CP20.481

CP20.481 CP20.481 POWER SUPPLY • • • • • • • • • • • • • PRODUCT DESCRIPTION Description: Order Number: CP20.481 Accessories: ZM10.WALL Power supply CP20.481-xx AC 100-240V Wide-range input Width only 48mm Efficiency up to 96.3% Excellent partial load efficiency 20% Output power reserves Safe HiccupPLUS overload mode Easy fuse breaking - 3 times nominal current for 12ms 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 SHORT-FORM DATA The Dimension CP-Series are cost optimized power supplies without compromising quality, reliability and performance. The CP-Series is part of the DIMENSION power supply family. The most outstanding features of CP20.481 are the high efficiency, electronic inrush current limitation, active PFC, wide operational temperature range. The small size is achieved by a synchronous rectification, LLC technology and by many further technological design details. The C-Series includes all the essential basic functions. The device has a power reserve of 20% included, which may even be used continuously at temperatures up to +45°C. Additionally, the CP20.481 can deliver about 3 times the nominal output current for 12ms 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 make this unit suitable for nearly every situation. ORDER NUMBERS 1AC 48V 480W Output voltage DC 48V Adjustment range 48-56Vdc Output current Input voltage AC Mains frequency Input current AC Power factor Input voltage DC Input current DC AC Inrush current Nominal Factory setting 48V 12-10.3A Below +45°C ambient 10-8.6A At +60°C ambient 7.5-6.5A At +70°C ambient Derate between +45°C and +70°C AC 100-240V ±10% 50-60Hz ±6% 4.26 / 2.23A At 120 / 230Vac 0.996 / 0.98 At 120 / 230Vac DC 110-150V ±20% 4.64A At 110Vdc 10 / 4.5Apeak At 120 / 230Vac Efficiency 95 / 96.3% Power losses 25.1 / 18.4W Hold-up time 32 / 32ms Temperature range -25°C to +70°C Size (w x h x d) 48x124x127mm Weight 830g / 1.83lb At 120 / 230Vac At 120 / 230Vac At 120 / 230Vac Without DIN rail MAIN APPROVALS For details or a complete approval list, see chapter 20. Wall/Panel mount bracket All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 1 / 32 CP20.481 Index 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Intended Use....................................................... Installation Instructions...................................... AC-Input.............................................................. DC-Input.............................................................. Input Inrush Current.......................................... Output................................................................. Hold-up Time...................................................... DC-OK Relay Contact......................................... Efficiency and Power Losses.............................. Lifetime Expectancy........................................... MTBF.................................................................... Functional Diagram............................................ Terminals And Wiring........................................ Front Side And User Elements........................... EMC..................................................................... Environment....................................................... Protection Features............................................ Safety Features................................................... 19 20 21 22 23 Dielectric Strength.............................................. Approvals and Fulfilled Standards.................... Regulatory Compliance...................................... Physical Dimensions And Weight...................... Accessories.......................................................... 23.1 ZM10.Wall - Wall/Panel Mount Bracket.. 23.2 UF20.481 - BUFFER MODULE.................. 23.3 YR40.482 – Redundancy Module............ 24 Application Notes............................................... 24.1 Peak Current Capability.......................... 24.2 Output Circuit Breakers.......................... 24.3 Parallel Use to Increase Output Power... 24.4 Parallel Use for Redundancy.................. 24.5 Series Operation...................................... 24.6 Charging of Batteries.............................. 24.7 Two Phase Operation............................. 24.8 Use in a Tightly Sealed Enclosure........... 24.9 Mounting Orientations........................... 