PULS

Power supply unit

DIMENSION series

Q-series

AC/DC Power supply unit (PSU) / converter
50% power reserve

50% power reserve
DC-OK rly. contact output

180Vac-264Vac (200Vac / 208Vac / 220Vac / 230Vac / 240Vac nom.; 47-63Hz)
77Vac turn-ON voltage
73Vac shutdown voltage (steady-state; no load)
53Vac shutdown voltage (dynamic value)

"DC-OK" LED

Single-phase (1AC)

20A (at 24Vdc)
17A (at 28Vdc)

480W
720W short-term (for 4s)

24Vdc-28Vdc (adjustable)
100mV turn-ON overshoot

46ms (buffer time at 230Vac input)

spring-clamp connections

output overvoltage protection (32Vdc typ. / 37Vdc max.)
active (input inrush current limiter)
Overload / short-circuit current -- min. 30A (max. 40A) load impedance <50mΩ
Series / parallel operation -- Power supplies can be paralleled to increase the output power. The output voltage of all power supplies shall be adjusted to the same value (+/-100mV) in Single use mode with the same load conditions on all units
Back-feeding loads max. 34V -- 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.

0.945 (230Vac input)

70 mm

DIN rail mounting

W70mm x H124mm x D127mm

Aluminium housing

-25...+70 °C

52A peak max. inrush (at 230Vac input)

(230Vac input; full output load) 28.3 W

(230Vac input) 0.5

Commercialized

QS20244

(output stage) 8500 μF

CE marking
UL 508
UL 60950-1
IEC 60950-1 CB-Scheme
Class I Div. 2 HazLoc
GL Marine
ABS Marine
EAC Registration
EN 61000-6-1 Immunity for residential environments
EN 61000-6-2 Immunity for industrial environments
EN 61000-6-4 Emission for industrial environments
EN 55011 / EN 55022 class B Disturbance characteristics

AC 200-240V Input
Width only 70mm
Efficiency up to 94.5%
Very Low No-load Losses
150% (720W) Peak Load Capability
Safe HiccupPLUS overload mode
Easy fuse tripping due to high overload current
Full power between -25°C and +60°C
DC-OK relay contact
Quick-connect Spring-clamp Terminals
3 Year warranty
The most outstanding features of this Dimension Q Series DIN-rail power supply are the high efficiency and the small size which are achieved by a synchronous rectification and further novel design details. The QS20.244 is a device for 200-240V non-public mains only. This supports regional applications and offers additional cost and space savings. If a wide-range unit with PFC is preferred choose the QS20.241. With short-term peak power capability of 150% and built-in large sized output capacitors these features help start motors charge capacitors and absorb reverse energy and often allow a unit of a lower wattage class to be used. Diagnostics are easy due to the dry DC-ok contact a green DC-ok LED and red overload LED. High immunity to transients and power surges as well as low electromagnetic emission makes usage in nearly every environment possible. Unique quick-connect spring-clamp terminals allow a safe and fast installation and a large international approval package for a variety of applications makes this unit suitable for nearly every situation.

(at 40°C; 20A output; 1AC 230Vac input) 62000 hours
(at 40°C; 10A output; 1AC 230Vac input) 307000 hours
(at 40°C; 20A output; 1AC 230Vac input) 188000 hours

100mVpp (20Hz...20MHz; 50Ω)

577000h (at 40°C; 230Vac input; MTBF SN 29500 IEC 61709)
946000h (at 25°C; 230Vac input; MTBF SN 29500 IEC 61709)
305000h (at 40°C; 230Vac input; MTBF MIL HDBK 217F)
409000h (at 25°C; 230Vac input; MTBF MIL HDBK 217F)

140ms start-up delay (230Vac input)
88ms rise time (nominal input; constant full current load; 0mF load capacitance)
95ms rise time (nominal input; constant full current load; 20mF load capacitance)