QT20.241 Puls AC/DC Power Supplies

PULS QT20.241 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 rated current is 20A at 24Vdc and 17.5A at 28Vdc, with a power derating from 12W at +60°C to +70°C. Connection is facilitated through spring-clamp connections. The supply voltage accommodates a wide range with 3-phase input from 323Vac to 576Vac, including nominal voltages of 380Vac, 400Vac, 415Vac, 440Vac, 480Vac, 500Vac, and 525Vac at 47-63Hz, with a turn-ON voltage of 3 x 263Vac and a shutdown voltage of 3 x 242Vac. Its dimensions are W65mm x H124mm x D127mm, housed in aluminium for durability. The QT20.241 supports a 3-phase network, has a net width of 65mm, and provides 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, with a maximum output overvoltage protection set between 32Vdc (typical) and 35Vdc (maximum). It includes protection against overvoltage, overload, and short-circuit conditions, and allows for series or parallel operation to increase output power. The unit is designed to handle back-feeding loads up to 34V without malfunctioning. Efficiency rates are 0.948 with a 3x480Vac input and 0.95 with a 3x400Vac input. Peak inrush current consumption is capped at 10A, with a start-up delay between 290-350ms and a hold time of 22ms. Power dissipation losses are 26.4W and 25.3W for 3x480Vac and 3x400Vac inputs, respectively, under full load conditions. Electrical durability spans up to 345000 hours at 25°C with a 10A output and 3AC 400Vac input, with varying durability under different conditions. The ripple is maintained at 100mVpp across a 20Hz to 20MHz range, and the output stage capacitance is 950µF.

About the manufacturer: Puls is one of the manufacturers that offers AC/DC Power Supplies that you can order at Powermatic Associates site. Puls specializes in AC/DC power supplies, dedicating its efforts solely to the development of premium DIN rail power supplies. As a leading authority in power conversion, Puls distinguishes itself through focused engineering and an unwavering commitment to quality, positioning itself as the top leader in the field. This dedication ensures the highest standard in the industry, reflecting in every product they offer.

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