LF 1010-S/SP28

Current Sensors Overview

The LF 1010-S/SP28 is a closed-loop Hall effect current transducer designed for precise electronic measurement of DC, AC, and pulsed currents. It provides galvanic isolation between the primary and secondary circuits. The device features a nominal primary current rating of 1000 A RMS with a secondary output sensitivity of 0.2 mA/A. It operates on a dual power supply ranging from +/- 15 V to +/- 24 V. The unit offers high accuracy within a temperature range of -40°C to +85°C, ensuring reliable performance in demanding industrial environments.

Current Sensors Feature Summary

• Closed-loop Hall effect technology ensures high precision and linearity
• Galvanic isolation between primary and secondary circuits for safety
• Compact design suitable for various panel mounting configurations
• Fast response time for accurate dynamic current measurement

Current Sensors Applications

• Motor drive systems and variable speed drives
• Industrial power supplies and AC/DC converters
• Uninterruptible power systems (UPS)
• Battery management systems in electric vehicles
• Renewable energy applications including solar and wind inverters

Current Sensors Procurement Notes

Verify the specific suffix SP28 against official LEM documentation to confirm pinout and mechanical compatibility. Ensure the operating voltage matches the required dual supply configuration. Confirm that the primary conductor aperture dimensions align with the installation space requirements. Cross-reference the manufacturing date code to ensure component freshness and reliability standards are met for critical applications.

Current Sensors Selection Notes

Select this model when high-precision measurement of large DC or AC currents is required. The closed-loop architecture is preferred over open-loop types for superior linearity and bandwidth. Consider the physical size constraints regarding the 40x13 mm or 38 mm diameter aperture. Evaluate the thermal environment to ensure operation remains within the specified -40°C to +85°C range without derating.

Current Sensors Part Context

This component belongs to the LF series of current transducers from LEM USA Inc. The series is known for robust performance in industrial settings. The LF 1010-S variant specifically targets high-current applications up to 1000 A. The SP28 suffix typically denotes specific packaging or connector options defined by the manufacturer.

Current Sensors Replacement Considerations

Direct substitutes may include other LEM models within the LF series with similar current ratings. Verify mechanical footprint and pin assignment compatibility before swapping. Alternative brands may offer comparable specifications but require thorough validation of isolation voltages and thermal characteristics.