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The CUI Inc. VMS-550-58 is an AC/DC converter from the VMS-550 series, designed to provide a regulated 58 Vdc output. With a maximum output power of 550 W under 21 CFM forced air cooling, it is suitable for a range of power supply applications. The converter accepts a universal input voltage of 90-264 Vac at 47-63 Hz, with a maximum input current of 6 A at 115 Vac and 3 A at 230 Vac.
Key electrical specifications include a typical efficiency of 92%, a power factor of 0.95 at full load, and a no-load power consumption of 0.7 W. The output features a ripple and noise of 580 mVp-p maximum, with line regulation of ±0.5% and load regulation of ±1%. The initial set point accuracy is ±1%, and the start-up delay time is 2 seconds with a rise time of 55 ms.
The converter includes an 8 A/250 V time delay input fuse. Inrush current is 45 A at 230 Vac cold start, and leakage current is 0.2 mA at 115 Vac and 0.4 mA at 230 Vac. Touch current is specified at 0.1 mA.
The output voltage is 58 Vdc.
The maximum output power is 550 W with 21 CFM forced air cooling.
The input voltage range is 90-264 Vac.
The typical efficiency is 92%.
The no-load power consumption is 0.7 W.