XT40.722

PULS XT40.722 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 3x432-528Vac (440Vac / 480Vac / 500Vac / 525Vac nominal; 47-63Hz), with a turn-on voltage of 3 x 390Vac and a shutdown voltage of 3 x 355Vac. The unit's dimensions are W96mm x H124mm x D159mm, and it is encased in an aluminium housing with screw-clamp connections for installation. It has a rated current of 13.3A at 72Vdc and is designed for DIN rail mounting in a 3-phase (3AC) network. The ambient air temperature for operation ranges from -25 to +70°C. The XT40.722 has a net width of 96 mm and a peak current consumption of 4A max. inrush at 3x480Vac input. Its rated power is 24W/+60°C...+70°C (derating) 960W at 72Vdc and 1200W for a typical 15s, with protection functions including output overvoltage protection (91.1Vdc max.), active input inrush current limiter, and overload/short-circuit current protection. It is not designed for series or parallel operation to increase output power but supports 1+1 redundancy for higher system availability. The unit is resistant to back-feeding loads up to 87.9V. It has an efficiency of 0.955 at 3x480Vac input, with a 350ms start-up delay, 40ms rise time at nominal input and full current load without load capacitance, and 70ms with 13.3mF load capacitance. The output voltage is fixed at 72Vdc with a 1.4V turn-ON overshoot, a hold time of 3.6ms at 3x480Vdc input, power dissipation/losses of 45.2W at full output load, an output stage capacitance of 4050µF, and a ripple of 3000mVpp at 20Hz...2KHz with a 50Ω load.