3 3 5 6 7 8 10 11 12 13 13 14 15 16 17 18 19 19 20 21 22 23 24 24 24 25 26 26 27 28 29 30 30 30 31 32 The information given in this document is correct to the best of our knowledge and experience at the time of publication. If not expressly agreed otherwise, this information does not represent a warranty in the legal sense of the word. As the state of our knowledge and experience is constantly changing, the information in this data sheet is subject to revision. We therefore kindly ask you to always use the latest issue of this document (available under www.pulspower.com). No part of this document may be reproduced or utilized in any form without our prior permission in writing. Packaging and packaging aids can and should always be recycled. The product itself may not be disposed of as domestic refuse. TERMINOLOGY AND ABBREVIATIONS PE and Symbol Earth, Ground T.b.d. AC 230V 230Vac 50Hz vs. 60Hz may shall should PE is the abbreviation for Protective Earth and has the same meaning as the symbol . 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 tolerances (usually ±15%) included. E.g.: DC 12V describes a 12V battery disregarding whether it is full (13.7V) or flat (10V) A figure with the unit (Vac) at the end is a momentary figure without any additional tolerances included. As long as not otherwise stated, AC 230V parameters are valid at 50Hz mains frequency. A key word indicating flexibility of choice with no implied preference. A key word indicating a mandatory requirement. A key word indicating flexibility of choice with a strongly preferred implementation. All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 2 / 32 CP20.481 1. Intended Use This device is designed for installation in an enclosure and is intended for commercial use, such as in industrial control, process control, monitoring and measurement equipment or the like. Do not use this device in equipment, where malfunctioning may cause severe personal injury or threaten human life without additional appropriate safety devices, that are suited for the application. If this device is used in a manner outside of its specification, the protection provided by the device may be impaired. 2. Installation Instructions DANGER – – – – – Risk of electrical shock, fire, personal injury or death. Turn power off before working on the device. Protect against inadvertent re-powering. Do not open, modify or repair the device. Use caution to prevent any foreign objects from entering the housing. Do not use in wet locations or in areas where moisture or condensation can be expected. Do not touch during power-on, and immediately after power-off. Hot surfaces may cause burns. NOTE Notes for use in hazardous location areas: The device is suitable for use in Class I Division 2 Groups A, B, C, D T4 locations and for use in Group II Category 3 (Zone 2) environments. Classification: ATEX: EPS 17 ATEX 1 089 X, II 3G EX ec nC IIC T4 Gc / IECEx EPS 17.0046X CAUTION WARNING EXPLOSION HAZARDS! – Do not use with DC input voltages. Do not use with AC input voltages below 90Vac. – Use only in standard vertical mounting orientation with the input terminals on bottom of the unit. Substitution of components may impair suitability for this environment. – Do not disconnect the device or operate the voltage adjustment unless power has been switched off or the area is known to be non-hazardous. – A suitable enclosure must be provided for the end product which has a minimum protection of IP54 and fulfils the requirements of the EN 60079-0. This device may only be installed and put into operation by qualified personnel. This device does not contain serviceable parts. The tripping of an internal fuse is caused by an internal defect. If damage or malfunction should occur during installation or operation, immediately turn power off and send the device to the factory for inspection. Install the device in an enclosure providing protection against electrical, mechanical and fire hazards. Install the device onto a DIN rail according to EN 60715 with the input terminals on the bottom of the device. Other mounting orientations require a reduction in output current. Make sure that the wiring is correct by following all local and national codes. Use appropriate copper cables that are designed for a minimum operating temperature of 60°C for ambient temperatures up to +45°C, 75°C for ambient temperatures up to +60°C and 90°C for ambient temperatures up to +70°C. Ensure that all strands of a stranded wire enter the terminal