LF2005-SC/SP21,LF 2005-SC/SP21

‌LF2005-SC/SP21 Product Description — Revolutionizing Field Deployment with Split-Core Current Sensing

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LF2005-SC/SP21 ‌Key Features‌
‌Split-Core Clamp Design‌: The LF2005-SC/SP21 features an innovative split-core magnetic structure that enables installation without disconnecting the primary conductor, drastically reducing downtime during maintenance or system upgrades — a critical advantage over traditional solid-core sensors.
‌Closed-Loop Hall Precision Measurement‌: Leveraging LEM’s patented closed-loop compensation technology, it delivers ‌±0.3%‌ accuracy by automatically correcting temperature drift and hysteresis errors, ensuring stable, distortion-free output in electrically noisy environments. Factory-calibrated and maintenance-free for life.
‌Wide Dual-Supply Compatibility‌: Operates on ‌±15 V to ±24 V‌ dual polarity power, seamlessly integrating with industrial DC buses, UPS systems, and multi-voltage platforms without requiring external voltage regulation.
‌Ultra-Fast Dynamic Response‌: With a response time under ‌1 µs‌, it precisely captures millisecond-level pulse currents and transient overcurrent events, ideal for real-time feedback in high-speed motor drives, heavy-duty welding, and inverter startup transients.
‌Industrial-Grade Electrical Isolation‌: Provides ‌>5 kV RMS‌ galvanic isolation between primary and secondary circuits, meeting ‌EN 50178‌ safety standards, ensuring operator and system protection in high-risk environments such as traction converters and energy storage stations.
‌Robust Environmental Resilience‌: Encased in UL 94-V0 flame-retardant engineering plastic, it resists corrosion and vibration, maintaining performance across the full operating range of ‌-40°C to +85°C‌, suitable for unconditioned cabinets, outdoor distribution boxes, and rail tunnels.
‌Global Five-Year Warranty, Local Support‌: Backed by LEM’s global five-year warranty, with dedicated technical support from the Shandong Jining, China center offering localized consultation, selection guidance, and spare parts delivery — ensuring 48-hour response to critical failures and minimizing production interruptions.

LF2005-SC/SP21 ‌Technical Specifications‌

‌Rated Current‌: 2000 A (RMS)

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

‌Output Type‌: Current output (typical 400 mA)

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

‌Accuracy‌: ±0.3%

‌Response Time‌: <1 µs

‌Isolation Voltage‌: >5 kV RMS

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

‌Mounting Method‌: Split-core clamp, enabling live installation

‌Connector Options‌: Molex, JST industrial-grade terminals

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

‌Certifications‌: EN 50178, CE, RoHS

LF2005-SC/SP21 ‌Applications‌
The LF2005-SC/SP21 is engineered for ‌live-system monitoring‌ and serves as the ‌preferred online sensing solution‌ in modern industrial automation and energy systems:

‌Industrial Automation Lines‌: Real-time current monitoring and predictive fault detection in operating VFDs, servo drives, and robotic controllers

‌Renewable Energy Stations‌: Online calibration and balancing of charge/discharge currents in photovoltaic inverters and battery energy storage systems (PCS) to enhance efficiency and lifespan

‌Railway Traction Systems‌: Dynamic current acquisition in subway and high-speed rail converters, enabling sensor replacement without service interruption

‌High-Power Welding Equipment‌: Closed-loop feedback for pulse current control in arc and laser welders, ensuring consistent weld quality

‌Data Centers & Telecom Bases‌: Online monitoring of input/output currents in UPS and DC distribution units to improve power reliability

‌High-Voltage Distribution Networks‌: Non-intrusive replacement for traditional current transformers in substations and switchgear, enabling safe, contactless sampling

‌Why Choose LF2005-SC/SP21?‌
Within the industrial current sensor market, the LF2005-SC/SP21 doesn’t just deliver performance — it redefines operational logic through its ‌revolutionary installation method‌:

‌Zero-Downtime Deployment‌: Unlike the SP4’s solid-core design requiring power-off disconnection, the SP21’s split-core allows “clamping” onto live conductors — saving hours or even days of production downtime and directly boosting OEE.

‌Plug-and-Play Output‌: Standard ‌400 mA current output‌ connects directly to PLCs, DCS, and SCADA systems without external signal conditioning, reducing commissioning time by over 30%.

‌Full-Temperature Stability‌: Maintains accuracy across ‌-40°C to +85°C‌, ideal for uncooled outdoor enclosures, high-temperature workshops, and wind farms in arctic climates.

‌Global Standard, Localized Support‌: As an official LEM-certified model, SP21 shares the same platform as SP4 — ensuring component compatibility, consistent documentation, and access to factory-provided technical guides, installation videos, and diagnostic support from Jining, China.

‌Future-Ready Architecture‌: The split-core form factor is designed to accommodate future upgrades to digital outputs, IO-Link, or wireless communication modules — making it the ideal foundation for building IIoT-enabled current monitoring nodes.