XT40.721 Puls AC/DC Power Supplies

PULS XT40.721 is a power supply unit part of the X-series, designed to function as an AC/DC PSU/converter with a semi-regulated 25% power reserve and a DC-OK relay contact output. It operates on a supply voltage of 3x360-440Vac (with nominal values of 380Vac, 400Vac, 415Vac; 47-63Hz), featuring a turn-ON voltage of 3 x 325Vac and a shutdown voltage of 3 x 295Vac. The unit is encased in an aluminium housing, measures W96mm x H124mm x D159mm, and uses screw-clamp connections for installation. It is rated for a current of 13.3A at 72Vdc and is designed for DIN rail mounting in a 3-phase (3AC) network. The XT40.721 can operate in ambient air temperatures ranging from -25 to +70°C. It has a peak inrush current consumption of 4A (at 3x400Vac input), a rated power of 24W/+60°C...+70°C (derating) to 960W (at 72Vdc) and 1200W for typical 15s. Protection features include output overvoltage protection (91.1Vdc max.), active input inrush current limiter, and overload/short-circuit current protection. It supports series operation but not parallel operation for increased output power, though 1+1 redundancy for higher system availability and reliability is possible. The unit is resistant to back-feeding loads up to 87.9V. It boasts an efficiency of 0.955 (with 3x400Vac input), a 400ms start-up delay, and a rise time of 40ms to 70ms depending on load capacitance. The output voltage is fixed at 72Vdc with a 1.4V turn-ON overshoot, a hold time of 3.6ms at 3x400Vdc input, power dissipation/losses of 45.2W (at 3x400Vdc input; full output load), an output stage capacitance of 4050 µF, and a ripple of 3000mVpp (20Hz...2KHz; 50Ω).

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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