LEM LESR Current Transducers
LEM LESR Current Transducers are designed for high-precision electronic measurement of DC, AC, and small pulse currents, with galvanic isolation for enhanced safety and reliability. These transducers feature low offset drift and integrated primary conductors to ensure consistent performance. The LESR current transducers provide greater flexibility for system integration and seamlessly integrate with CASR sensors, ensuring compatibility across a broad range of industrial applications. These transducers deliver performance at a lower cost by leveraging closed-loop Hall effect technology. Typical applications include AC variable speed and servo motor drives, static converters for DC motor drives, battery-supplied devices, and Uninterruptible Power Supplies (UPS).
Features
- Closed-loop multi-range current transducer
- Voltage output
- Unipolar supply voltage
- Compact design for PCB mounting in various footprints (3 or 4 primary pins with various layouts)
- With aperture and/or integrated primary conductors
- Compact design
- Up to 2% high overall accuracy at 105°C
- Very low offset drift
- Very good dv/dt immunity
- <0.4µs fast response time
- CASR footprint compatible
- Extended measuring range for unipolar measurement
- Reference pin with two modes: Ref IN and Ref OUT
Applications
- AC variable speed and servo motor drives
- Static converters for DC motor drives
- Battery-supplied devices
- Uninterruptible Power Supplies (UPS)
- Switched Mode Power Supplies (SMPS)
- Power supplies for welding
- Solar inverters
Dimension Diagram
