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qt20.481 q-series 48v, 10a, t hree p hase i nput oct. 2006 / rev. 1.0 ds-qt20.481-en all parameters are specified at 48v, 10a, 3x400vac, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone + 49 89 9278 0 germany 1/23 p ower s upply ? 3ac 380-480v wide-range input ? 2-phase operation also possible ? efficiency up to 95.4% ? width only 65mm ? 150% peak load capability ? active power factor correction pfc ? active input transient filter ? full power between -25c and +60c ? minimal inrush current ? dc-ok relay contact ? quick-connect spring clamp terminals ? 3 year warranty 1. g eneral d escription 2. s hort - form d ata output voltage dc 48v adjustment range 48-55v output current 10a continuous, 48v 15a for typ. 4s, 48v output power 480w continuous, 48v 720w for typ. 4s, 48v output ripple < 100mvpp 20hz to 20mhz input voltage ac 380-480v 15% mains frequency 50-60hz 6% ac input current 0.79 / 0.65a at 3x400 / 480vac power factor 0.94 / 0.95 at 3x400 / 480vac ac inrush current typ. 3a peak efficiency 95.4 / 95.0% at 3x400 / 480vac losses 23.1 / 25.3w at 3x400 / 480vac temperature range -25c to +70c operational derating 12w/c +60 to +70c hold-up time typ. 22 / 22ms at 3x400 / 480vac dimensions 65x124x127mm wxhxd the most outstanding features of this dimension q- series din-rail power supply are the high efficiency and the small size, which are achieved by a synchronous rectification and further novel design details. 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 ma ke 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 n early every situation. 3. o rder n umbers 4. m arkings qt20.481 48-55v standard unit power supply accessory zm1.wall wall mount bracket ind. cont. e q . ul 508 ul 60950-1 class i div 2 zm14.side side mount bracket yr2.diode decoupling module uf20.481 buffer unit emc, lvd gl marine
qt20.481 q-series 48v, 10a, t hree p hase i nput oct. 2006 / rev. 1.0 ds-qt20.481-en all parameters are specified at 48v, 10a, 3x400vac, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone + 49 89 9278 0 germany 2/23 i ndex p age i ndex p age 1. general desc ription ............................................1 2. short-form data ..................................................1 3. order numb ers....................................................1 4. markings ..............................................................1 5. ac-input...............................................................3 6. dc-input...............................................................4 7. input inrush current ...........................................4 8. output .................................................................5 9. hold-up time.......................................................7 10. dc-ok relay contact ..........................................7 11. efficiency and power lo sses................................8 12. functional di agram.............................................9 13. front side and us er elements.............................9 14. terminals a nd wiring........................................10 15. reliabili ty ...........................................................10 16. emc....................................................................11 17. environm ent ......................................................12 18. protection fe atures ...........................................13 19. safety .................................................................13 20. dielectric s trength ............................................13 21. approval s...........................................................14 22. fulfilled stan dards............................................ 14 23. used sub stances ............................................... 14 24. physical dimensi ons and weight ..................... 15 25. installation and operat ion instructions .......... 15 26. accesso ry........................................................... 16 27. application notes............................................. 17 27.1. repetitive pulse load ing........................ 17 27.2. peak current capability ......................... 18 27.3. back-feed ing loads ................................ 18 27.4. charging of batter ies ............................. 18 27.5. output ci rcuit br eakers ......................... 19 27.6. external input protection....................... 20 27.7. 2-phase operatio n.................................. 20 27.8. parallel use to increase output power . 21 27.9. parallel use for redundancy.................. 21 27.10. daisy chainin g of outputs..................... 21 27.11. series operatio n..................................... 22 27.12. inductive and ca pacitive loads ............. 22 27.13. use in a tightly sealed enclosure .......... 22 27.14. mounting orientations .......................... 23 i ntended u se 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 instrume ntation equipment. do not use this de vice in aircraft, trains and nuclear equipment, where malfunctioning of the power supply may ca use severe personal injury or threaten human life. t erminology and a breviations pe and symbol pe is the abbreviation for p rotective e arth 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?. t.b.d. to be defined, value or description will follow later. ac 400v a figure displayed with the ac or dc before the value represents a nominal voltage with standard tolerances (usually 15%) included. e.g.: dc 12v describes a 12v battery disregardi ng whether it is full (13.7v) or flat (10v) as long as not otherwise stated, ac 380v and ac 400v parameters are valid at 50hz and ac 480v parameters are valid at 60hz mains frequency. 400vac a figure with the unit (vac) at the end is a momentary figure without any additional tolerances included. d isclaimer the information presented in this document is believed to be accurate and reliable and may change without notice.
