QS20.481 48V, 10A, SINGLE PHASE INPUT POWER SUPPLY AC 100-240V Wide-range Input Width only 82mm Efficiency up to 94.3% 150% (720W) Peak Load Capability Safe HiccupPLUS Overload Mode Easy Fuse Tripping due to High Overload Current Active Power Factor Correction (PFC) Negligible low Inrush Current Surge Short-term Operation down to 60Vac and up to 300Vac Full Power Between -25°C and +60°C DC-OK Relay Contact Quick-connect Spring-clamp Terminals 3 Year Warranty GENERAL DESCRIPTION SHORT-FORM DATA The most outstanding features of this Dimension QSeries DIN-rail power supply are the high efficiency and the small size, which are achieved by a synchronous rectification and further novel design details. Output voltage Adjustment range Output current 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. High immunity to transients and power surges as well as low electromagnetic emission makes usage in nearly every environment possible. The integrated output power manager, a wide range input voltage design and virtually no input inrush current make installation and usage simple. Diagnostics are easy due to the dry DC-ok contact, a green DC-ok LED and red overload LED. 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. ORDER NUMBERS DC 48V 48 - 55V 10 – 8.7A 15 – 13.1A Output power 480W 720W Output ripple < 100mVpp Input voltage AC 100-240V Mains frequency 50-60Hz AC Input current 4.56 / 2.48A Power factor 0.95 / 0.90 AC Inrush current typ. 9 / 7A peak Efficiency 92.8 / 94.3% Losses 37.2 / 29.0W Temperature range -25°C to +70°C Derating 12W/°C Hold-up time typ. 32 / 51ms Dimensions 82x124x127mm Power Supply Wall mount bracket Side mount bracket Redundancy module Oct. 2013 / Rev. 2.2 DS-QS20.481-EN All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0

QS20.481 48V, 10A, 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...

QS20.481 48V, 10A, 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....

QS20.481 48V, 10A, 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 Input current Power factor *) Crest factor **) Start-up delay Rise time Turn-on overshoot suitable for TN-, TT- and IT mains networks continuous operation full power for 200ms, no damage between 0 and 85Vac < 500ms continuous, IEC 62103 ±6% steady-state value, see Fig. 3-1 steady-state value, see Fig. 3-1 dynamic value AC 120V 4.56A 0.95 1.7 610ms 80ms 100ms 100mV *) The power factor is the ratio of the true (or real) power to the apparent...

QS20.481 48V, 10A, SINGLE PHASE INPUT 4. DC-INPUT DC input DC input range DC input current Allowed Voltage L/N to Earth Turn-on voltage Shut-down voltage 110Vdc, at 48V, 10A IEC 62103 steady state value steady state value Instructions for DC use: a) Use a battery or similar DC source. For other sources contact PULS b) Connect +pole to L and –pole to N. c) Connect the PE terminal to an earth wire or to the machine ground. 5. INPUT INRUSH CURRENT An active inrush limitation circuit limits the input inrush current after turn-on of the input voltage and after short input voltage interruptions. The...

QS20.481 48V, 10A, SINGLE PHASE INPUT 6. OUTPUT Output voltage Adjustment range Output power Factory setting Line regulation Load regulation Ripple and noise voltage Output current Short-circuit current Output capacitance BonusPower® time BonusPower® recovery time Overload behaviour guaranteed at clockwise end position of potentiometer ±0.2%, at full load, cold unit 60-300Vac static value, 0A 10A 20Hz to 20MHz, 50Ohm continuously available at 48V, see Fig. 6-1 continuously available at 55V, see Fig. 6-1 short term available BonusPower® *), at 48V, for typical 4s, see Fig. 6-1 short term available...

QS20.481 48V, 10A, SINGLE PHASE INPUT Peak current capability (up to several milliseconds) The power supply can deliver a peak current which is higher than the specified short term current. This helps to start current demanding loads or to safely operate subsequent circuit breakers. The extra current is supplied by the output capacitors inside the power supply. During this event, the capacitors will be discharged and causes a voltage dip on the output. Detailed curves can be found in chapter 22.2. Peak current voltage dips from 48V to 39V from 48V to 34V from 48V to 32V Fig. 6-1 Output voltage...

QS20.481 48V, 10A, SINGLE PHASE INPUT 7. HOLD-UP TIME Hold-up Time Fig. 7-1 Hold-up time vs. input voltage Zero Transition Input Voltage Output Voltage Hold-up Time Input Voltage Fig. 7-2 Shut-down behavior, definitions 8. DC-OK RELAY CONTACT This feature monitors the output voltage, which is produced by the power supply itself. It is independent of a back-fed voltage from a unit connected in parallel to the power supply output. Contact closes Contact opens As soon as the output voltage reaches the adjusted output voltage level. As soon as the output voltage dips more than 10% below the adjusted...