LA 205-S/SP1

Current Sensors Overview

The LEM LA 205-S/SP1 is a closed-loop Hall effect current transducer designed for precise measurement of AC and DC currents. It features a nominal primary current rating of 200 A with a secondary output sensitivity of 1 V/A. The device operates on a dual supply voltage ranging from +/- 15 V to +/- 24 V, consuming a maximum supply current of 35 mA. Key electrical specifications include a linearity error of +/- 0.8% and an accuracy class of 1. The sensor offers a fast response time of 1 microsecond and maintains operational stability across a wide temperature range from -40°C to +70°C. It provides galvanic isolation between the primary conductor and the secondary circuitry.

Current Sensors Feature Summary

• Closed-loop Hall effect technology ensures high precision and low thermal drift
• Galvanic isolation protects control circuits from high voltage primary conductors
• Compact panel-mount design facilitates integration into various power systems

Current Sensors Applications

• Motor drive inverters and variable frequency drives
• Uninterruptible power supply (UPS) systems
• Industrial welding equipment current monitoring

Current Sensors Procurement Notes

Verify the specific suffix designation against the manufacturer's latest documentation to confirm pinout configuration and mounting style compatibility. Ensure that the supply voltage requirements align with the target system's available rails. Confirm that the mechanical aperture dimensions match the primary busbar or cable diameter intended for installation. Cross-reference the ordering code with official distributors to avoid counterfeit components.

Current Sensors Selection Notes

Select this model when precise tracking of bidirectional AC or DC currents up to 200 A is required in space-constrained environments. The closed-loop architecture is suitable for applications demanding low offset drift and high bandwidth compared to open-loop alternatives. Consider the physical mounting constraints and the need for isolated feedback signals in control loops. Evaluate thermal management requirements based on the ambient operating conditions specified in the datasheet.

Current Sensors Part Context

This component belongs to LEM's LA series of current transducers, which are widely utilized in industrial automation and power electronics. The series is characterized by robust construction and reliable performance in harsh electrical environments. The LA 205-S variant specifically targets medium-current applications where accurate feedback is critical for system efficiency and protection.

Current Sensors Replacement Considerations

Direct replacements may include the LF 205-S/SP1 or similar LEM models within the same current rating family. Verify that substitute parts maintain identical pin assignments and sensitivity ratios to ensure seamless integration without redesigning the PCB layout or signal conditioning circuitry.