qt20.481 q-series 48v, 10a, t hree p hase i nput oct. 2006 / rev. 1.0 ds-qt20.481-en all parameters are specified at 48v, 10a, 3x400vac, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone + 49 89 9278 0 germany 3/23 5. ac-i nput 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 for 2-phase operation see section 27.7 input frequency nom. 50?60hz 6% 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 3ac 400v 3ac 480v input current typ. 0.79a 0.65a at 48v, 10a, all three phases equal voltage see fig. 5-3 power factor *) typ. 0.94 0.95 at 48v, 10a, see fig. 5-4 start-up delay typ. 350ms 290ms see fig. 5-2 rise time typ. 30ms 30ms 0mf, 48v, 10a, see fig. 5-2 typ. 40ms 40ms 10mf, 48v, 10a, see fig. 5-2 turn-on overshoot max. 500mv 500mv see fig. 5-2 *) the power factor is the ratio of the true (or real ) power to the apparent power in an ac circuit. fig. 5-1 input voltage range fig. 5-2 turn-on behavior, definitions turn-on 323v rated input range v in p out 280v 3x 552vac full power for 200ms shut-down start-up delay rise time overshoot - 5% output voltage intput voltage fig. 5-3 input current vs. output load at 48v fig. 5-4 power factor vs. output load 10a 123456789 0 0.1 0.2 0.3 0.4 0.5 0.6 0.8a input current, typ. 0.7 output current 3 x 4 0 0 v a c 3 x 4 8 0 v a c power factor, typ. 12345678910 a 0.75 0.8 0.85 0.9 0.95 1.0 3x 400vac 3x 480vac output current
qt20.481 q-series 48v, 10a, t hree p hase i nput oct. 2006 / rev. 1.0 ds-qt20.481-en all parameters are specified at 48v, 10a, 3x400vac, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone + 49 89 9278 0 germany 4/23 6. dc-i nput the qt20 series shall not be used with a dc-input voltage wit hout consulting puls. check qtd20.241 for dc-input voltag e. (special version for intermedi ate bus systems, drive systems) 7. i nput i nrush c urrent an active inrush limitation circuitry lim its the input inrush current after turn- on of the input voltage and after short input voltage interruptions. the charging current into emi supp ression capacitors is disregarded in the first milliseconds after switch-on. 3ac 400v 3ac 480v inrush current max. 10a peak 10a peak -25c to +70c typ. 3a peak 3a peak -25c to +70c inrush energy max. 1a 2 s 1a 2 s -25c to +70c inrush delay typ. 270ms 220ms fig. 7-1 input inrush current, typical behavior input current input voltage output voltage a b a: inrush delay b: start-up delay input: 3x400vac output: 48v, 10a ambient: 25c upper curve: input current 2a / div medium curve: input voltage 1000v / div lower curve: output voltage 100v / div time basis: 100ms / div
qt20.481 q-series 48v, 10a, t hree p hase i nput oct. 2006 / rev. 1.0 ds-qt20.481-en all parameters are specified at 48v, 10a, 3x400vac, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone + 49 89 9278 0 germany 5/23 8. o utput output voltage nom. 48v adjustment range min. 48-55v guaranteed, mult i turn potentiometer max. 56.1v at clockwise end position of potentiometer factory setting 48.0v 0.2%, at full load, cold unit line regulation max. 10mv 320 to 552vac load regulation max. 100mv static value, 0a ? 10a ? 0a ripple and noise voltage max. 100mvpp 20hz to 20mhz, 50ohm output capacitance typ. 250f 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 nom. 10a at 48v, see fig. 8-1 nom. 8.7a at 55v, see fig. 8-1 output power nom. 480w 48v, continuous nom. 480w 55v, continuous short-circuit current min. 10a load impedance 50mohm, see fig. 8-1 max. 11.5a load impedance 50mohm, see fig. 8-1 bonuspower ? , short term power capability (up to typ. 4s) the power supply is designed to support loads with a hi gher short-term power requirement without damage or shutdown. the short-term duration is hardware con trolled by an output power manager. the bonuspower ? is repeatedly available. de tailed information can be found in chapter 27.1 . once bonuspower ? has been stopped by the output power limit er, a timer disables the next bonuspower ? capability. the recovery timer will start as soon as the output voltag e reaches the adjusted value again, which usually happens after the load has been reduced. output current nom. 15a at 48v, see fig. 8-1 nom. 13a at 55v, see fig. 8-1 output power nom. 720w 48v, short term nom. 720w 55v, short term short-circuit current min. 15a load impedance 50mohm, see fig. 8-1 max. 17a load impedance 50mohm, see fig. 8-1 bonus time typ. 4s at 48v, 15a, duration unt il the output voltage dips, min 3.5s see fig. 8-2 max. 4.5s bonuspower ? recovery time typ. 7s overload free time to reset power manager, see fig. 8-3 peak current capability (up to several ms) the power supply can deliver a peak current which is higher th an 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 27.2. peak current voltage dips typ. from 48v to 37v at 20a for 20ms typ. from 48v to 38.5v at 40a for 2ms typ. from 48v to 34.2v at 40a for 5ms
qt20.481 q-series 48v, 10a, t hree p hase i nput oct. 2006 / rev. 1.0 ds-qt20.481-en all parameters are specified at 48v, 10a, 3x400vac, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone + 49 89 9278 0 germany 6/23 fig. 8-1 output voltage vs. output current, typ. fig. 8-2 bonus time vs. output power output voltage 0 02 6 1012 8 16 24 55v 32 40 48 16 a 814 adjustment range 4 c o n t i n u o u s s h o r t - t e r m output current m a x . bonus time 0 110 120 130 140 150 160% output power 1 2 3 4 5s m i n . fig. 8-3 bonuspower ? recovery time power demand output voltage limitation by power manager bonus power disabled recovery time 100% <150% bonus time bonus power ? is available as soon as power comes on and immedi ately after the end of an output short circuit. fig. 8-4 bonuspower ? after input turn-on fig. 8-5 bonuspower ? after output short 100% output voltage intput voltage bonus power output power 150% short of output 100% output voltage bonus power output power 150%
qt20.481 q-series 48v, 10a, t hree p hase i nput oct. 2006 / rev. 1.0 ds-qt20.481-en all parameters are specified at 48v, 10a, 3x400vac, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone + 49 89 9278 0 germany 7/23 9. h old - up t ime 3ac 400v 3ac 480v hold-up time typ. 22ms 22ms 10a, 48v, see fig. 9-1 typ. 44ms 44ms 5a, 48v, see fig. 9-1 fig. 9-1 hold-up time vs. input voltage fig. 9-2 shut-down behavior, definitions 0 10 20 30 40 50ms 320 360 400 440 3x480vac input voltage hold-up time 4 8 v, 5 a , t y p . 4 8 v , 1 0 a , t y p . 4 8 v, 5 a , m i n . 4 8 v , 1 0 a , m i n . - 5% hold-up time zero transition output voltage intput voltage 10. dc-ok r elay c ontact 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 volt age reaches the adjusted output voltage. contact opens as soon as the output voltage dips more than 10% below the adjusted output voltage. short dips will be extended to a signal length of 250ms. dips shorter than 1ms will be ignored. contact re-closes as soon as the output volt age exceeds 90% of the adjusted voltage. contact ratings max 60vdc 0.3a, 30vdc 1a, 30vac 0.5a resistive load min 1ma at 5vdc min. permissible load isolation voltage see dielectri c strength table in section 20 fig. 10-1 dc-ok relay contact behavior 250ms 90% v adj < 1ms 10% open v out = v adj open closed closed > 1ms note: the dc-ok feature requires that the output voltage reaches the nominal (=adjuste d) level after turn-on in order to function according to specification. if this level cannot be achieved, the overload lamp will be on and the dc-ok contact will be open. the overload signal will only shut off as soon as the adjusted voltage is reached. this is an important condition to consider particularly, if the load is a battery, the power supply is used in parallel or the power supply is used for n+1 redundant systems.
