LF 505-S

Current Sensors Overview

The LEM LF 505-S is a high-density closed-loop Hall effect current transducer designed for the electronic measurement of DC, AC, and pulsed currents up to 500A. It provides galvanic isolation between the primary high-power circuit and secondary control electronics. The device features a ±15V to 24V supply voltage range with a maximum supply current of 124mA. Key performance metrics include a frequency response of DC to 100kHz, a response time of 1µs, linearity of ±0.1%, and accuracy of ±0.6%. It operates within a temperature range of -40°C to 70°C and utilizes a base-mounted module package.

Current Sensors Feature Summary

• Closed-loop Hall effect technology ensures high precision and fast dynamic response for accurate current monitoring.
• Galvanic isolation separates high-voltage primary circuits from low-voltage secondary control systems for safety.
• Bidirectional sensing capability allows detection of both positive and negative current flows.
• Base-mounted module construction facilitates secure installation in industrial power applications.

Current Sensors Applications

• Motor drive inverters
• Uninterruptible power supplies (UPS)
• Welding equipment
• Industrial automation controls

Current Sensors Procurement Notes

Verify the specific suffix designation, such as SP27 or SP13, to ensure correct packaging and pin configuration compatibility. Confirm RoHS compliance status and REACH regulatory adherence prior to integration. Check component availability as the part may be designated as not recommended for new designs. Validate supply voltage requirements against system specifications to prevent operational errors.

Current Sensors Selection Notes

Select this model for applications requiring precise measurement of high-current DC, AC, or pulsed signals up to 500A. Ensure the operating environment stays within the specified -40°C to 70°C temperature range. Verify that the required bandwidth meets the 100kHz frequency limit. Consider the physical dimensions and base-mounting style for mechanical fit within the target enclosure.

Current Sensors Part Context

The LF 505-S belongs to the LF series of current transducers manufactured by LEM USA Inc. This series is engineered for robust performance in demanding power electronics environments. The component serves as a critical interface for feedback control loops in high-power conversion systems, providing reliable signal transmission across isolated boundaries.

Current Sensors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official manufacturer resources for potential obsolescence management or direct replacements within the LF series family.