POWER SUPPLY • • • • • • • • • • • • 3AC 380-480V Wide-range Input 2-Phase Operation also Possible Efficiency up to 95% Width only 65mm 150% Peak Load Capability Active Power Factor Correction PFC Active Input Transient Filter Full Power Between -25°C and +60°C Minimal Inrush Current DC-OK Relay Contact Quick-connect Spring Clamp Terminals 3 Year Warranty 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 Large power reserves of 150% 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 emission makes usage in nearly every environment possible. The integrated output power manager and virtually no input inrush current make installation and usage simple with no jumpers and switches necessary. 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. 3. ORDER NUMBERS Power Supply Accessory DC 24V 24-28V 20A 30A Output power 480W 720W Output ripple < 100mVpp Input voltage AC 380-480V Mains frequency 50-60Hz AC Input current 0.79 / 0.65A Power factor 0.94 / 0.95 AC Inrush current typ. 3A peak Efficiency 95.0 / 94.8% Losses 25.3 / 26.4W Temperature range -25°C to +70°C Derating 12W/°C Hold-up time typ. 22 / 22ms Dimensions 65x124x127mm 24-28V Standard unit Conformal coated unit Wall mount bracket Side mount bracket Decoupling module Buffer unit Apr. 2007 / Rev. 1.1 DS-QT20.241-EN All parameters are specified at 24V, 20A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0

INTENDED USE The power supply shall only be installed and put into operation by qualified personnel. This power supply 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 device in aircraft, trains and nuclear equipment, where malfunctioning of the power supply may cause severe personal injury or threaten human life. 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...

□innefUSIOfU Q-Series 24V, 20A, THREE PHASE INPUT AC input nom. 3AC 380-480V Wide-range input, TN-, TT-, IT-Mains, see Fig. 5-1 Consult factory if one phase is earthed. AC input range min. 3x 323-552Vac Continuous operation min. 3x 280-323Vac Full power for 200ms, no damage between 0 and 280Vac Turn-on voltage typ. 3x 263Vac Steady-state value, see Fig. 5-1 Shut-down voltage typ. 3x 242Vac Steady-state value, see Fig. 5-1 Input current Power factor *) typ. 0.79A 0.65A At 24V, 20A, all three phases equal voltage Start-up delay Rise time Turn-on overshoot *) The power factor is the ratio of the...

□innefUSIOfU Q-Series 24V, 20A, THREE PHASE INPUT The QT20 series shall not be used with a DC-input voltage without consulting PULS. Check QTD20.241 for DC-input voltage, (special version for intermediate bus systems, drive systems) I 7. INPUT INRUSH CURRENT_ An active inrush limitation circuitry limits the input inrush current after turn-on of the input voltage and after short input voltage interruptions. The charging current into EMI suppression capacitors is disregarded in the first microseconds after switch-on. peak peak Fig. 7-1 Input inrush current, typical behavior Upper curve: Medium...

8. OUTPUT Output voltage Adjustment range Factory setting Line regulation Load regulation Ripple and noise voltage Output capacitance Guaranteed, multi turn potentiometer At clockwise end position of potentiometer ±0.2%, at full load, cold unit 320 to 552Vac Static value, 0A 20A 0A 20Hz to 20MHz, 50Ohm The energy of the bulk capacitor on the input side will be transferred to the output to supply short load peaks. Continuous power capability Output current Output power Short-circuit current At 24V, see Fig. 8-1 At 28V, see Fig. 8-1 24V, continuous 28V, continuous Load impedance 50mOhm, see Fig....

□innefUSIOfU Q-Series 24V, 20A, THREE PHASE INPUT Fig. 8-1 Output voltage vs. output current, typ. Output Voltage Output Current! Fig. 8-2 Bonus time vs. output power Bonus Time Output Power Fig. 8-3 BonusPower® recovery time Power <150% / Power Manager I Bonus i Recovery Time i Time I i Bonus Power disabled i Bonus Power® is available as soon as power comes on and immediately after the end of an output short circuit. Fig. 8-4 BonusPower® after input turn-on Fig. 8-5 BonusPower® after output short All parameters are specified at 24V, 20A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time...

□innefUSIOfU Q-Series 24V, 20A, THREE PHASE INPUT Hold-up Time Fig. 9-1 Hold-up time vs. input voltage Fig. 9-2 Shut-down behavior, definitions Hold-up Time Input Voltage ! Zero Transition Hold-up Time I 10. 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 which is connected in parallel to the power supply output. Contact closes As soon as the output voltage reaches the adjusted output voltage. Contact opens As soon as the output voltage dips more than 10% below the adjusted output...

□innefUSIOfU Q-Series 24V, 20A, THREE PHASE INPUT I 11. EFFICIENCY AND POWER LOSSES Power losses Fig. 11-1 Efficiency vs. output current at 24V Fig. 11-3 Efficiency vs. input voltage, 24V, 20A Fig. 11-2 Losses vs. output current at 24V Power Losses Fig. 11-4 Losses vs. input voltage, 24V, 20A Power Losses All parameters are specified at 24V, 20A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.