LTC 1000-S

Current Sensors Overview

The LEM USA Inc. LTC 1000-S is a closed-loop Hall effect current transducer designed for precise measurement of DC, AC, and pulse currents up to 1000A primary nominal value. It features galvanic isolation between the primary circuit and secondary output. The device operates within a temperature range of -40°C to +85°C and requires a supply voltage between ±14.25V and ±25.2V. Key electrical parameters include an accuracy of ±0.4%, linearity of ±0.1%, and a frequency response from DC to 100kHz. The secondary output provides a ratiometric current signal.

Current Sensors Feature Summary

• Galvanic isolation between primary and secondary circuits ensures safety and noise immunity in high-voltage environments.
• Closed-loop Hall effect technology enables accurate measurement of direct current, alternating current, and pulsed waveforms.
• Ratiometric output signal maintains proportionality relative to the supply voltage, simplifying interface design with control electronics.

Current Sensors Applications

• Industrial motor drives and variable frequency drives
• Power supply systems and switching mode power supplies
• Battery management systems in electric vehicles

Current Sensors Procurement Notes

Verify the specific suffix designation (e.g., SP25, SP26) against the manufacturer's official datasheet to confirm pinout configuration and output type compatibility. Ensure that the supply voltage requirements align with the system design before procurement. Confirm that the operating temperature range meets the environmental conditions of the intended application site.

Current Sensors Selection Notes

Select this model when high precision and wide bandwidth are required for currents up to 1000A. The ±0.4% accuracy and 100kHz frequency response make it suitable for dynamic load monitoring. Consider the physical dimensions and mounting style to ensure integration into the existing panel or PCB layout without interference.

Current Sensors Part Context

The LTC series represents LEM's closed-loop Hall effect transducers, offering superior performance compared to open-loop designs. These sensors utilize a compensation coil to nullify the magnetic field, providing high linearity and stability. The LTC 1000-S is part of this lineage, targeting applications demanding reliable isolation and fast transient response in industrial power electronics.

Current Sensors Replacement Considerations

Public confirmed substitute part numbers: None identified in available documentation.