connection. Use ferrules for wires on the input terminals. Unused screw terminals should be securely tightened. The device is designed for use in pollution degree 2 areas in controlled environments. No condensation or frost is allowed. The enclosure of the device provides a degree of protection of IP20. The housing does not provide protection against spilled liquids. The isolation of the device is designed to withstand impulse voltages of overvoltage category III according to IEC 60664-1. The device is designed as “Class of Protection I” equipment according to IEC 61140. Do not use without a proper PE (Protective Earth) connection. The device is suitable to be supplied from TN, TT or IT mains networks. The continuous voltage between the input terminals and the PE potential must not exceed 300Vac. The input can also be powered from a battery or a similar DC source. The continuous voltage between the supply voltage and the PE/ground potential must not exceed 375Vdc. A disconnecting means shall be provided for the input of the device. This device is designed for convection cooling and does not require an external fan. Do not obstruct airflow and do not cover ventilation grid! The device is designed for altitudes up to 5000m (16400ft). Above 2000m (6560ft) a reduction in output current and over voltage category is required. All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 3 / 32 CP20.481 Keep the following installation clearances: 40mm on top, 20mm on the bottom, 5mm on the left and right side. Increase the 5mm to 15mm in case the adjacent device is a heat source. When the device is permanently loaded with less than 50%, the 5mm can be reduced to zero. The device is designed, tested and approved for branch circuits up to 32A (IEC) and 30A (UL) without additional protection device. If an external fuse is utilized, do not use circuit breakers smaller than 10A B- or C-Characteristic to avoid a nuisance tripping of the circuit breaker. The maximum surrounding air temperature is +70°C (+158°F). The operational temperature is the same as the ambient or surrounding air temperature and is defined 2cm below the device. The device is designed to operate in areas between 5% and 95% relative humidity. All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 4 / 32 CP20.481 3. AC-Input The device is suitable to be supplied from TN-, TT- or IT-mains networks with AC voltage. For suitable DC supply voltages see chapter 4. AC input AC input range nom. AC 100-240V 90-264Vac 264-300Vac Continuous operation Occasionally for maximal 500ms Allowed voltage L or N to earth max. 300Vac Continuous, according to IEC 60664-1 Input frequency nom. 50-60Hz ±6% Turn-on voltage Shut-down voltage typ. typ. 82Vac 72Vac Steady-state value, see Fig. 3-1 Steady-state value, see Fig. 3-1 External input protection See recommendations in chapter 2. AC 100V AC 120V AC 230V Input current typ. 5.15A 4.26A 2.23A At 48V, 10A, see Fig. 3-3 Power factor *) typ. 0.996 0.996 0.98 At 48V, 10A, see Fig. 3-4 Crest factor **) typ. 1.65 1.63 1.63 At 48V, 10A Start-up delay Rise time typ. typ. 450ms 120ms 450ms 120ms 450ms 120ms typ. 170ms 170ms 170ms See Fig. 3-2 At 48V, 10A const. current load, 0mF load capacitance, see Fig. 3-2 At 48V, 10A const. current load, 10mF load capacitance, see Fig. 3-2 max. 500mV 500mV 500mV Turn-on overshoot In single use mode, see Fig. 3-2 *) 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 current waveform. Fig. 3-1: Input voltage range Fig. 3-2: Turn-on behavior, definitions Fig. 3-3: Input current vs. output current at 48V output voltage Fig. 3-4: Power factor vs. output current at 48V output voltage All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 5 / 32 CP20.481 4. DC-Input DC input nom. DC input range DC 110-150V ±20% 88-180Vdc Continuous operation DC input current typ. 4.64A At 110Vdc, 48V, 10A Allowed voltage (+) or (−) input to earth max. 375Vdc Continuous, according to IEC 60664-1 Turn-on voltage Shut-down voltage typ. typ. 80Vdc 70Vdc Steady state value Steady state value The device is suitable to be supplied from a DC input voltage. Instructions for DC use: a) Use a battery or a similar DC source. WARNING A supply from the intermediate DC-bus of a frequency converter is not recommended and can cause a malfunction or damage the unit. b) Connect (+) pole to L and (–) pole to N. c) Connect the PE terminal to an earth wire or to the machine ground. Fig. 4-1: Wiring for DC Input