LEM LKSR Current Transducers
LEM LKSR Current Transducers are comprised of high-precision current sensors designed for the accurate measurement of small DC, AC, and pulse currents ranging from 1.5Arms to 50Arms nominal, all with galvanic isolation. These sensors ensure reliability with key features such as low offset drift for stable, high-accuracy measurements, integrated primary conductors for simplified design and enhanced performance, and a wide operating temperature range from -40°C to +105°C.
The LKSR Series is engineered with a unique 4-pin primary footprint, extending creepage and clearance distances to 9.9mm for superior insulation and safety. It also features reference access on an additional pin for improved usability and seamless compatibility with CKSR sensors, ensuring broad applicability in industrial environments.
Built on closed-loop Hall-effect technology, LKSR sensors deliver precision comparable to Fluxgate technology but with significant cost advantages. This makes the LEM LKSR Series an optimal choice for industrial applications requiring high accuracy, reliability, and cost-effectiveness.
Features
- Voltage output
- Unipolar supply voltage
- Compact design for PCB mounting in various footprints
- With aperture and/or integrated primary conductors
- Compact design
- High overall accuracy at +105°C up to 2%
- Very low offset drift
- Very good dv/dt immunity
- Fast response time < 0.4µs
- CKSR 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 applications
- Uninterruptible Power Supplies (UPS)
- Switched Mode Power Supplies (SMPS)
- Power supplies for welding applications
- Solar inverters
Connection
Dimensions
Related Current Transducers
LEM CKSR Board Mount Current Transducers
For precise electronic measurement of DC, AC, and pulsed currents, ranging from 1.5A to 75A RMS.