power Conversion Systems‌: Input/output current monitoring in SMPS, UPS, and DC-DC converters

‌Welding & Thermal Processing‌: Dynamic current control in high-power arc welders and induction heating furnaces

‌Renewable Energy‌: Precise charge/discharge current sampling in photovoltaic inverters and battery energy storage systems (PCS)

‌Rail Transportation‌: Stable signal acquisition in traction converters, auxiliary power units, and braking resistor monitoring

‌Why Choose LF2005-S/SP4?‌
In the competitive landscape of industrial current sensors, the LF2005-S/SP4 stands out as the ‌balanced, high-reliability baseline model‌ for mass deployment:

‌Proven Closed-loop Performance‌: At ‌±0.3% accuracy‌, it outperforms open-loop alternatives, reducing control errors and false tripping in automated production lines.

‌Plug-and-Play Output‌: The standardized ‌400 mA current output‌ connects directly to PLCs, DCS, and data acquisition systems — eliminating the need for external signal conditioning and cutting commissioning time by over 25%.

‌Full Thermal Range Operation‌: Maintains performance consistency from ‌-40°C to +85°C‌, making it suitable for uncooled enclosures, outdoor installations, and high-heat industrial zones.

‌Global Warranty, Local Responsiveness‌: Five-year global coverage paired with on-the-ground technical support in Jining, China — ensuring fast access to documentation, selection guidance, and fault resolution.

‌Optimized Total Cost of Ownership‌: As the standard variant in the LF2005-S series, SP4 delivers 95% of the performance of higher-end models at a lower unit cost — making it the ideal choice for standardized, high-volume applications.