All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 6 / 32 CP20.481 5. Input Inrush Current An active inrush limitation circuit 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. AC 100V AC 120V AC 230V 15Apeak 12Apeak 5.5Apeak Temperature independent Inrush current I max. typ. 12Apeak 10Apeak 4.5Apeak Temperature independent Inrush energy max. 1A2s 1A2s 1A2s Temperature independent Fig. 5-1: Typical turn-on behaviour at nominal load and 25°C ambient All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 7 / 32 CP20.481 6. Output The output provides a SELV/PELV rated voltage, which is galvanically isolated from the input voltage. The output is designed to supply any kind of loads, including capacitive and inductive loads. If extreme large capacitors, such as EDLCs (electric double layer capacitors or “UltraCaps”) with a capacitance >0.25F are connected to the output, the unit might charge the capacitor in an intermittent mode. The output is electronically protected against overload, no-load and short-circuits. In case of a protection event, audible noise may occur. Output voltage nom. 48V max. 48-56V 60V Factory settings typ. typ. 48V 47V Line regulation Load regulation max. max. typ. 10mV 150mV 2000mV Between 90 and 300Vac input voltage change Between 0 and 10A in “single use” mode, static value Between 0 and 10A in “parallel use” mode, static value, see Fig. 6-2 Ripple and noise voltage max. 50mVpp Bandwidth 20Hz to 20MHz, 50Ohm nom. 1) Adjustment range Output current nom. nom. nom. nom. nom. 12A Guaranteed value This is the maximum output voltage which can occur at the clockwise end position of the potentiometer due to tolerances. It is not a guaranteed value which can be achieved. ±0.2% in “single use” mode at full load, cold unit ±0.2% in “parallel use” mode at 10A, cold unit (results to 46.6V ±0.2% at 12A and 49.0V ±0.2% at no load) At 48V and ambient temperatures below +45°C, see Fig. 16-1 10A At 48V and +60°C ambient temperature, see Fig. 6-1 7.5A At 48V and +70°C ambient temperature, see Fig. 16-1 10.3A1) At 56V and ambient temperatures below +45°C, see Fig. 16-1 8.6A At 56V and +60°C ambient temperature, see Fig. 6-1 6.5A At 56V and +70°C ambient temperature, see Fig. 16-1 Derate between +45°C and +70°C Fuse breaking current typ. 30A Up to 12ms once every five seconds, see Fig. 6-2. The fuse braking current is an enhanced transient current which helps to trip fuses on faulty output branches. The output voltage stays above 40V. Overload behavior Continuous current Intermittent current2) For output voltage above 26Vdc, see Fig. 6-1 For output voltage below 26Vdc, see Fig. 6-1 Overload/ short-circuit current max. typ. 14.8A 15A max. 4.7A Continuous current, see Fig. 6-1 Intermitted current peak value for typ. 2s Load impedance 10mOhm, see Fig. 6-2. Discharge current of output capacitors is not included. Intermitted current average value (R.M.S.) Load impedance 10mOhm, see Fig. 6-2 Output capacitance typ. 2500μF Included inside the power supply Back-feeding loads max. 63V The unit is resistant and does not show malfunctioning when a load feeds back voltage to the power supply. It does not matter whether the power supply is on or off. The absorbing energy can be calculated according to the built-in large sized output capacitor. 1) This current is also available for temperatures up to +70°C with a duty cycle of 10% and/or not longer than 1 minute every 10 minutes. 2) At heavy overloads (when output voltage falls below 13V), the power supply delivers continuous output current for 2s. After this, the output is switched off for approx. 18s before a new start attempt is automatically performed. This cycle is repeated as long as the overload exists. If the overload has been cleared, the device will operate normally. See Fig. 6-3. All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 8 / 32 CP20.481 Fig. 6-1: Output voltage vs. output current, typ. Fig. 6-2: Dynamic overcurrent capability, typ. Fig. 6-3: Short-circuit on output, HiccupPLUS mode, typ. Fig. 6-4: Output voltage in “parallel use” mode, typ. All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 9 / 32 CP20.481 7. Hold-up Time The hold-up time is the time during which a power supply’s output voltage remains within specification following the loss of input power. The hold-up time is output load dependent. At no load, the hold-up time can be up to several seconds. The green DC-OK LED is also on during this time. Hold-up time typ. min. typ. min. AC 100V AC 120V AC 230V 65ms 54ms 32ms 24ms 65ms 54ms 32ms 24ms 65ms 54ms 32ms 24ms Fig. 7-1: Hold-up time vs. input voltage At 48V, 5A, see Fig. 7-1 At 48V, 5A, see Fig. 7-1 At 48V, 10A, see Fig. 7-1 At 48V, 10A, see Fig. 7-1 Fig. 7-2: Shut-down behaviour, definitions All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 10 / 32 CP20.481 8. DC-OK Relay Contact This feature monitors the output voltage on the output terminals of a running power supply. Contact closes As soon as the output voltage reaches typ. 90% of the adjusted output voltage level. 