PULS

Power supply unit

DIMENSION series

X-series

AC/DC Power supply unit (PSU) / converter
25% power reserve

semi-regulated
25% power reserve
DC-OK rly. contact output

3x360-440Vac (380Vac / 400Vac / 415Vac nom.; 47-63Hz)
3 x 325Vac turn-ON voltage
3 x 295Vac shutdown voltage

"DC-OK" LED

3-phase (3AC)

20A (at 48Vdc)

24W/+60°C...+70°C (derating)
960W (at 48Vdc)
1200W (for typ. 15s)

48Vdc (fixed voltage)
1V turn-ON overshoot

3.1ms (buffer time at 3x400Vdc input)

screw-clamp connections

output overvoltage protection (57.2Vdc max.)
active (input inrush current limiter)
Overload / short-circuit current -- typ. 90A at load impedance <50mΩ
Series / parallel operation -- The XT40 Series of power supplies shall not be paralleled to increase the output power. Power supplies can be paralleled for a 1+1 redundancy to gain a higher system availability and reliability. Redundant systems require a certain amount of extra power to support the load in case 1 power supply unit fails. The simplest way is to put 2 X-Series power supplies in parallel which is called a 1+1 redundancy. In case 1 power supply unit fails the other 1 is automatically able to support the load current without any interruption.
Back-feeding loads max. 55.1V -- The unit is resistant and does not show malfunctioning when a load feeds back voltage to the power supply. It does not matter whether the power supply is ON or OFF. The absorbing energy can be calculated according to the built-in large sized output capacitor.

0.96 (3x400Vac input)

96 mm

DIN rail mounting

W96mm x H124mm x D159mm

Aluminium housing

-25...+70 °C

4A peak max. inrush (at 3x400Vac input)

(3x400Vdc input; full output load) 40 W

(3x400Vac input) 0.93

Commercialized

XT40481

(output stage) 7600 μF

CE marking
UL 508
UL 60950-1
IEC 60950-1 CB-Scheme
EAC Registration
EN 61000-6-1 Immunity for residential environments
EN 61000-6-2 Immunity for industrial environments
EN 61000-6-3 Emission for residential environments
EN 61000-6-4 Emission for industrial environments
EN 55011 / EN 55022 class B Disturbance characteristics

Alternative or Replacement for AC Transformer
3 Phase Input - DC Output
DIN-Rail Mountable
Width only 96mm
96% Efficiency
125% Peak Power Capability
No Input Inrush Current
Active Input Transient Blocker
Full power between -25°C and +60°C
Easy Failure Diagnostics
No Electrolytic Capacitors on Input Side
Cost Effective and Robust
3 Year warranty
The power supplies in the Dimension X-Series include a new and innovative concept for generating an isolated DC voltage from a three-phase mains system. A semi-regulated resonant converter enables a very compact design maximum efficiency and extremely competitive pricing with only a small compromise in the output voltage regulation output ripple and hold-up time. Weighing just 1.4kg the device provides 960 watts of continuous output power and an additional 25% power reserve for dynamic loads. The lightweight design along with compact dimensions facilitate straightforward mounting on DIN-rail. Primary use are applications involving supplies to motors valves and other load circuits with a high power consumption where an accurate output voltage regulation which is standard on traditional switched-mode power supplies is not required. Furthermore these switched-mode power supplies can often replace mains transformers with rectifiers.

(at 40°C; 20A output; 3AC 400Vdc input) 77000 hours
(at 40°C; 10A output; 3AC 400Vdc input) 15years / 131400 hours
(at 25°C; 20A output; 3AC 400Vdc input) 15years / 131400 hours

2500mVpp (20Hz...2KHz; 50Ω)

541000h (at 40°C; 3x400Vdc input; MTBF SN 29500 IEC 61709)
978000h (at 25°C; 3x400Vdc input; MTBF SN 29500 IEC 61709)
199000h (at 40°C; 3x400Vdc input; MTBF MIL HDBK 217F)
267000h (at 25°C; 3x400Vdc input; MTBF MIL HDBK 217F)

400ms start-up delay (3x400Vac input)
40ms rise time (nominal input; constant full current load; 0mF load capacitance)
70ms rise time (nominal input; constant full current load; 20mF load capacitance)