LF 310-S/SP10

Current Sensors Overview

The LF 310-S/SP10 is a closed-loop Hall effect current transducer designed for bipolar and insulated current measurement up to 500 A. It features a nominal primary current of 300 A with a secondary output signal of 150 mA. The device operates on a dual supply voltage ranging from +/- 15 V to +/- 24 V. It provides a frequency response from DC to 100 kHz and exhibits a linearity of 0.15%. The unit supports single pass-through installation and includes an internal fuse for protection.

Current Sensors Feature Summary

• Closed-loop Hall effect technology ensures high precision and fast dynamic response
• Bipolar measurement capability allows detection of both positive and negative currents
• Insulated design provides electrical isolation between primary and secondary circuits
• Compact module format facilitates easy panel mounting and integration

Current Sensors Applications

• Motor drive systems and inverter control
• Switch-mode power supplies (SMPS)
• Welding equipment current monitoring
• Battery management systems in electric vehicles

Current Sensors Procurement Notes

Verify the specific suffix SP10 against official LEM documentation to confirm pinout configuration and connector type. Ensure the operating environment remains within the specified temperature range. Confirm that the dual supply voltage requirements match the system design. Check for any regional compliance certifications required for the target market. Validate that the primary conductor aperture size accommodates the intended cable or busbar dimensions.

Current Sensors Selection Notes

Select this model when bipolar current sensing is required for AC or pulsed DC applications. The 300 A nominal rating suits medium-power industrial loads. Consider the 100 kHz bandwidth for high-frequency switching environments. Evaluate the 150 mA output compatibility with downstream ADC or amplifier inputs. Compare physical dimensions against available panel space constraints.

Current Sensors Part Context

The LF series represents LEM's line of closed-loop Hall effect sensors, offering superior accuracy compared to open-loop designs. The LF 310-S variant specifically targets applications requiring precise measurement of high-current signals with minimal phase shift. This component belongs to a family of modular transducers designed for robust industrial performance.

Current Sensors Replacement Considerations

Official substitutes include LF 310-S/SPA1 and LF 310-S/SP3. Verify mechanical footprint and pin assignment compatibility before substitution. Ensure the replacement part maintains the same 500 A maximum measurement limit and 300 A nominal rating.