Technical Specifications AC Input Range: 85 VAC to 264 VAC, 47‑63 Hz DC Input Range: 120 VDC to 370 VDC Rated Output Current: 5 A Galvanic Isolation: isolation between primary input and secondary output circuits Operating Temperature: -20 ℃ to +55 ℃ Weight: 0.38 kg Form Factor: embedded board assembly for standard control rack Protection Mechanism: over‑voltage, over‑current and over‑temperature protection
Functional Features Wide‑range dual AC‑DC input compatibility. Built‑in multi‑level fault protection for abnormal input condition. Galvanic isolation restrains interference coupling from power grid side. Stable DC power distribution for rack backplane bus. Compact embedded board design saves cabinet internal installation space.
Application Scenarios Internal power supply for ABB large control system rack assemblies. Power plant DCS cabinet rack power distribution. Substation automation control rack auxiliary power conversion. Heavy‑industry process control system rack internal power feeding.
Performance Parameters Maintain stable output voltage under full load variation. Quick protection trigger speed when over‑current or short‑circuit fault occurs. Low output ripple meets industrial control board power requirement.
Material Composition High‑current industrial printed circuit board. High‑voltage resistant power semiconductor components. Metal shielding structural parts. Flame‑retardant insulating material.
Structural Features Embedded board‑type assembly for rack internal installation. Backplane contact pins for power output delivery. Internal fixed mounting hole positions for rack installation. Integrated shielding structure for anti‑interference performance.
Working Principle External AC or DC power enters primary side filter and switching conversion circuit. Energy transfers across isolation barrier, and outputs regulated DC voltage to rack backplane bus. Real‑time monitoring circuit detects output state and activates protection action when fault condition is detected.
Installation Requirements Fix power board inside designated position of control rack. Ensure reliable contact between board pins and rack backplane. Follow terminal marking for input power wiring connection. Maintain cabinet ventilation to satisfy heat dissipation demand.
Usage Notes Check input power voltage before power‑on operation. No modification to original circuit layout of power board is permitted. Inspect board temperature during regular system maintenance. Isolate input power supply before disassembly work.
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