LF 205-P

Power Line Filter Modules Overview

The LEM LF 205-P is a closed-loop Hall effect current transducer designed for the precise electronic measurement of DC, AC, and pulsed currents. It provides galvanic isolation between the primary conductor and secondary circuitry. The device features a nominal primary current (Ipn) of 200 A with a bidirectional range of ±200 A. It delivers a proportional current output with a sensitivity of 100 mA/A. The sensor operates on a dual supply voltage ranging from +/- 12 V to +/- 15 V. It maintains an operating temperature range of -40°C to +85°C and offers excellent accuracy with a fast response time.

Power Line Filter Modules Feature Summary

• Closed-loop Hall effect technology ensures high precision and linearity
• Galvanic isolation between primary and secondary circuits for safety
• Proportional current output suitable for direct interface with control systems
• Compact PCB mounting design for space-constrained applications

Power Line Filter Modules Applications

• Motor drive current monitoring
• Switching power supply feedback loops
• Battery management systems
• Inverter and converter control

Power Line Filter Modules Procurement Notes

Verify the specific suffix code (e.g., /SP1) against the required pinout and mounting configuration. Confirm that the dual supply voltage requirements match the system design. Ensure the primary aperture size accommodates the target conductor diameter. Check for RoHS compliance status if required by the assembly process. Validate the operating temperature range against the environmental conditions of the final application.

Power Line Filter Modules Selection Notes

Select this model when high accuracy and fast dynamic response are critical for current sensing. The closed-loop architecture minimizes errors caused by temperature drift and magnetic field variations compared to open-loop sensors. Consider the 200 A nominal rating to ensure adequate headroom for peak load currents. The current output interface simplifies signal conditioning requirements in the downstream electronics.

Power Line Filter Modules Part Context

The LF series represents LEM's line of high-performance closed-loop current transducers. These devices utilize fluxgate or Hall effect principles combined with compensation coils to achieve zero-flux operation. This technology allows for accurate measurement of complex waveforms including DC components and high-frequency pulses. The LF 205-P is part of this established family known for reliability in industrial and automotive environments.

Power Line Filter Modules Replacement Considerations

Direct replacements may include other LEM LF series models with similar current ratings and output types. Verify mechanical dimensions and pin compatibility before substitution. Cross-reference with competitors offering closed-loop Hall effect sensors with equivalent 200 A capacity and current output signals.