New series of power line chokes for high voltage applications

Würth Elektronik’s WE-TPB HV series of current-compensated, three-phase, power line chokes have been developed for high-voltage applications. This new series guarantees a rated voltage up to 760VAC, which is 70% more than that offered by comparable products already available on the market. This new series was made possible by an innovative, patented design using a novel plastic casing, separating strip, and grid plate. The toroids used can be made both of MnZn ferrite material as well as of nanocrystalline material; thus, making it possible to achieve very high insertion losses even in broadband applications. All insulation materials used in these products are UL94-V0 listed. As a measure to enhance the stability on the PCB, the chokes can also be fixed in place with a tapping screw. Typical applications for this series include frequency inverters and high-performance charging stations.