QS20.244

PULS QS20.244 is a power supply unit designed for DIN rail mounting, featuring AC/DC conversion with a 50% power reserve. It operates within an ambient air temperature range of -25 to +70°C and offers a design that includes a DC-OK relay contact output. The unit provides a rated current of 20A at 24Vdc and 17A at 28Vdc, with spring-clamp connections for secure and efficient connectivity. It supports a supply voltage range of 180Vac to 264Vac, with specific nominal values including 200Vac, 208Vac, 220Vac, 230Vac, and 240Vac at a frequency of 47-63Hz. The QS20.244, part of the Q-series, measures 70mm in width, 124mm in height, and 127mm in depth, housed in an aluminium casing. It is designed for single-phase networks and offers a rated power of 480W, with a short-term capacity of 720W for up to 4 seconds. The output voltage is adjustable between 24Vdc and 28Vdc, featuring protection functions against overvoltage, overload, and short-circuit conditions. It allows for series or parallel operation to increase output power, with a notable efficiency of 0.945 at 230Vac input. The unit's current consumption peaks at 52A max during inrush at 230Vac, with a start-up delay of 140ms, and offers a hold time of 46ms at 230Vac input. Power dissipation is calculated at 28.3W under full output load at 230Vac input. Its electrical durability spans up to 307,000 hours at 40°C with a 10A output. The QS20.244 also features a ripple of 100mVpp across a 20Hz to 20MHz range and an output stage capacitance of 8500µF.