LT2005-T/SP6 Closed-Loop Hall Effect Current Sensor

Superior Measurement, Precise Control at Every Moment

LT2005-T/SP6 Product Overview

The LT2005-T/SP6 is a closed-loop Hall effect current sensor from LEM, a Swiss-based global leader in electrical measurement. Designed for demanding applications in rail transportation, industrial traction, renewable energy, and high-precision automation equipment, this sensor meets the stringent requirements for current monitoring of DC, AC, and pulsed currents. It supports a nominal primary current of up to 2000 ARMS, with a maximum measuring range of 3000 A (certain versions can measure up to 3500 A to accommodate extreme operating conditions).

Thanks to the advanced closed-loop Hall effect principle, the sensor delivers extremely high measurement accuracy (0.3%–0.4%) and excellent linearity, combined with very low temperature drift and zero drift. It is ideal for electrical measurement scenarios where results are critical and environments are complex. Whether used in traction converters, three-phase inverters, or battery charge/discharge management systems, the LT2005-T/SP6 provides real-time, accurate, isolated monitoring of primary circuit currents.

With outstanding anti-interference capability and optimized response time, the sensor ensures distortion-free output signals and high measurement stability, providing reliable data support for safe equipment operation and energy optimization.

LT2005-T/SP6 Key Advantages

Closed-Loop Hall Technology, Ultimate Accuracy
Utilizing closed-loop Hall effect technology, this sensor offers higher accuracy and superior linearity compared to conventional open-loop sensors. Accuracy reaches 0.3%–0.4%, delivering exceptional reliability especially in high-frequency or wide dynamic range current measurements. Perfect for demanding industrial control and high-power equipment.

Wide Range and Overload Capability
With a nominal primary current of 2000 A and a maximum measuring range of 3000 A (peak up to 3500 A under certain conditions), it can withstand instantaneous overload currents such as motor starting inrush currents or sudden load changes in traction converters, providing a solid safety margin for the system.

Excellent Wide-Temperature Performance
Supports an industrial wide operating temperature range: standard version -25°C to +70°C, with specially calibrated versions extending to -40°C to +70°C. Whether in extreme heat or cold, the sensor maintains minimal temperature drift and stable zero output, ideal for hot, harsh railway environments as well as cold northern regions.

High Isolation and Large Aperture Design
Features a 60.5 × 20.5 mm rectangular or 56 mm circular aperture, allowing easy passage of primary conductors or busbars for safe, contactless, isolated measurement.

Very Low Insertion Loss
Current output mode (400–500 mA secondary signal) ensures low power consumption and minimal heat generation, improving system energy efficiency.

Flexible Power Supply Compatibility
Supports both unipolar (+24V) and bipolar (±12V to ±24V DC) power supplies, adapting to different auxiliary power architectures in rail vehicles. Plug-and-play with maximum flexibility.

LT2005-T/SP6 Technical Specifications

LT2005-T/SP6 Typical Applications

Rail Transportation & Traction Systems
Core current monitoring component in traction converters, braking choppers, auxiliary converters, battery chargers, and main/auxiliary switching systems. The LT2005-T/SP6 is modularly optimized for the diverse market demands of railway systems, operating reliably under high voltage and strong vibration conditions.

Renewable Energy & Energy Storage
In solar PV and wind power systems, used for battery charge/discharge current management, inverter output monitoring, and grid-connected equipment current protection, meeting the renewable energy industry's needs for high accuracy, excellent linearity, and wide dynamic range.

Industrial Automation & High-Power Drives
Precise closed-loop current control in robotic servo drives, large CNC machines, DC power supplies, welders, and high-power frequency converters ensures smooth drive performance and prevents module overheating or core saturation.

High-Reliability Military & Special Equipment
With excellent anti-interference capability and wide-temperature stability, it is ideal for aerospace, shipboard power monitoring, unmanned platform drives, and other applications with extreme precision requirements.

Traditional & New Energy Vehicles
Suitable for on-board DC/DC converters, high-power charging modules, and battery simulation test systems, delivering highly trustworthy measurement data even in noisy electrical environments.

Smart Grid & Industry 4.0
Acts as the "sensing tentacle" for electrical data acquisition, integrated into process automation monitoring systems, low-voltage distribution cabinets, and multi-loop monitoring devices, providing critical current parameters for energy management and predictive equipment maintenance.

Why Choose LT2005-T/SP6?

LEM is the world's pioneer and inventor of electrical transducers, founded in 1972 and headquartered in Geneva, Switzerland. Listed on the Swiss Stock Exchange (ticker: LEHN) since 1986, LEM has over five decades of deep expertise in electrical parameter measurement, accumulating unique experience in ASIC design, embedded software, product development, manufacturing, and testing. LEM offers the broadest range of current and voltage measurement products worldwide.

The LT2005-T/SP6 exemplifies LEM's profound technological heritage – choosing LEM means choosing accuracy, safety, and trustworthy electrical measurement solutions.