QS20.244 24V, 20A, SINGLE PHASE INPUT POWER SUPPLY 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 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 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. ORDER NUMBERS DC 24V 24 - 28V 20 – 17A 30 – 26A Output power 480W 720W Output ripple < 100mVpp Input voltage AC 200-240V Mains frequency 50-60Hz AC Input current 4.45A Power factor 0.5 AC Inrush current typ. 40A peak Efficiency 94.5% Losses 28.3W Temperature range -25°C to +70°C Derating 12W/°C Hold-up time typ. 46ms Dimensions 70x124x127mm continuous for typ. 4s continuous for typ. 4s 20Hz to 20MHz ±15% ±6% at 230Vac at 230Vac at 230Vac at 230Vac at 230Vac operational +60 to +70°C at 230Vac WxHxD Power Supply Wall mount bracket Redundancy module Redundancy module Oct. 2013 / Rev. 2.2 DS-QS20.244-EN All parameters are specified at 24V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0

QS20.244 24V, 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...

QS20.244 24V, 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. The power supply is suitable for application, where a power factor correction according to EN 61000-3-2 is not needed. See also section 14. 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...

QS20.244 24V, 20A, SINGLE PHASE INPUT 3. AC-INPUT AC input AC input range Input current Power factor *) Crest factor **) Start-up delay Rise time Turn-on overshoot Allowed voltage L or N to earth Input frequency Turn-on voltage Shut-down voltage suitable for TN-, TT- and IT mains networks continuous operation < 500ms continuous, IEC 62103 ±6% steady-state value, see Fig. 3-1 steady-state value, see Fig. 3-1 *) The power factor is the ratio of the true (or real) power to the apparent power in an AC circuit. **) The crest factor is the mathematical ratio of the peak value to RMS value of the input...

QS20.244 24V, 20A, SINGLE PHASE INPUT 4. DC-INPUT Do not operate the power supply with DC-input voltage 5. INPUT INRUSH CURRENT An active inrush current circuitry (NTC and fixed resistor which are bypassed by an IGBT after the inrush is completed) limits the input inrush current after turn-on of the input voltage. The charging current into EMI suppression capacitors is disregarded in the first microseconds after switch-on. Inrush current Inrush energy over entire temperature range; cold start over entire temperature range; cold start over entire temperature range; cold start Fig. 5-1 Input inrush...

QS20.244 24V, 20A, 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 20A 20Hz to 20MHz, 50Ohm continuously available at 24V, see Fig. 6-1 continuously available at 28V, see Fig. 6-1 short term available BonusPower® *), at 24V, for typical 4s, see Fig. 6-1 short term available...

□innefUSIDfU Q-Series 24V, 20A, 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 typ. from 24V to 20V at 40A for 50ms, resistive load typ....