Technical Specifications Multi‑group isolated DC power output, optimized auxiliary power input circuit. Typical total power consumption 9.5 W. Operating temperature ‑10 ℃ to +60 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Conformal coated circuit board, input‑output isolation voltage 2000 V AC.
Functional Features Realizes high‑efficiency power conversion for excitation rack internal hardware. Provides stable multi‑channel isolated DC power output. Enhanced over‑voltage, over‑current and short‑circuit protection performance. On‑board LED displays power supply and fault status. Expanded hardware self‑diagnosis coverage. Improved EMC anti‑interference capability.
Application Scenarios Applied for upgrading replacement and spare‑part maintenance of generator excitation systems in power plants and industrial power stations. Mechanically interchangeable with UUD148AE01.
Performance Parameters Higher power conversion efficiency compared with previous version. Stronger overload tolerance under transient load change. Protection circuit responds fast under various electrical fault conditions.
Material Composition Multilayer glass‑fiber epoxy printed circuit board with optimized layout. High‑efficiency power conversion chips, protection components.
Structural Characteristics Plug‑in circuit board with identical mechanical outline as UUD148AE01. Board edge fitted with back‑plane connector and power wiring terminals. Reserved mechanical fixing holes. Weight approximately 0.76 kilogram.
Working Principle After power‑on, input auxiliary power goes through transformation, rectification, filtering and isolation processing. Multiple stable DC power outputs are provided to each control board via back‑plane bus.
Installation Requirements Fully cut off excitation cabinet all power sources before installation. Insert UUD148AE02 into corresponding slot and tighten fixing screws. Ensure connectors are fully locked. Restore power supply, inspect LED status and verify every output channel performance.
Usage Notes Implement anti‑static protection during handling. Avoid damage to conformal coating layer. Prohibit hot‑plug under powered condition. Verify input power parameter conforms to specification before commissioning.
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