QS40.484

PULS QS40.484 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 48Vdc and 17.8A at 54Vdc, with a power derating applicable from 24W at +60°C to +70°C. Connection is facilitated through screw-clamp connections, and it supports a supply voltage range of 180Vac to 264Vac, accommodating various nominal voltages within this range at a frequency of 47-63Hz. The QS40.484, part of the Q-series, measures 125mm in width, 124mm in height, and 127mm in depth, housed in an aluminium casing. It is designed for single-phase network operation and delivers a rated power of 960W, with a short-term capacity of 1440W for up to 4 seconds. The output voltage is adjustable between 48Vdc and 54Vdc. Protection features include output overvoltage protection and overload/short-circuit protection, with capabilities for series or parallel operation to increase output power. Efficiency is rated at 0.95 with a 230Vac input, and the unit exhibits a peak current consumption of 18A. Start-up and rise times are specified as 750ms and 18-35ms respectively, with a hold time of 30ms at 230Vac input. Power dissipation losses are detailed for both 230Vac and 120Vac inputs, and the electrical durability spans from 65,000 to 345,000 hours under various conditions. Ripple is maintained at 150mVpp across a 20Hz to 20MHz range, with an output stage capacitance of 3700µF.