XT40.361

PULS XT40.361 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 with a supply voltage of 3x360-440Vac (380Vac / 400Vac / 415Vac nominal; 47-63Hz), a turn-ON voltage of 3 x 325Vac, and a shutdown voltage of 3 x 295Vac. The unit is housed in an aluminium casing, measures W96mm x H124mm x D159mm, and features screw-clamp connections for installation. It is designed for DIN rail mounting in a 3-phase (3AC) network environment. The XT40.361 operates efficiently within an ambient air temperature range of -25 to +70°C, has a net width of 96 mm, and a peak inrush current consumption of 4A (at 3x400Vac input). It offers a rated current of 26.6A (at 36Vdc), with a rated power of 960W (at 36 Vdc) and 1200W for a typical 15s, adjusting to 24W/+60°C...+70°C (derating). Protection features include output overvoltage protection (42.5Vdc max.), active input inrush current limiter, and overload/short-circuit current protection—typically 115A at load impedance. The unit is not designed for series or parallel operation to increase output power but supports 1+1 redundancy for higher system availability. It can handle back-feeding loads up to 41.1V without malfunctioning. The XT40.361 boasts an efficiency of 0.955 (with 3x400Vac input), a 400ms start-up delay, and a rise time of 40ms (nominal input; constant full current load; 0mF load capacitance) to 70ms (nominal input; constant full current load; 27mF load capacitance). The fixed output voltage is 36Vdc with a 700mV turn-ON overshoot, and it offers a hold time of 2.6ms (buffer time at 3x400Vdc input). Power dissipation/losses are calculated at 45.2 W (3x400Vdc input; full output load), and the electrical durability is rated at 55000 hours (at 40°C; 26.6A output; 3AC 400Vdc input) to 156000 hours (at 25°C; 26.6A output; 3AC 400Vdc input). The output stage capacitance is 11100 µF, with a ripple of 2000mVpp (20Hz...2KHz; 50Ω).