LF2000-S/SP8，LF 2000-S/SP8

‌LF2000-S/SP8 Product Description — The Uncompromising Benchmark for Extreme-Environment Current Sensing

‌

LF2000-S/SP8 ‌Core Advantage: Rugged Precision, Engineered for the Hardest Conditions‌
The LF2000-S/SP8 is not merely a current sensor — it is a mission-critical guardian for systems operating where failure is not an option. Built on LEM’s closed-loop Hall technology, it delivers ‌±0.3% accuracy‌ under the most extreme thermal and electrical stresses, with ‌12 kV RMS galvanic isolation‌ and an operational range extending from ‌-50°C to +85°C‌. Unlike variants burdened with digital interfaces or narrow thermal windows, the SP8 strips away complexity to deliver pure, reliable analog performance — trusted in rail traction, grid-scale storage, and high-voltage industrial drives where ambient conditions defy conventional limits.

LF2000-S/SP8 ‌Key Features: Built to Endure, Designed to Perform‌

‌Extended Thermal Range‌: Operates flawlessly from ‌-50°C to +85°C‌ — outperforming standard industrial sensors in Arctic substations, desert solar farms, and unheated locomotive compartments.

‌12 kV RMS Isolation‌: Exceeds EN 50155 and EN 50121-3-2 standards, providing unmatched electrical separation between high-voltage DC links and sensitive control circuits — critical for traction and renewable energy systems.

‌±3700 A Measurement Range‌: Handles transient overloads up to 1.85× rated current without saturation, ensuring continuous monitoring during motor startup, fault events, or battery surge conditions.

‌400 mA Linear Current Output‌: Delivers a direct, noise-immune analog signal compatible with legacy PLCs, DCS, and analog control modules — no external conditioning, no signal loss, no firmware dependencies.

‌UL 94-V0 Enclosure‌: Flame-retardant housing resists arc flash and thermal degradation — certified for use in high-energy environments like electrolysis cells, welding systems, and battery enclosures.

‌Molex-Compatible SP8 Interface‌: Maintains mechanical and electrical parity with LF2000-S/SP2, SP9, and SP10 — enabling seamless field replacement without re-wiring, re-calibration, or retraining.

‌<1 µs Response Time‌: Captures fast transients from PWM inverters and IGBT switching with zero lag — essential for real-time torque control and fault detection in dynamic power systems.

LF2000-S/SP8 ‌Technical Specifications‌

‌Rated Current‌: 2000 A (RMS)

‌Measurement Range‌: ±3700 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: 12 kV RMS

‌Operating Temperature‌: -50°C to +85°C

‌Storage Temperature‌: -50°C to +85°C

‌Frequency Response‌: 0 Hz to 100 kHz

‌Secondary Resistance‌: 24 Ω (at 70°C), 25 Ω (at 85°C)

‌Magnetic Offset Current‌: ±0.5 mA (at -50°C to +85°C)

‌Certifications‌: EN 50155, EN 50121-3-2, RoHS, CE

‌Weight‌: 1.5 kg

‌Mounting‌: Panel mount, vertical or horizontal orientation

LF2000-S/SP8 ‌Applications: Powering Critical Systems in the Most Demanding Environments‌

‌Rail Traction Systems‌: Monitors traction motor currents in locomotives and metro vehicles — enabling regenerative braking control and real-time fault isolation under extreme cold, vibration, and electromagnetic interference.

‌Grid-Scale Battery Energy Storage (BESS)‌: Tracks charge/discharge currents in lithium-ion and sodium-sulfur arrays — supporting cell balancing, state-of-health algorithms, and thermal runaway prevention in outdoor containerized installations.

‌High-Power Industrial Inverters‌: Provides stable feedback for VFDs driving large compressors, extruders, and rolling mills — maintaining precision during voltage sags, harmonics, and load spikes.

‌Electrolysis & Metal Refining‌: Ensures consistent current control in aluminum smelting and green hydrogen production — where continuous 24/7 operation and thermal cycling demand unmatched sensor stability.

‌Renewable Energy DC Links‌: Monitors DC bus currents in wind and solar farms — enabling MPPT optimization, grid synchronization, and arc fault detection under fluctuating irradiance and wind profiles.

‌Uninterruptible Power Supplies (UPS)‌: Detects DC bus anomalies and inverter output deviations — preventing cascading failures in data centers and telecom hubs during grid transitions.

‌Why Choose LF2000-S/SP8?‌

‌Extreme Environment Proven‌: The only SP-series variant certified for ‌-50°C operation‌ — ideal for Arctic installations, high-altitude substations, and unconditioned industrial enclosures.

‌Highest Isolation in Class‌: ‌12 kV RMS isolation‌ exceeds typical 6 kV standards — providing enhanced safety in high-voltage DC networks and traction systems.

‌Zero-Downtime Field Replacement‌: Identical footprint and electrical behavior to SP9/SP10 — swap in minutes, not days, without system revalidation.