qt20.481 q-series 48v, 10a, t hree p hase i nput oct. 2006 / rev. 1.0 ds-qt20.481-en all parameters are specified at 48v, 10a, 3x400vac, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone + 49 89 9278 0 germany 8/23 11. e fficiency and p ower l osses 3ac 400v 3ac 480v efficiency typ. 95.4% 95.0% 10a, 48v, power losses typ. 23.1w 25.3w 10a, 48v, typ. 8.2w 10.0w 0a fig. 11-1 efficiency vs. output current at 48v fig. 11-2 losses vs. output current at 48v efficiency 2345678910a 88 89 90 91 92 93 output current 94 95 96% 3x 400vac 3x 480vac power losses 01234567 10a 0 5 10 15 20 output current 25 30w 89 3x 400vac 3x 480vac fig. 11-3 efficiency vs. input voltage, 48v, 10a fig. 11-4 losses vs. input voltage, 48v, 10a efficiency 350 400 450 500 3x550 va c 94.6 94.8 95.0 95.2 input voltage 95.4 95.6 95.8% power losses 350 400 450 500 3x550 va c 21.0 22.0 23.0 24.0 input voltage 25.0 26.0 27w
qt20.481 q-series 48v, 10a, t hree p hase i nput oct. 2006 / rev. 1.0 ds-qt20.481-en all parameters are specified at 48v, 10a, 3x400vac, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone + 49 89 9278 0 germany 9/23 12. f unctional d iagram fig. 12-1 functional diagram + + - - v out dc ok output over- voltage protection pfc converter input filter input rectifier inrush limiter transient filter output voltage regulator power converter output filter dc ok relay output voltage monitor output power manager temper- ature shut- down over- load dc ok l2 l3 l1 13. f ront s ide and u ser e lements fig. 13-1 front side output voltage potentiometer (multi turn potentiometer) open the flap to tune the output voltage. factory setting: 48.0v dc-ok lamp (green) overload lamp (red) output terminals quick-connect spring-clamp terminals, no tools required + positive output - negative (return) output dual pins per pole dc ok relay contact (no-contact) overload lamp dc-ok lamp dc-ok contact normal mode off on closed 480w continuous power / 720w peak power bonuspower ? mode off on closed overload (v out < 90%) on off open short-circuit (v out = ca. 0v) on off open over- temperature off on open input terminals quick-connect spring-clamp terminals, no tools required l1, l2, l3 line inputs ... pe (protective earth) input no input power off off open see chapter 14 ?terminals and wiring? to choose appropriate wire gauges dc-ok lamp and dc-ok contact function synchronized
qt20.481 q-series 48v, 10a, t hree p hase i nput oct. 2006 / rev. 1.0 ds-qt20.481-en all parameters are specified at 48v, 10a, 3x400vac, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone + 49 89 9278 0 germany 10/23 14. t erminals and w iring type bi-stable, quick-conne ct spring clamp terminals. i p20 finger safe construction. suitable for field- and factory in stallation. shipped in open position. solid wire 0.5-6mm 2 stranded wire 0.5-4mm 2 american wire gauge 20-10 awg ferrules allowed, but not required wire stripping length 10mm / 0.4inch pull-out force 10awg:80n, 12awg:60n, 14awg:50n, 16awg:40n (according to ul486e) fig. 14-1 connecting a wire 1. insert the wire 2. snap the lever to disconnect wire: same procedure vice versa instructions: a) use appropriate copper cables that are designed for an operating temperature of: 60c for ambient up to 45c and 75c for ambient up to 60c minimum. b) follow national installation codes and installation regulations! c) ensure that all strands of a stranded wire enter the terminal connection! d) up to two stranded wires with the same cross section are permitted in one connection point (except pe wire). e) do not use the unit without pe connection. 15. r eliability 3ac 400v 3ac 480v lifetime expectancy min. 51 000h 48 000h 40c, 48v, 10a min. 89 000h 86 000h 40c, 48v, 5a min. 144 000h 135 000h 25c, 48v, 10a mtbf sn 29500, iec 61709 690 000h 670 000h 40c, 48v, 10a 1 194 000h 1 159 000h 25c, 48v, 10a mtbf mil hdbk 217f 284 0 00h 271 000h 40c, 48v, 10a, ground benign gb40 389 000h 371 000h 25c, 48v, 10a, ground benign gb25 the lifetime expectancy shown in the table indicates the operating hours (service life) and is determined by the lifetime expectancy of the built-in electrolytic capacitors. lifetime expectancy is specified in ope rational hours. lifetime expectancy is calculated according to the capacitor?s manufacturer specification. the prediction model allows a calculation of up to 15 y ears from date of shipment. mtbf stands for m ean t ime b etween f ailure, which is calculated according to statistical device fa ilures, and indicates reliability of a device. it is the statistical representati on of the likelihood of a unit to fail and does not necessarily represent the life of a product.
