Automotive traction inverters are getting more and more compact, and more and more powerful. Limited space, cross talk from busbars getting closer, noise caused by high voltage fast switching are all challenges that the HSTDR is able to address. While traditional C-core sensors are rather bulky because they need a large aperture to slide onto complex busbars, the new LEM HSTDR with integrated busbar can be placed easily anywhere in the inverter with a package up to 75% smaller. Despite its small size, the LEM HSTDR current sensor is able to measure accurately up to 1500A without saturation. Also, the core design with small airgap offers an excellent protection against cross talk.
LEM HSTDR is the latest development in the HSxDR family.
Its design with an integrated busbar allows to shrink the aperture of the magnetic core and to significantly reduce size and weight of the sensor compared to a traditional C-core sensor.
The HSTDR is only 29x21x12mm for 27g while it can measure up to 1500 A with an excellent immunity against cross talk thanks to an air gap comparable to C-shape cores.
- Optimized footprint, weight and cost
- Easy to integrate thanks to a design with integrated busbar
- A fully calibrated package (core + busbar + sensing element) for a faster time to market
- Great performance (measuring range increased +50% compared to LEM HSNDR, best in class accuracy)