LF2005-S/SP26，LF 2005-S/SP26

LF2005-S/SP26 Product Description — Engineered for Extreme Industrial Environments

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LF2005-S/SP26 ‌Key Features‌
The LF2005-S/SP26 is a high-performance closed-loop Hall current sensor from LEM, purpose-built for applications demanding ‌uncompromising stability under extreme thermal stress‌. Built on the same proven closed-loop compensation architecture as the LF2005-S series, it delivers ‌±0.4% accuracy‌ and a ‌response time under 1 μs‌, ensuring precise current feedback even during rapid transients. Unlike standard variants, the SP26 variant extends its operational ceiling to ‌+85°C‌, making it the ideal choice for high-temperature industrial enclosures, dense power modules, and outdoor energy systems. Its ‌500 mA RMS secondary output‌ provides stronger signal drive capability than the SP33’s 400 mA, reducing the need for external amplification in long-distance or noisy control environments. The sensor maintains ‌≥5 kV galvanic isolation‌ between primary and secondary circuits, fully compliant with EN 50178, while its robust housing ensures reliability in dusty, humid, or vibration-prone settings.

LF2005-S/SP26 ‌Technical Specifications‌

‌Rated Current‌: 2000 A (RMS)

‌Measurement Range‌: 0 to ±3000 A (peak)

‌Secondary Output‌: 500 mA (RMS)

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

‌Current Consumption‌: 33 mA (@ ±24 V, including output)

‌Accuracy‌: ±0.4% (@ 25°C, rated current)

‌Linearity Error‌: < 0.1%

‌Zero Drift‌: ±0.3 mA (@ 25°C)

‌Temperature Drift‌: ±0.3 mA (–40°C to +85°C)

‌Response Time‌: < 1 μs (90% output rise time)

‌Bandwidth‌: DC to 100 kHz (–3 dB)

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

‌Storage Temperature‌: –40°C to +85°C

‌Insulation Voltage‌: ≥ 5 kV (AC, 1 minute)

‌Protection Rating‌: Complies with UL 94-V0 plastic housing standard

‌Mounting‌: Disc mounting with bolt fixation, compatible with M6 steel screws (5.5 Nm torque)

LF2005-S/SP26 ‌Applications‌
The LF2005-S/SP26 excels in environments where heat accumulation threatens sensor performance:

‌High-Density Industrial VFDs‌: Maintains accuracy in tightly packed drive cabinets where ambient temperatures exceed 70°C

‌Solar and Wind Inverters‌: Stable operation in outdoor combiner boxes and converter housings exposed to direct sunlight and seasonal extremes

‌Railway Traction Systems‌: Reliable current feedback in locomotive underfloor installations subject to prolonged thermal cycling

‌Electric Vehicle Fast-Charging Stations‌: Ensures precise DC-link monitoring in high-power chargers with sustained thermal loads

‌Heavy-Duty Welding Equipment‌: Delivers consistent signal output during prolonged arc operations that generate intense localized heat

‌Why Choose LF2005-S/SP26?‌
When your system operates beyond the limits of conventional sensors, the SP26 isn’t just an alternative—it’s a ‌thermal resilience upgrade‌. While the SP33 is optimized for standard industrial use up to +70°C, the SP26’s extended ‌+85°C rating‌ eliminates derating concerns in hot zones, reducing system-level thermal management complexity. The ‌higher secondary output (500 mA)‌ means fewer external components, lower BOM cost, and improved signal integrity over longer cable runs. Combined with LEM’s industry-leading ‌closed-loop architecture‌, this model ensures ‌long-term calibration stability‌—critical for applications where maintenance access is limited or costly. For engineering teams deploying systems in desert climates, enclosed machine rooms, or high-power EV infrastructure, the LF2005-S/SP26 isn’t a compromise—it’s the ‌only sensor that keeps pace with your environment‌.