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 100ms. Dips shorter than 1ms will be ignored. Switching hysteresis typ. 2V Contact ratings Maximal 60Vdc 0.3A, 30Vdc 1A, 30Vac 0.5A, resistive load Minimal permissible load: 1mA at 5Vdc Isolation voltage See dielectric strength table in chapter 19. Fig. 8-1: DC-ok relay contact behavior All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 11 / 32 CP20.481 9. Efficiency And Power Losses AC 100V AC 120V AC 230V Efficiency typ. typ. 94.4% 94.2% 95% 94.9% 96.3% 96.2% At 48V, 10A At 48V, 12A (Power Boost) Average efficiency*) typ. 94.1% 94.6% 95.5% 25% at 2.5A, 25% at 5A, 25% at 7.5A, 25% at 10A Power losses typ. typ. typ. typ. 2.7W 14.2W 28.5W 35.4W 2.4W 12.5W 25.1W 31W 2.4W 10.6W 18.4W 22.7W At 48V, 0A At 48V, 5A At 48V, 10A At 48V, 12A (Power Boost) *) 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 48V, typ. Fig. 9-2: Losses vs. output current at 48V, typ. Fig. 9-3: Efficiency vs. input voltage at 48V, 10A, typ. Fig. 9-4: Losses vs. input voltage at 48V, 10A, typ. All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 12 / 32 CP20.481 10. Lifetime Expectancy The lifetime expectancy shown in the table indicates the minimum operating hours (service life) and is determined by the lifetime expectancy of the built-in electrolytic capacitors. Lifetime expectancy is specified in operational hours and is calculated according to the capacitor’s manufacturer specification. The manufacturer of the electrolytic capacitors only guarantees a maximum life of up to 15 years (131 400h). Any number exceeding this value is a calculated theoretical lifetime, which can be used to compare devices. Lifetime expectancy AC 100V AC 120V AC 230V 130 000h 368 000h 52 000h 148 000h 33 000h 93 000h 152 000h 431 000h 66 000h 188 000h 45 000h 128 000h 180 000h 509 000h 110 000h 311 000h 89 000h 251 000h At 48V, 5A and 40°C At 48V, 5A and 25°C At 48V, 10A and 40°C At 48V, 10A and 25°C At 48V, 12A and 40°C At 48V, 12A and 25°C 11. MTBF MTBF stands for Mean Time Between Failure, which is calculated according to statistical device failures, and indicates reliability of a device. It is the statistical representation of the likelihood of a unit to fail and does not necessarily represent the life of a product. The MTBF figure is a statistical representation of the likelihood of a device to fail. A MTBF figure of e.g. 1 000 000h means that statistically one unit will fail every 100 hours if 10 000 units are installed in the field. However, it can not be determined if the failed unit has been running for 50 000h or only for 100h. For these types of units the MTTF (Mean Time To Failure) value is the same value as the MTBF value. AC 100V AC 120V AC 230V MTBF SN 29500, IEC 61709 430 000h 790 000h 443 000h 810 000h 540 000h 973 000h At 48V, 10A and 40°C At 48V, 10A and 25°C MTBF MIL HDBK 217F 207 000h 209 000h 244 000h 279 000h 283 000h 334 000h 44 000h 45 000h 54 000h 58 000h 59 000h 72 000h At 48V, 10A and 40°C; Ground Benign GB40 At 48V, 10A and 25°C; Ground Benign GB25 At 48V, 10A and 40°C; Ground Fixed GF40 At 48V, 10A and 25°C; Ground Fixed GF25 All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 13 / 32 CP20.481 12. Functional Diagram Fig. 12-1: Functional diagram All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 14 / 32 CP20.481 13. Terminals And Wiring The terminals are IP20 Finger safe constructed and suitable for field- and factory wiring. Type Solid wire Stranded wire American Wire Gauge Max. wire diameter (including ferrules) Recommended tightening torque Wire stripping length Screwdriver Input Screw terminals Max. 6mm2 Max. 4mm2 AWG 20-10 2.8mm Output Screw terminals Max. 6mm2 Max. 4mm2 AWG 20-10 2.8mm DC-OK-Signal Push-in terminals Max. 1.5mm2 Max. 1.5mm2 AWG 24-16 1.6mm Max. 1Nm, 9lb-in 7mm / 0.28inch 3.5mm slotted or crosshead No 2 Max. 1Nm, 