Technical Specifications AC input, high‑capacity redundant DC output. Operating temperature 0 ℃ to +60 ℃, storage temperature ‑40 ℃ to +85 ℃, non‑condensing relative humidity 5%‑95%. Multi‑level hardware protection for over‑voltage, over‑current and short‑circuit.
Functional Features Realizes AC‑DC power conversion and output filtering. Provides high‑capacity redundant DC power for rack internal hardware. Executes seamless channel switching during single‑channel fault occurrence. Front‑panel LED indicators reflect power‑on, channel active state and fault information. Built‑in self‑diagnosis monitors input voltage, output current and internal hardware status.
Application Scenarios Spare redundant power unit for large‑size ABB DCS rack. Applied in petrochemical and power plant high‑availability control cabinet maintenance.
Performance Parameters High‑capacity low‑ripple DC output. Fast non‑interrupt redundant channel switching. Stable continuous heavy‑load operation characteristic.
Material Composition Metal shielding housing. Multilayer glass‑fiber epoxy printed circuit board. High‑power conversion assemblies, redundant switch components and protection circuit. Input‑output wiring terminals and rack mounting accessories.
Structural Characteristics Large‑size rack‑mount power unit. Front panel with multi‑group status indicators. Power wiring terminals located on lower section. Rack fixing holes reserved.
Working Principle Two internal independent power channels convert AC input into DC output. Monitoring circuit compares working status of two channels continuously. When one channel appears abnormal, redundant switch circuit transfers load to the other healthy channel, maintaining continuous power supply for rack modules.
Installation Requirements Disconnect AC input power before replacement. Fasten PHARPS32200000 on rack designated position. Complete AC input and DC output wiring according to terminal marking. Restore power supply, measure DC output voltage value, simulate single‑channel fault and verify redundant switching function.
Usage Notes Guarantee cabinet ventilation to avoid over‑heating. Hot‑plug operation under powered condition is prohibited. Confirm output voltage conforms to rated specification after power‑on.
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