This document describes the features and characteristics of the 450-550 Watts 12V DS450-3/DS550-3 Distributed Power System and 850 Watts 12V DPS. It includes active power factor correction, EN61000-3-2 harmonic compliance, active AC inrush control, and more.
The DS450-3 and DS550-3 are 12 V distributed power supplies delivering 450 W to 550 W of total output power. They accept a wide AC input range and include features such as active power‑factor correction, hot‑plug capability, and built‑in fan control.
The manual details electrical specifications, connector pin‑outs, mechanical dimensions, environmental limits, and compliance information, along with troubleshooting LEDs and I²C status signals.
| Input Voltage Range | 90 V – 264 V AC |
|---|---|
| Input Frequency | 47 Hz – 63 Hz, single phase |
| Efficiency at Full Load | 84 % typical |
| Power Factor | 0.99 typical |
| Main DC Output Voltage | +12 Vdc |
| Stand‑by Voltage | +3.3 Vsb |
| Operating Temperature | -10 °C to 50 °C |
| Storage Temperature | -40 °C to +70 °C |
| Humidity Range | 20 % – 90 % RH, non‑condensing |
| MTBF (Demonstrated) | 400 k hrs at full load, 40 °C |
The unit operates from 90 V to 264 V AC input.
It achieves about 84 % efficiency at full load.
Yes, it supports hot‑plug operation with over‑voltage protection up to 13.5 V–15 V on the +12 V output.
Both models provide a +3.3 V standby output.