QS40.481 48V, 20A, SINGLE PHASE INPUT POWER SUPPLY AC 100-240V Wide-range Input Width only 125mm, Weight only 1.9kg 95.0% Full Load and Excellent Partial Load Efficiencies 50% BonusPower®, 1440W for up to 4s 55A High Peak Current for 10ms for Easy Fuse Tripping Safe HiccupPLUS Overload Mode Active PFC (Power Factor Correction) Negligible Low Input Inrush Current Surge Full Power Between -25°C and +60°C Current Sharing Feature for Parallel Use Internal Data Logging for Troubleshooting Included. Remote Control of Output Voltage DC-OK Relay Contact Shut-down Input ATEX and IECEx Approved 3 Year Warranty GENERAL DESCRIPTION SHORT-FORM DATA The most outstanding features of this Dimension QS40.481 DIN-rail power supply are the extremely high efficiency and the small size, which are achieved by a synchronous rectification, a bridgeless PFC circuit and additional unique design details. Output voltage Adjustment range Output current Large power reserves of 150% and built-in large sized output capacitors support the starting of heavy loads such as DC motors or capacitive loads. In many cases this allows the use of a unit from a lower wattage class which saves space and money. High immunity to transients and power surges as well as low electromagnetic emissions makes usage in nearly every environment possible. The integrated input fuse as well as the near zero input inrush current make installation and usage simple. Diagnostics are easy due to the DC-OK relay, a green DC-OK LED and the red overload LED. A large international approval package for a variety of applications makes this unit suitable for nearly every application. ORDER NUMBERS DC 48V nominal 48 - 54Vdc 20 – 17.8A continuous 30 – 26.7A short term (4s) Output power 960W continuous 1440W short term (4s) Output ripple < 150mVpp 20Hz to 20MHz Input voltage AC 100-240V -15%/+10% Mains frequency 50-60Hz ±6% AC Input current 8.6 / 4.5A at 120 / 230Vac Power factor 0.99 / 0.99 at 120 / 230Vac AC Inrush current 17 / 11A peak at 120 / 230Vac Efficiency 93.9 / 95.0% at 120 / 230Vac Losses 62.4 / 50.5W at 120 / 230Vac Temperature range -25°C to +70°C operational Derating 24W/°C +60 to +70°C between 85-90Vac see chapter 18 Hold-up time 27 / 27ms at 120 / 230Vac Dimensions 125x124x127mm WxHxD Weight 1900g / 4.2lb Power Supply Wall mount bracket Buffer unit Redundancy module Oct. 2014 / Rev. 1.2 DS-QS40.481-EN All parameters are specified at 48V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0

QS40.481 48V, 20A, SINGLE PHASE INPUT The information presented in this document is believed to be accurate and reliable and may change without notice. No part of this document may be reproduced or utilized in any form without permission in writing from the publisher. PE is the abbreviation for Protective Earth and has the same meaning as the symbol Earth, Ground This document uses the term “earth” which is the same as the U.S. term “ground”. To be defined, value or description will follow later. A figure displayed with the AC or DC before the value represents a nominal voltage with standard...

QS40.481 48V, 20A, SINGLE PHASE INPUT 1. INTENDED USE This device is designed for installation in an enclosure and is intended for the general use such as in industrial control, office, communication, and instrumentation equipment. Do not use this power supply in equipment, where malfunction may cause severe personal injury or threaten human life. This device is designed for use in hazardous, non-hazardous, ordinary or unclassified locations. 2. INSTALLATION REQUIREMENTS This device may only be installed and put into operation by qualified personnel. This device does not contain serviceable parts....

QS40.481 48V, 20A, SINGLE PHASE INPUT 3. AC-INPUT AC input AC input range Allowed voltage L or N to earth Input frequency Turn-on voltage Shut-down voltage External input protection suitable for TN, TT and IT mains networks continuous operation < 55°C ambient temperature continuously allowed > 55°C ambient temperature short term or with output derating according Fig. 18-1 min. 60-85Vac full power for up to 200ms min. 0-85Vac no damage to the unit min. 264-300Vac < 500ms max. 300Vac continuous, IEC 62103 nom. 50–60Hz ±6% typ. 80Vac steady-state value, load independent, see Fig. 3-1 typ. 74Vac...

□innefUSIOfU Q-Series 48V, 20A, SINGLE PHASE INPUT I 4. INPUT INRUSH CURRENT_ The power supply is equipped with an active inrush current limitation circuit, which limits the input inrush current after turn-on to a negligible low value. The input current is usually smaller than the steady state input current. Inrush current*' max. 25Apeak 22Apeak 16Apeak over entire temperature range; typ. 20APeak 17APeak 11 Apeak over entire temperature range; Inrush energy max. 5A2s 5A2s 5A2s over entire temperature range; *) The charging current into EMI suppression capacitors is disregarded in the first microseconds...

QS40.481 48V, 20A, SINGLE PHASE INPUT 6. OUTPUT Output voltage Adjustment range Ripple and noise voltage Output current Output power BonusPower® time BonusPower® recovery time Overload behavior Short-circuit current Output capacitance *) Line regulation Load regulation Factory setting guaranteed at clockwise end position of potentiometer ±0.2%, at full load, cold unit, in “single use” mode ±0.5%, at full load, cold unit, in “parallel use” mode at no load, cold unit, in “parallel use” mode 85-300Vac in “single use” mode: static value, 0A 20A, see Fig. 6-1 in “parallel use” mode: static value,...

□innefUSIOfU Q-Series Output voltage vs. output current in Output Voltage Adjustment Range Output Current 48V, 20A, SINGLE PHASE INPUT Fig. 6-2 Output voltage vs. output current in Output Voltage (Parallel Use, typ Adjustment Range Output Current Fig. 6-3 Short-circuit on output. Hiccup™"5 mode, typ. Short -circuit Fig. 6-4 Dynamic overcurrent capability, typ. Output Voltage (dynamic behavior, <10ms) Fig. 6-5 Bonus time vs. output power Bonus Time Output Power Fig. 6-6 BonusPower recovery time The BonusPower® is available as soon as power comes on and after the end of an output short circuit...