If you have questions about our products, Fill out the form below and we will answer any questions you have. Tips: Fields marked with*are required. ABB YYI107B 3ASD489306C421 LCI Sync Filter Card Introduction The ABB YYI107B (3ASD489306C421) is a specialized LCI (Load Commutated Inverter) Sync Filter Card used in ABB medium-voltage drive and LCI-based industrial converter systems. It is designed to ensure clean, stable, and accurate *Your Name: *Your Email: *Your Name: *Vdcode: Submit