LF2005-S/SP2，LF 2005-S/SP2

‌LF2005-S/SP2 Product Description — The Foundation of Industrial Current Sensing

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LF2005-S/SP2 ‌Core Advantage: Precision Engineered, Simplified for Reliability‌
The LF2005-S/SP2 is not an upgrade — it’s the benchmark. As the foundational model in LEM’s LF2005-S series, it delivers ‌±0.3% accuracy‌ and ‌6 kV RMS galvanic isolation‌ without the added complexity of digital interfaces or proprietary connectors. Built for engineers who demand uncompromised performance in harsh environments, it combines the proven closed-loop Hall technology of LEM’s industrial lineage with a streamlined, universally compatible design. It doesn’t just measure current — it guarantees system integrity.

LF2005-S/SP2 ‌Key Features: Built for the Industrial Floor‌

‌Closed-Loop Hall Effect Technology‌: Actively compensates for magnetic drift and hysteresis, ensuring ‌±0.3% accuracy‌ even under rapid current transients from VFDs, inverters, and PWM drives — critical for dynamic control stability.

‌Dual-Polarity Power Supply‌: Operates seamlessly across ‌±15 V to ±24 V‌, eliminating the need for external voltage regulation and enabling direct integration into industrial DC buses, UPS systems, and mixed-voltage control panels.

‌400 mA Linear Current Output‌: Delivers a noise-immune, direct-to-PLC signal — no external shunts, amplifiers, or signal conditioning required. Reduces wiring errors and accelerates commissioning.

‌Industrial-Grade Robustness‌: Housed in ‌UL 94-V0‌ flame-retardant material with ‌-40°C to +85°C‌ operational range — performs reliably in unheated enclosures, outdoor substations, and high-vibration manufacturing lines.

‌Galvanic Isolation‌: Certified to ‌EN 50178‌, providing complete electrical separation between high-power primary circuits and sensitive control electronics — essential for safety in traction systems, battery arrays, and high-voltage DC networks.

‌Standardized Panel Mount Design‌: Compatible with Molex and JST industrial connectors — enables consistent installation across fleets and simplifies maintenance without retraining or redesign.

LF2005-S/SP2 ‌Technical Specifications‌

‌Rated Current‌: 2000 A (RMS)

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

‌Output Signal‌: 400 mA (linear, current-mode)

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

‌Accuracy‌: ±0.3% at 25°C

‌Linearity‌: ±0.1%

‌Response Time‌: <1 µs

‌Isolation Voltage‌: 6 kV RMS

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

‌Frequency Response‌: 0 Hz to 100 kHz

‌Installation‌: Panel mount, vertical or horizontal orientation

‌Certifications‌: CE, RoHS, EN 50178

‌Warranty‌: Global 5-year limited warranty

LF2005-S/SP2 ‌Applications: Powering Critical Systems with Confidence‌

‌Variable Frequency Drives (VFDs)‌: Monitors motor phase currents in real time — enabling precise torque control, overload protection, and predictive maintenance in industrial automation.

‌Uninterruptible Power Supplies (UPS)‌: Tracks DC bus and inverter output currents — ensuring seamless transition during grid failures and preventing cascading failures in data centers and telecom infrastructure.

‌Battery Energy Storage Systems (BESS)‌: Measures charge/discharge currents in lithium-ion and flow battery stacks — supporting cell balancing, state-of-health estimation, and thermal runaway prevention.

‌Renewable Energy Inverters‌: Monitors DC input and AC output in solar and wind installations — enabling MPPT optimization, grid synchronization, and fault isolation under fluctuating environmental loads.

‌Industrial Rectifiers & Electrolysis‌: Ensures stable feedback for high-current processes in electroplating, aluminum smelting, and hydrogen production — maintaining process consistency under continuous load.

‌Rail Traction Systems‌: Monitors traction motor and DC link currents in locomotives and metro systems — enabling regenerative braking control and real-time fault detection without service interruption.

‌Why Choose LF2005-S/SP2?‌

‌Universal Compatibility‌: Shares identical electrical characteristics with SP20, SP21, and SP24 — enabling direct replacement in legacy systems without firmware or hardware redesign.

‌Zero-Downtime Installation‌: Panel-mount design allows for safe, live-circuit installation — critical for continuous production environments where shutdowns are cost-prohibitive.

‌Thermal Stability Without Compromise‌: Maintains full accuracy across the entire -40°C to +85°C range — no derating required, even in unconditioned enclosures or high-temperature zones.