qt20.481 q-series 48v, 10a, t hree p hase i nput oct. 2006 / rev. 1.0 ds-qt20.481-en all parameters are specified at 48v, 10a, 3x400vac, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone + 49 89 9278 0 germany 11/23 16. emc the power supply is suitable for applicat ions in industrial environment as well as in residential, commercial and light industry environment without any res trictions. ce mark is in conforma nce with emc guide line 89/336/eec and 93/68/eec and the low-voltage directive (lvd) 73/23/ewg. a detailed emc report is available upon request emc immunity en 61000-6-1 en 61000-6-2 generic standards electrostatic discharge en 61000-4-2 contact discharge air discharge 8kv 15kv criterion a criterion a electromagnetic rf field en 6100 0-4-3 80mhz-1ghz 10v/m criterion a fast transients (burst) en 61000-4-4 input lines output lines 4kv 2kv criterion a criterion a surge voltage on input en 61000-4-5 l1 ? l2, l2 ? l3, l1 ? l3 2kv criterion a surge voltage on input en 61000-4-5 l1 / l2 / l3 ? pe 4kv criterion a surge voltage on output en 61000-4-5 + ? - + / - ? pe 500v 500v criterion a criterion a conducted disturbance en 61000-4-6 0.15-80mhz 10v criterion a mains voltage dips dip on all three phases en 61000-4-11 70% of 380vac 40% of 380vac 40% of 380vac 266vac, 10ms 152vac, 100ms 152vac, 1000ms criterion a criterion c criterion c mains voltage dips dip on one phase en 61000-4-11 70% of 380vac 40% of 380vac 40% of 380vac 266vac, 10ms 152vac, 100ms 152vac, 1000ms criterion a criterion a criterion a voltage interruptions en 61000-4-11 0vac, 5000ms criterion c voltage sags semi f47 0200 dips on two phases according to section 7.2. (semi f47-200) 304vac, 1000ms 266vac, 500ms 190vac, 200ms criterion a criterion a criterion a powerful transients vde 0160 over entire load range 1300v, 1.3ms criterion a criterions: a: power supply shows normal operation behavior within the defined limits. c: temporary loss of function is possible. power supply might shut -down and restarts by itself. no damages or hazards for the po wer supply occur. emc emission en 61000-6-3 and en 61000-6-4 generic standards conducted emission en 55011, en 55022, fcc part 15, cispr 11, cispr 22 class b, input lines radiated emission en 55011, en 55022 class b harmonic input current en 61 000-3-2 fulfilled, active pfc voltage fluctuations, flic ker en 61000-3-3 fulfilled this device complies with fcc part 15 rules. operation is subjected to following tw o conditions: (1) this devi ce may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. switching frequencies the power supply has three converters wi th three different switching frequencies included. one is nearly constant. the othe r two are input voltage and load dependent. switching frequency 1 100khz nearly constant switching frequency 2 30khz to 90khz input voltage and load dependent switching frequency 3 40khz to 220kh z input voltage and load dependent
qt20.481 q-series 48v, 10a, t hree p hase i nput oct. 2006 / rev. 1.0 ds-qt20.481-en all parameters are specified at 48v, 10a, 3x400vac, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone + 49 89 9278 0 germany 12/23 17. e nvironment operational temperature -25c to +70c (-13f to 158f) reduce output power above +60c output de-rating 12w/c 60-70c (140f to 158f), see fig. 17-1 storage temperature -40 to +85c (-40f to 185f) storage and transportation humidity 5 to 95% r.h. iec 60068-2-30 do not energize while condensation is present vibration sinusoidal 2-17.8hz: 1.6mm; 17.8-500hz: 2g 2 hours / axis iec 60068-2-6 vibration random 0.5m 2 (s 3 ) 2 hours / axis iec 60068-2-64 shock 30g 6ms, 20g 11ms 3 bumps / direction, 18 bumps in total iec 60068-2-27 altitude 0 to 6000m (0 to 20 000ft) reduce output power or ambient temperature above 2000m sea level. output de-rating (for altitude) 30w/1000m or 5c/1000m above 2000m, see fig. 17-2 over-voltage category iii en 50178, altitudes up to 2000m ii altitudes from 2000m to 6000m degree of pollution 2 en 50178, not conductive fig. 17-1 output current vs. ambient temp., fig. 17-2 output current vs. altitude allowed output current at 48v 0 -25 0 20 40 70 c 2.5 5 7.5 10 12.5 15a c o n t i n u o u s 60 ambient temperature f o r t y p . 4 s allowed output current at 48v 0 0 2000 4000 6000m 2.5 5 7.5 10 12.5 15a c o n t i n u o u s altitude f o r t y p . 4 s a . . . t a m b < 6 0 c b . . . t a m b < 5 0 c c . . . t a m b < 4 0 c a b c the ambient temperature is defined as the air temperature 2cm below the unit.