9lb-in 7mm / 0.28inch 3.5mm slotted or crosshead No 2 7mm / 0.28inch 3mm slotted to open the spring Instructions for Wirings: a) Use appropriate copper cables that are designed for minimum operating temperatures of: +60°C for ambient up to +45°C and +75°C for ambient up to +60°C minimum +90°C for ambient up to +70°C minimum. b) Follow national installation codes and installation regulations! c) Ensure that all strands of a stranded wire enter the terminal connection! d) Unused terminal compartments should be securely tightened. e) Ferrules are allowed. Daisy chaining: Daisy chaining (jumping from one power supply output to the next) is allowed as long as the average output current through one terminal pin does not exceed 25A. If the current is higher, use a separate distribution terminal block as shown in Fig. 13-2. Fig. 13-1: Daisy chaining of outputs Fig. 13-2: Using distribution terminals All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 15 / 32 CP20.481 14. Front Side And User Elements A Fig. 14-1: Front side Input Terminals N, L Line input PE (Protective Earth) input B Output Terminals Two identical (+) poles and three identical (−) poles (+) Positive output (−) Negative output (return) C Output Voltage Potentiometer Open the flap to adjust the output voltage. Factory set.: 48V D DC-OK LED (green) On, when the output voltage is >90% of the adjusted output voltage. E DC-OK Relay Contact The DC-OK relay contact is synchronized with the DC-OK LED. See chapter 8 for details. F “Parallel Use” “Single Use” Link Link the two terminal poles when power supplies are connected in parallel. In order to achieve a sharing of the load current between the individual power supplies, the “parallel use” regulates the output voltage in such a manner that the voltage at no load is approx. 4% higher than at nominal load. See also chapter 24.6. All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 16 / 32 CP20.481 15. EMC The EMC behavior of the device is designed for applications in industrial environment as well as in residential, commercial and light industry environments. Without additional measures to reduce the conducted emissions on the output (e.g. by using a filter), the device is not suited to supply a local DC power network in residential, commercial and light-industrial environments. No restrictions apply for local DC power networks in industrial environments. EMC Immunity According to generic standards: EN 61000-6-1, EN 61000-6-2, EN 61000-6-3 and EN 61000-6-4 Electrostatic discharge EN 61000-4-2 Contact discharge Air discharge 8kV 15kV Criterion A Criterion A Electromagnetic RF field EN 61000-4-3 80MHz - 2.7GHz 20V/m Criterion A Fast transients (Burst) EN 61000-4-4 Input lines Output lines Signal lines (coupling clamp) 4kV 2kV 2kV Criterion A Criterion A Criterion A Surge voltage on input EN 61000-4-5 L→N L → PE, N → PE 2kV 4kV Criterion A Criterion A Surge voltage on output EN 61000-4-5 (+) → (−) (+) / (−) → PE 1kV 2kV Criterion A Criterion A Surge voltage on DC-OK EN 61000-4-5 Signal lines → PE 1kV Criterion A Conducted disturbance EN 61000-4-6 0.15 - 80MHz 20V Criterion A Mains voltage dips EN 61000-4-11 0% of 100Vac 40% of 100Vac 70% of 100Vac 0% of 200Vac 40% of 200Vac 70% of 200Vac 0Vac, 20ms 40Vac, 200ms 70Vac, 500ms 0Vac, 20ms 80Vac, 200ms 140Vac, 500ms Criterion A Criterion C Criterion C Criterion A Criterion A Criterion A Voltage interruptions EN 61000-4-11 0% of 200Vac (=0V) 5000ms Criterion C Powerful transients VDE 0160 Over entire load range 750V, 0.3ms Criterion A Performance criterions: A: The device shows normal operation behavior within the defined limits. C: Temporary loss of function is possible. The device may shut-down and restarts by itself. No damage or hazards for the device will occur. EMC Emission Conducted emission input lines EN 55011, EN 55015, EN 55032, FCC Part 15, CISPR 11, CISPR 32 Class B Radiated emission EN 55011, EN 55032 Class B Harmonic input current (PFC) EN 61000-3-2 Fulfilled for Class A equipment Fulfilled for Class C equipment in the load range from 4 to 12A Voltage fluctuations, flicker EN 61000-3-3 Fulfilled, tested with constant current loads, non pulsing This device complies with FCC Part 15 rules. Operation is subjected to following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Switching Frequencies PFC converter Main converter Auxiliary converter 100kHz 80kHz to 140kHz 60kHz Fixed frequency Output load dependent Fixed