ABB LD SYN-101 3BHE005555R0101

The ABB LDSYN-101 (3BHE005555R0101) is a high-precision synchronization and communication control board designed for ABB’s UNITROL 6000 series excitation systems and Symphony Plus / Advant DCS platforms. Its core function is to serve as the “timing eye” of the excitation system, precisely measuring three-phase synchronization voltage signals from the generator and grid, managing phase alignment for safe grid connection, and providing high-precision time synchronization across the control network.