qt20.481 q-series 48v, 10a, t hree p hase i nput oct. 2006 / rev. 1.0 ds-qt20.481-en all parameters are specified at 48v, 10a, 3x400vac, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone + 49 89 9278 0 germany 13/23 18. p rotection f eatures output protection electronica lly protected against overload, no-load and short-circuits output over-voltage protection typ. 57vdc max. 60vdc in case of an internal power supply defect, a redundant circuitry limits the maximum output voltage. the output shuts-down and automatically attempts to restart. degree of protection ip 20 en/iec 60529 penetration protection > 3.5mm e.g. screws, small parts over-temperature protection yes out put shut-down with automatic restart input transient protection mov (metal oxid e varistor) and active transient filter internal input fuse not included see section 27.6 note: in case of a protection event, audible noise may occur. 19. s afety input / output separation selv iec/en 60950-1 pelv en 60204-1, en 50178, iec 60364-4-41 double or rein forced insulation class of protection i pe (protective earth) connection required isolation resistance > 5moh m input to output, 500vdc pe resistance < 0.1ohm between housing and pe terminal touch current (leakage current) typ. 0.38ma 3x 400vac, 50hz, tn mains typ. 0.54ma 3x 480vac, 60hz, tn mains < 0.47ma 3x 440vac, 50hz, tn mains < 0.7ma 3x 528vac, 60hz, tn mains 20. d ielectric s trength fig. 20-1 dielectric strength a b c d type test 60s 2500vac 3000vac 500vac 500vac factory test 5s 2500vac 2500vac 500vac 500vac field test 5s 2000vac 2000vac 500vac 500vac a d c b b l1 input dc-ok earth output - + l3 l2 type tests and factory tests: conducted by the manufacturer. do not repeat test in field! rules for field test: use appropriate test equipment which applies the voltage with a slow ramp! connect l1, l2 and l3 together as well as all output poles. the output voltage is floating and has no ohmic connection to ground. to fulfill the pelv requirements accordi ng to en60204-1 6.4. 1, we recommend that either the + pole, the ? pole or any other part of the output circuit shall be connected to the protective earth system. this helps to avoid situations in which a load starts unexpectedly or can not be switched off any more when unnotic ed earth faults occur.
qt20.481 q-series 48v, 10a, t hree p hase i nput oct. 2006 / rev. 1.0 ds-qt20.481-en all parameters are specified at 48v, 10a, 3x400vac, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone + 49 89 9278 0 germany 14/23 21. a pprovals iec 60950-1 iecee cb scheme cb scheme, information technology equipment ul 508 ind. cont. eq. listed e198865 listed for use in u.s.a. (ul 508) and canada (c22.2 no. 14-95) industrial control equipment ul 60950-1 recognized e137006 recognize d for the use in u.s.a. (ul 60950- 1) and canada (c22.2 no. 60950) information technology equipment, level 5 ul 1604 recognized e246877 recognize d for use in u.s.a. (ul 1604) and canada (c22.2 no. 213-m1987) hazardous location class i div 2 t4a groups a,b,c,d and class i zone 2 groups iia, iib and iic the unit is suitable for use in class i division 2 groups a, b, c, d locations as well as for class i zone 2 groups iia, iib and iic locations. substi tution of components may impair suitability for class i division 2 envir onment. do not disconnect equipmen t unless power has been switched off. wiring must be in accordance with cla ss i, division 2 wiring methods of the national electrical code, nfpa 70, and in accordance with other local or national codes. marine gl abs gl (germanischer lloyd) classifi ed and abs (american bureau for shipping) pda for marine and offshore applications. environmental category: c, emc2 22. f ulfilled s tandards en 61558-2-17 safety of power transformers en/iec 60204-1 safety of electrical equipment of machines en/iec 61131-2 programmable controllers en 50178 electronic equipment in power installations semi f47-200 ride-through comp liance for semiconductor industry. 23. u sed s ubstances the unit does not release any silicone and is suitable for the use in paint shops. electrolytic capacitors included in this unit do not use electrolytes such as quaternary ammonium salt systems. plastic housings and other molded plastic materials are fre e of halogens, wires and cables are not pvc insulated. the production material within our production does not include following toxic chemicals: polychlorized biphenyl (pcb), polychlorized terphenyl (pct), pentachlorophenol (pcp), polychlorinated naphthalene (pcn), polybrom biphenyll (pbb), polybrom bipheny-oxyd (pbo ), polybrominated diphenylether (pbde), polychlorinated diphenylether (pcde), polydibromphenyl oxyd (pbdo), cadmium, asbe st, mercury, silicia
qt20.481 q-series 48v, 10a, t hree p hase i nput oct. 2006 / rev. 1.0 ds-qt20.481-en all parameters are specified at 48v, 10a, 3x400vac, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone + 49 89 9278 0 germany 15/23 24. p hysical d imensions and w eight weight 870g / 1.92lb din-rail use 35mm din-rails according to en 60715 or en 50022 with a height of 7.5 or 15mm. the din-rail height must be added to the depth (127mm) to calculate the total required installation depth. electronic files with mech anical data can be downl oaded at www.pulspower.com fig. 24-1 front view fig. 24-2 side view 25. i nstallation and o peration i nstructions mounting orientation: output terminal must be located on top and input terminal on the bottom. for other orientations see section 0. cooling: convection cooled, no forced cooling required. do not cover ventilation grid (e.g. cable conduits) by more than 30%! installation clearances: 40mm on top, 20mm on the bottom, 5mm on the left and ri ght side are recommended when loaded permanently with full power. in case the adjacent device is a heat source, 15mm clearance is recommended. risk of electrical shock, fire , personal injury or death! do not use the unit without proper earth connection (protective ea rth). use the pin on the terminal block for earth connection and not one of the screws on the housing. turn power off before working on the power s upply. protect against inadvertent re-powering. make sure the wiring is correct by following all local and national codes. do not open, modify or repair the unit. use caution to prevent any foreign obje cts from entering in to the housing. do not use in wet locations or in areas wher e moisture or condensation can be expected. service parts: the unit does not contain any servicea ble parts. if damage or malfuncti oning should occur during operation, immediately turn power off and se nd unit to factory for inspection!