frequency All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 17 / 32 CP20.481 16. Environment Operational temperature 1 Storage temperature -25°C to +70°C (-13°F to 158°F) -40°C to +85°C (-40°F to 185°F) Output derating 2 6.4W/°C Between +45°C and +60°C (113°F to 140°F) 12W/°C Between +60°C and +70°C (140°F to 158°F) 0.66A/1000m or 5°C/1000m For altitudes >2000m (6560ft), see Fig. 16-2 The derating is not hardware controlled. The user has to take care by himself to stay below the derated current limits in order not to overload the unit. Humidity 3 5 to 95% r.h. According to IEC 60068-2-30 Atmospheric pressure 110-47kPa See Fig. 16-2 for details Altitude Up to 6000m (19685ft) See Fig. 16-2 for details Over-voltage category III II According to IEC 60664-1 for altitudes 2000m Degree of pollution 2 According to IEC 62477-1, not conductive 2-17.8Hz: ±1.6mm 17.8-500Hz: 2g 2 hours / axis 30g 6ms, 20g 11ms 3 bumps / direction 18 bumps in total According to IEC 60068-2-6 Vibration sinusoidal 4 Shock 4 Audible noise Reduce output power according Fig. 16-1 For storage and transportation According to IEC 60068-2-27 Some audible noise may be emitted from the power supply during no load, overload or short circuit. 1) Operational temperature is the same as the ambient or surrounding temperature and is defined as the air temperature 2cm below the unit. 2) The derating is not hardware controlled. The user has to take this into consideration to stay below the de-rated current limits in order not to overload the unit. 3) Do not energize while condensation is present. 4) Tested in combination with DIN rails according to EN 60715 with a height of 15mm and a thickness of 1.3mm and standard orientation. Fig. 16-1: Output current vs. ambient temp. Fig. 16-2: Output current vs. altitude All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 18 / 32 CP20.481 17. Protection Features Output over-voltage protection 1 typ. 58.5Vdc Degree of protection Penetration protection IP 20 >5mm EN/IEC 60529 E.g. screws, small parts Over-temperature protection 2 Included Output shut-down with automatic restart. Input transient protection MOV (Metal Oxide Varistor) For protection values see chapter 15 (EMC). Internal input fuse Included Not user replaceable slow-blow high-braking capacity fuse max. 60Vdc 1) In case of an internal power supply defect, a redundant circuit limits the maximum output voltage. The output shuts down and automatically attempts to restart. 2) In safety critical situations a temperature sensor, which is installed inside the unit on a critical component, turns the unit off (e.g. de-rating requirements not observed, high ambient temperature, ventilation obstructed or the mounting orientation de-rating is not followed). There is no correlation between the operating temperature and turn-off temperature since this is dependent on input voltage, load and installation methods. 18. Safety Features Class of protection I According to IEC 61140 Isolation resistance >500MOhm At delivered condition between input and output, measured with 500Vdc At delivered condition between input and PE, measured with 500Vdc At delivered condition between output and PE, measured with 500Vdc At delivered condition between output and DC-OK contacts, measured with 500Vdc >500MOhm >500MOhm >500MOhm PE resistance 10mA B 3000Vac 25000Vac 2000Vac >10mA C 1000Vac 500Vac 500Vac >20mA D 500Vac 500Vac 500Vac >1mA Fig. 19-1: Dielectric strength B*) When testing input to DC-OK ensure that the max. voltage between DC-OK and the output is not exceeded (column D). We recommend connecting DC-OK pins and the output pins together when performing the test. All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 20 / 32 CP20.481 20. Approvals And Fulfilled Standards IEC 62368 CB Scheme Certificate IEC 62368-1 - Audio/video, information and communication technology equipment - Safety requirements Output safety level: ES1 IEC 61010 CB Scheme Certificate IEC 61010-2-201 - Electrical Equipment for Measurement, Control and Laboratory Use - Particular requirements for control equipment UL 61010 UL Certificate Listed equipment for category NMTR - UL 61010-2-201 - Electrical equipment for measurement, control and laboratory use - Particular requirements for control equipment Applicable for US and Canada E-File: E198865 Class I Div 2 UL Certificate Listed equipment for category NRAD - Industrial control equipment for use in haradous locations