LEM is one of the market leader in providing innovative and high quality solutions for measuring electrical parameters. Its core products - current and voltage transducers - are used in a broad range of applications in drives & welding, renewable energies & power supplies, traction, high precision, conventional and green cars businesses.
"LEM’s strategy is to completely benefit from the intrinsic strengths of its core business, and to develop opportunities in existing and new markets with new applications," reveals the company’s corporate website.
LEM has production plants in Beijing (China), Geneva (Switzerland), Sofia (Bulgaria) and Tokyo (Japan). The company’s Automotive division specializes in developing and manufacturing current transducers for battery management and motor drive applications in cars, buses and trucks. Company representatives point out that by controlling the current in energy-intensive applications, LEM participates in the global effort to reduce overall energy consumption.
Some of the typical applications for automotive transducers include: Standard battery monitoring; Hybrid and EV battery pack current sensing; Fuel cell current control; DC/DC converters and AC/DC inverters; Hybrid and EV motor inverter drive; EPS and X-by-wire applications; Electric compressors for air conditioning.
LATEST issue 4/2020
The thermal characteristic of the protected object is crucial; for example the electric cable, the wiring harness or the semiconductor switch in the connected control unit. Instead of safety fuses or electro-magnetically triggered mechanical contacts, electronic fuses contain semiconductor switches along with their control logic including protective and diagnostic functions