qt20.481 q-series 48v, 10a, t hree p hase i nput oct. 2006 / rev. 1.0 ds-qt20.481-en all parameters are specified at 48v, 10a, 3x400vac, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone + 49 89 9278 0 germany 16/23 26. a ccessory zm1.wall wall mounting bracket this bracket is used to mount dime nsion units onto a flat surface without utilizing a din-rail. the two aluminum brackets and the black plastic slide of the unit have to be detached, so that the two ste el brackets can be mounted. fig. 26-1 zm1.wall wall mounting bracket fig. 26-2 assembled wall mounting bracket zm14.side side mounting bracket this bracket is used to mount dimension units sideways with or without utilizing a din-rail. the two aluminum brackets and the black plastic slide of the unit have to be detached, so that the steel brackets can be mounted. for sideways din-rail mounting, the removed aluminum bracket s and the black plastic slider need to be mounted on the steel bracket. fig. 26-3 zm14.side si de mounting bracket panel mount fig. 26-4 zm14.side side mounting bracket din-rail mount
qt20.481 q-series 48v, 10a, t hree p hase i nput oct. 2006 / rev. 1.0 ds-qt20.481-en all parameters are specified at 48v, 10a, 3x400vac, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone + 49 89 9278 0 germany 17/23 27. a pplication n otes 27.1. r epetitive p ulse l oading typically, a load current is not constant. it varies over time. for pulse load comp atibility, following rules must be met: a) the pulse power demand must be below 150% of the nominal power. b) the duration of the pulse power must be shorter than the allowed bonus time. (see output section) c) the average (r.m.s.) output current must be below the specified continuous output current. if the r.m.s. current is higher, the unit will respond wi th a thermal shut-down after a while. use the max. duty cycle curve ( fig. 27-2 ) to check if the average output current is below the nominal current. d) the duty cycle must be below 0.75. e) for altitudes higher than 2000m reduce the pulse loadin g (15w/1000m) or the ambient temperature (5c/1000m) fig. 27-1 repetitive pulse loads, definitions fig. 27-2 max. duty cycle curve 100% p peak t peak p 0 t 0 max. 150% 150% 100 0 0.2 0.4 0.6 0.75 duty cycle 110 120 130 140 p peak p 0 = 1 0 % p 0 = 5 0 % p 0 = 7 5 % p 0 = 1 0 0 % p 0 base load (w) p peak pulse load (above 100%) t 0 duration between pulses (s) t peak pulse duration (s) d uty c ycle t 0 = t peak - (d uty c ycle x t peak ) t peak + t 0 t peak d uty c ycle = utilizing the max. duty cycle curve: example to determine the repetition rate of pulses without dipping of the output voltage: parameters of application: pulse length is t peak = 1s steady state load p 0 =120w (= 50% of i rated ) peak load p peak = 360w (= 150% of i rated ) determining the repetition rate: 1) make a vertical line at p peak = 150% 2) make a horizontal line where the vertical line crosses the p 0 = 50% curve 3) read the max. duty cycle from the duty cycle-axis (= 0.37) 4) calculate the min. pause (base load) length t 0 : d uty c ycle t 0 = t peak - (d uty c ycle x t peak ) = 0.37 1s - (0.37 x 1s) =1.7s 5) pulse length = 1s, min. pause length = 1.7s 6) max. repetition rate = pulse length +pause length = 2.7s more examples for pulse load compatibility: p peak p 0 t peak t 0 p peak p 0 t peak t 0 720w 480w 1s >25s 720w 240w 0.1s >0.16s 720w 0w 1s >1.3s 720w 240w 1s >1.6s 600w 240w 1s > 0,75s 720w 240w 3s >4.9s
qt20.481 q-series 48v, 10a, t hree p hase i nput oct. 2006 / rev. 1.0 ds-qt20.481-en all parameters are specified at 48v, 10a, 3x400vac, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone + 49 89 9278 0 germany 18/23 27.2. p eak c urrent c apability solenoids, contactors and pneumatic modules often have a steady state coil and a pick-up coil. the inrush current demand of the pick-up coil is several times higher than the steady state current and usually exceeds the nominal output current (including the bonus power ? ) the same situation applies, wh en starting a capacitive load. branch circuits are often protected with circuit breakers or fuses. in case of a short or an overload in the branch circuit, the fuse needs a certain amount of over-cu rrent to trip or to blow. the p eak current capability ensures the safe operation of subsequent circuit breakers. assuming the input voltage is turned on before such an ev ent, the built-in large sized output capacitors inside the power supply can deliver extra current. discharging this ca pacitor causes a voltage dip on the output. the following two examples show typical voltage dips: fig. 27-3 peak load 20a for 50ms, typ. fig. 27-4 peak load 40a for 5ms, typ. 20ms/div output voltage output current 48v 0a 20a 30.6v 2ms/div output voltage output current 48v 0a 40a 34.2v peak load 20a (res istive) for 50ms output voltage dips from 48v to 30.6v. peak load 80a (res istive) for 5ms output voltage dips from 48v to 34.2v. please note: the dc-ok relay triggers when the voltage dips more than 10% for longer than 1ms. 27.3. b ack - feeding l oads loads such as decelerating motors and inductors can feed voltag e back to the power supply. this feature is also called return voltage immunity or resi stance against back- e.m.f. (e lectro m agnetic f orce). this power supply is resistant and does not show malfunc tioning when a load feeds back voltage to the power supply. it does not matter, whether the power supply is on or off. the maximum allowed feed back voltage is 58vdc. the absorbing energy can be calculated according to the built-in large sized output capacitor which is specified in chapter 8. 27.4. c harging of b atteries the power supply can be used to charge lead-acid or ma intenance free batteries. (four 12v batteries in series) instructions for charging batteries: a) set output voltage (measured at the battery) very precisely to the end-of-charge voltage. end-of-charge voltage 55.6v 55.0v 54.3v 53.6v battery temperature 10c 20c 30c 40c b) use a 25a circuit breaker (or blocking diode ) between the power supply and the battery. c) ensure that the output current of the power supply is below the allowed charging current of the battery. d) use only matched batteries when putting 12v types in series. e) the return current to the power supply is typ. 14ma at 55vdc when the power supply is switched off (except in case a blocking diode is utilized).
