CPS20.121 12V, 30A, SINGLE PHASE INPUT POWER SUPPLY AC 100-240V Wide-range Input Width only 65mm Efficiency up to 92.6% Excellent Partial Load Efficiency Safe HiccupPLUS Overload Mode Easy Fuse Breaking due to High Overload Current (typ. 120A for 15ms) Active Power Factor Correction (PFC) Minimal Inrush Current Surge Full Power Between -25°C and +60°C DC-OK Relay Contact Current Sharing Feature for Parallel Use 3 Year Warranty GENERAL DESCRIPTION SHORT-FORM DATA The Dimension C-Series are cost optimized power supplies without compromising quality, reliability and performance. The C-Series is part of the DIMENSION power supply family. The most outstanding features of CPS20.121 are the high efficiency, electronic inrush current limitation, active PFC, wide operational temperature range. The small size is achieved by a synchronous rectification and further technological design details. Output voltage Adjustment range Output current The C-Series includes all the essential basic functions. Additionally, the CPS20.121 can deliver about 4 times the nominal output current for 15ms which helps to trip fuses on faulty output branches. High immunity to transients and power surges as well as low electromagnetic emission, a DC-OK relay contact and a large international approval package for a variety of applications makes this unit suitable for nearly every situation. ORDER NUMBERS Power Supply Wall mount bracket Side mount bracket Redundancy module Redundancy module Redundancy module Marine, pending May 2013 / Rev. 1.2 DS-CPS20.121-EN All parameters are specified at 12V, 30A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com Phone +49 89 9278 0

CPS20.121 12V, 30A, 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...

CPS20.121 12V, 30A, SINGLE PHASE INPUT 1. INTENDED USE This device is designed for installation in an enclosure and is intended for the general professional 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 (pending), 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...

□innefUSIOfU C-Series 12V, 30A, SINGLE PHASE INPUT suitable for TN-, TT- and IT mains networks continuous operation short term or with output derating (1 %/V) or with reduced ambient temperature, see Fig. 15-1, Allowed voltage L or N to earth max. 300Vac Input frequency Turn-on voltage Shut-down voltage steady-state value at 7.5A load, see Fig. 3-1 steady-state value at 15A load, see Fig. 3-1 steady-state value at 30A load, see Fig. 3-1 Rise time typ. 72ms 72ms 72ms at 12V, 30A const, current load, OmF load capacitance, load, 30mF load capacitance, *) The power factor is the ratio of the true...

□innefUSIOfU C-Series 12V, 30A, SINGLE PHASE INPUT Fig. 3-3 Input current vs. output load at 12V Fig. 3-4 Power factor vs. output load at 12V Do not operate this power supply with DC-input voltage. I 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 charging current into EMI suppression capacitors is disregarded in the first microseconds after switch-on. Inrush current*' Inrush energy*: typ. 11 Apeak 9APeak 7Apeak temperature independent Fig. 5-1 Typical input inrush current...

CPS20.121 12V, 30A, SINGLE PHASE INPUT 6. OUTPUT Output voltage Adjustment range Ripple and noise voltage Output current Output power Factory settings Line regulation Load regulation Overload behaviour Short-circuit current Output capacitance *) **) guaranteed at clockwise end position of potentiometer ±0.2%, at full load, cold unit, in “single use” mode ±0.2%, 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 30A; see Fig. 6-1 in “parallel use” mode: static value, 0A 30A, see Fig. 6-2 20Hz to 20MHz,...

□innefUSIOfU C-Series 12V, 30A, SINGLE PHASE INPUT Fig. 6-1 Output voltage vs. output current, Output Voltage (Single Use, typ.) Fig. 6-2 Output voltage in "parallel use" Output Voltage (Parallel Use, typ.) Output Current Fig. 6-3 Short-circuit on output. Hiccup1*"5 mode, typ. Short -circuit Fig. 6-4 Dynamic overcurrent capability, typ. Output Voltage (dynamic behavior, < 15ms) All parameters are specified at 12V, 30A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.

□innefUSIOfU C-Series 12V, 30A, SINGLE PHASE INPUT Hold-up Time Fig. 7-1 Hold-up time vs. input voltage Fig. 7-2 Shut-down behavior, definitions Hold-up Time Input Voltage Zero Transition Hold-up Time j 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 As soon as the output voltage reaches 90% of the adjusted output voltage level. Contact opens As soon as the output voltage dips more than 10% below the adjusted output...

CPS20.121 12V, 30A, SINGLE PHASE INPUT 9. EFFICIENCY AND POWER LOSSES Efficiency Average efficiency*) Power losses The average efficiency is an assumption for a typical application where the power supply is loaded with 25% of the nominal load for 25% of the time, 50% of the nominal load for another 25% of the time, 75% of the nominal load for another 25% of the time and with 100% of the nominal load for the rest of the time. Fig. 9-1 Efficiency vs. output current at 12V, typ. Fig. 9-2 Losses vs. output current at 12V, typ. Power Losses Output Current Fig. 9-3 Efficiency vs. input voltage at 12V,...