LF 2005-S/SP21

Current Sensors Overview

The LF 2005-S/SP21 is a Hall Effect current sensor manufactured by LEM USA Inc. It provides closed-loop bidirectional measurement for AC, DC, and pulsed currents up to 2000A. The device ensures galvanic isolation between the primary high-power circuit and the secondary control circuit. It features a single channel configuration with a pass-through aperture design. The module operates on dual power supplies ranging from +/- 15V to +/- 24V. It delivers an analog output signal proportional to the measured current.

Current Sensors Feature Summary

• Closed-loop Hall Effect technology for high-precision current measurement
• Galvanic isolation between primary and secondary circuits
• Bidirectional capability for both positive and negative current flow
• Single pass-through aperture design for direct conductor insertion

Current Sensors Applications

• Motor drive systems
• Industrial power supply units
• AC/DC converters
• Uninterruptible power systems (UPS)

Current Sensors Procurement Notes

Verify the specific suffix SP21 against official LEM documentation to confirm pinout and mechanical dimensions. Ensure the procurement source is an authorized distributor to guarantee component authenticity. Check for any recent product lifecycle notices or obsolescence warnings before finalizing orders. Confirm that the required operating temperature range aligns with the standard industrial specifications provided in the datasheet.

Current Sensors Selection Notes

Select this model when measuring high-current loads up to 2000A with strict isolation requirements. The closed-loop architecture offers superior linearity compared to open-loop alternatives. Consider the physical aperture size to ensure compatibility with the primary busbar or cable diameter. Evaluate the need for bidirectional sensing if the application involves regenerative braking or reverse power flow scenarios.

Current Sensors Part Context

This component belongs to the LF series of current transducers from LEM. These sensors are designed for robust industrial environments requiring reliable electrical isolation. The series typically utilizes fluxgate or Hall effect technologies depending on the specific model variant. This particular unit represents a high-capacity solution within the brand's portfolio for heavy-duty power electronics applications.

Current Sensors Replacement Considerations

Consult official LEM cross-reference guides for verified substitutes. Generic equivalents may not match the precise isolation voltage or bandwidth characteristics. Verify that any replacement maintains the same pin configuration and mounting style to avoid PCB redesign efforts.