qt20.481 q-series 48v, 10a, t hree p hase i nput oct. 2006 / rev. 1.0 ds-qt20.481-en all parameters are specified at 48v, 10a, 3x400vac, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone + 49 89 9278 0 germany 19/23 27.5. o utput c ircuit b reakers standard miniature circuit breakers (mcbs) can be used for branch protection. ensure that the mcb is rated for dc voltage, too. the following te sts show which circui t breakers the power supply typically trips. circuit breakers have huge tolera nces in their tripping behavi or. therefore, these typical tests can only be used as a recommendation or for comparing two different power s upplies. furthermore, the loop impedance has a major influence on whether a breaker trips or not. two tests were performed, represen ting typical situations: test 1: short circuit with s1 on the power supply end of the cable (loop impedance approx. 20mohm) fig. 27-5 branch protectors, test circuit 1 circuit breaker power supply ac dc + - i load + - s1 parameters: input voltage:3x 400vac, load current: 0a tripping time shorter than 5s. the following circuit breaker tripped during the test: a - or z - characteristic:: e qual or smaller 10a b - characteristic: equal or smaller 6a c - characteristic: equal or smaller 4a test 2: short circuit with s1 on the load end (additional impedance included; represents longer load wire length). fig. 27-6 branch protectors, test circuit 2 r circuit breaker power supply ac dc + - i s1 load + - parameters: input voltage: 3x 400vac, load current: 0a tripping time shorter than 5s. the following circuit breaker tripped during the test: a - or z - characteristic:: 16a and r< 120mohm b - characteristic: 6a and r< 180mohm c - characteristic: 6a and r<= 220mohm what does this resistance mean in wire length? 0.5mm 2 0.7mm 2 1.0mm 2 1.5mm 2 2.5mm 2 4.0mm 2 120mohm 3.3m 4.7m 6.7m 10.0m 16.7m 26.7m 180mohm 5.0m 7.0m 10.0m 15.0m 25.1m 40.1m 220mohm 6.1m 8.6m 12.3m 18.4m 30.6m 49.0m example: which wire gauge must be used to trip a b-characteristic ci rcuit breaker with a rating of 6a? the load wire length is 21m. answer: a 6a b-characteristic circuit br eaker requires a loop impedance of less than 180mohm (test results). the wire length table shows that up to 25.1m wire with a cross section of 2.5mm 2 are below 180mohm. a wire not smaller than 2.5mm 2 shall be used.
qt20.481 q-series 48v, 10a, t hree p hase i nput oct. 2006 / rev. 1.0 ds-qt20.481-en all parameters are specified at 48v, 10a, 3x400vac, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone + 49 89 9278 0 germany 20/23 27.6. e xternal i nput p rotection the unit is tested and approved for branch circuits up to 15a (u.s.a.) and 16a (iec). external protection is only required, if the supplying branch has an ampacity greater th an this. in some countries local regulations might apply. check also local codes and local requirements. if an external fuse is necessary or utilized, a minimum value is required to avoid undesired tripping of the fuse. b-characteristic c-characteristic ampacity max. 16a (u.s.a.: 15a) 16a (u.s.a.: 15a) min. 6a 3a 27.7. 2-p hase o peration the qt20 series is specified to operate on two phases. fig. 27-7 wiring diagram 2-phase operation instructions for 2-ph operation: reduce output power according to curve. exceeding the limits results in a thermal shut-down. the specification for emc performance, hold-up time, losses and output ripple will no longer be valid. check suitability individually in the application. dc l1 l2 pe l2 l1 l3 fuse l3 open fig. 27-8 2-phase operation, allowed output current fig. 27-9 2-phase operation, hold-up time allowed output current at 48v 0 -25 0 20 70 c 2.5 5 7.5 10 12.5 15a c o n t i n u o u s input voltage f o r t y p . 4 s 40 60 a . . . 2 x 4 6 0 t o 5 5 2 v a c b . . . 2 x 3 4 0 t o 4 6 0 v a c b a 0 10 20 30 40 50ms 320 360 400 440 2x480vac input voltage hold-up time (2-ph) 4 8 v, 5 a , t y p . 4 8 v , 1 0 a , t y p . 4 8 v, 5 a , m i n . 4 8 v , 1 0 a , m i n .
qt20.481 q-series 48v, 10a, t hree p hase i nput oct. 2006 / rev. 1.0 ds-qt20.481-en all parameters are specified at 48v, 10a, 3x400vac, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone + 49 89 9278 0 germany 21/23 27.8. p arallel u se to i ncrease o utput p ower power supplies can be paralleled to increase the output power. fig. 27-10 schematic for parallel operation instructions for parallel use: unit b - + load + - fuse *) fuse *) ac dc ac dc - + unit a a) use only power supplies from the same series (q-series). b) adjust the output voltages of all power supplies to approximately the same value (500mv). otherwise, the dc-ok signal might not work properly. c) a fuse (or diode) on the output is only required if more than three units are connected in parallel. d) keep an installation clearance of 15mm (left / right) between two power supplies and avoid installing the power supplies on top of each other. 27.9. p arallel u se for r edundancy power supplies can be paralleled for redundancy to gain a higher system availability. redundant systems require a certain amount of extra power to support the load in case one power supply unit fails. the simplest way is to put two q-series power supplies in parallel. this is called a 1+1 re dundancy. in case one power supply unit fails, the other one is automatically able to support the load current without any interruption. redundant systems for a higher power demand are usually built in a n+1 method. e.g. five power supplies, each rated for 10a are paralleled to build a 40a redundant system. please note: this simple way to build a redundant system does not co ver failures such as an internal short circuit in the secondary side of the power supply. in such a - virtua lly nearly impossible - case, the defect unit becomes a load for the other power supplies and the output voltage can not be maintained any more. this can only be avoided by utilizing decoupling diodes which are included in the decoupling module yr2.diode. recommendations for building redundant power systems: a) use separate input fuses for each power supply. b) monitor the individual power supply units. a dc-ok lamp and a dc-ok contact is already included in the units this feature reports a faulty unit. c) when possible, connect each power supply to different phases or circuits. d) it is desirable to set the output vo ltages of all power supplies to the same value to avoid a false dc-ok signal. 27.10. d aisy c haining of o utputs daisy chaining (jumping from one power supply output to th e next) is allowed as long as the maximum current through one terminal pin does not exceed 25a. if the current is higher, use a separate distribution terminal block. fig. 27-11 daisy chaining of outputs fig. 27-12 using distribution terminals power supply + + - - input power supply + + - - input load + - max 25a! power supply + + - - input power supply + + - - input load + - distribution terminals
qt20.481 q-series 48v, 10a, t hree p hase i nput oct. 2006 / rev. 1.0 ds-qt20.481-en all parameters are specified at 48v, 10a, 3x400vac, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone + 49 89 9278 0 germany 22/23 27.11. s eries o peration the power supply can be put in series to increase the output voltage. fig. 27-13 schematic for series operation instructions for use in series: unit b - + load + - ac dc ac dc - + unit a earth (see notes) a) it is possible to connect as many units in series as needed, providing the sum of the out put voltage does not exceed 150vdc. b) voltages with a potential above 60vdc are not selv any more and can be dangerous. such voltages must be installed with a protection against touching. c) for serial operation use power supplies of the same type. d) earthing of the output is required when the sum of the output voltage is above 60vdc. e) keep an installation clearance of 15mm (left/right) between two power supplies and avoid installing the power supplies on top of each other. note: avoid return voltage (e.g. from a decelerating motor or battery) which is applied to the output terminals. 27.12. i nductive and c apacitive l oads the unit is designed to supply any kind of load, including unlimited capacitive and inductive loads. 27.13. u se in a t ightly s ealed e nclosure when the power supply is installed in a tightly sealed encl osure, the temperature inside the enclosure will be higher than outside. the inside temperature defines the ambient temperature for the power supply. results from such an installation: power supply is placed in the middle of the box, no other heat producer inside the box enclosure: rittal typ ip66 box pk 9519 100, plastic, 180x180x165mm load: 48v, 8a; (=80%) load is placed outside the box input: 3x 400vac temperature inside enclosure: 55.1c (in the middle of the right side of the power supply with a distance of 2cm) temperature outside enclosure: 24.9c temperature rise: 30.2k
qt20.481 q-series 48v, 10a, t hree p hase i nput oct. 2006 / rev. 1.0 ds-qt20.481-en all parameters are specified at 48v, 10a, 3x400vac, 25c ambient and after a 5 minutes run-in time unless otherwise noted. www.pulspower.com phone + 49 89 9278 0 germany 23/23 mounting orientations mounting orientations other than input terminals on th e bottom and output on the top require a reduction in continuous output power or a limitation in the max. allowed ambien t temperature. the amount of reduction influences the lifetime expectancy of the power supply. therefore, two different derating curves for continuous operation can be found below: curve a1 recommended output current. curve a2 max allowed output current (results approx. in half the lifetime expectancy of a1). fig. 27-12 mounting orientation a standard orientation power supply output input output current 0 10 20 30 40 60 c 2 6 8 10a 50 a 1 4 ambient temperature fig. 27-13 mounting orientation b (upside down) power supply output input output current 0 10 20 30 40 60 c 2 6 8 10a 50 4 a 1 a 2 ambient temperature fig. 27-14 mounting orientation c (table-top mounting) output current 0 10 20 30 40 60 c 2 6 8 10a 50 4 a 1 a 2 ambient temperature fig. 27-15 mounting orientation d (horizontal cw) power supply output input output current 0 10 20 30 40 60 c 2 6 8 10a 50 4 a 1 a 2 ambient temperature fig. 27-16 mounting orientation e (horizontal ccw) power supply output input output current 0 10 20 30 40 60 c 2 6 8 10a 50 4 a 1 a 2 ambient temperature

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