Applicable for US and Canada E-File: E327416 Temperature code: T4 Groups: A, B, C and D ATEX Agency Certificate (Bureau Veritas) EN 60079-0 Explosive atmospheres - General requirements EN 60079-7, EN 60079-15 Equipment protection by type of protection "e" and "n" Certificate: EPS 17 ATEX 1 089 X Temperature Code: T4 Type of Protection: ec nC IECEx IECEx Certificate IEC 60079-0 Explosive atmospheres - General requirements IEC 60079-7, IEC 60079-15 Equipment protection by type of protection "e" and "n" Certificate: IECEx EPS 17.0046X Temperature Code: T4 Type of Protection: ec nC IEC 60068-2-60 Manufacturer's Declaration (Online Document) Environmental Tests, Flowing Mixed Gas Corrosion Test Test: Ke - Method 4 H2S: 10ppb NO2: 200ppb Cl2: 10ppb SO2: 200ppb Test Duration: 3 weeks, which simulates a service life of at least 10 years. ISA-71.04-1985 Manufacturer's Declaration (Online Document) Airborne Contaminants Corrosion Test Severity Level: G3 Harsh H2S: 100ppb NOx: 1250ppb Cl2: 20ppb SO2: 300ppb Test Duration: 3 weeks, which simulates a service life of at least 10 years VDMA 24364 Paint Wetting Impairment Substances Test (or LABS-Test) Tested for Zone 2 and Test Class C1 according to VDMA 24364-C1-L/W for solvents and water-based paints All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 21 / 32 CP20.481 21. Regulatory Compliance EU Declaration of Conformity The CE mark indicates conformance with the European WEEE Directive Manufacturer's Statement EU-Regulation on Waste Electrical and Electronic Equipment Registered in Germany as business to business (B2B) products. REACH Directive Manufacturer's Statement EU-Regulation regarding the Registration, Evaluation, Authorization and Restriction of Chemicals RoHS-China Manufacturer's Statement Administrative Measures for the Restriction of the Use of Hazardous Substances in Electrical and Electronic Products 25 years EAC TR Registration EAC Certificate EAC EurAsian Conformity - Registration Russia, Kazakhstan and Belarus 8504408200, 8504409000 – – – – EMC directive Low-voltage directive (LVD) RoHS directive ATEX directive All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 22 / 32 CP20.481 22. Physical Dimensions And Weight Width Height Depth 48mm / 1.89'' 124mm / 4.88'' 127mm / 5'' The DIN rail height must be added to the unit depth to calculate the total required installation depth. Weight 830g / 1.83lb DIN rail Use 35mm DIN rails according to EN 60715 or EN 50022 with a height of 7.5 or 15mm. Housing material Body: Aluminium alloy Cover: Zinc-plated steel Installation clearances See chapter 2. Penetration protection Small parts like screws, nuts, etc. with a diameter larger than 5mm All dimensions in mm unless otherwise noted. Fig. 22-1: Front view Fig. 22-2: Side view All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 23 / 32 CP20.481 23. Accessories 23.1. ZM10.WALL - WALL/PANEL MOUNT BRACKET This bracket is used to mount the devices on a wall/panel without utilizing the DIN rail. The bracket can be mounted without detaching the DIN rail brackets from the power supply. All dimensions in mm unless otherwise noted. Fig. 23-1: Isometric view Fig. 23-2: Isometric view Fig. 23-3: Isometric view 51 9 33 51 5.8 149 149 136 (4x) 6 135 Fig. 23-4: Wall/planel mounting, front view Fig. 23-5: Hole pattern for wall mounting Fig. 23-6: Wall/planel mounting, side view 23.2. UF20.481 - BUFFER MODULE The UF20.481 buffer module is a supplementary device for DC 48V power supplies. It delivers power to bridge typical mains failures or extends the holdup time after the AC power is turned off. When the power supply provides a sufficient voltage, the buffer module stores energy in the integrated electrolytic capacitors. When the mains voltage is lost, the stored energy is released to the DC-bus in a regulated process. The buffer module can be added in parallel to the load circuit at any given point and does not require any control wiring. One buffer module can deliver 20A additional current and can be added in parallel to increase the output ampacity or the hold-up time. All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 24 / 32 CP20.481 23.3. YR40.482 – REDUNDANCY MODULE The YR40.482 is a dual redundancy module, which can be used to build 1+1 or N+1 redundant systems. The device is equipped with two 20A nominal input channels, which are individually decoupled by utilizing MOSFET technology. The output can be loaded with a nominal 40A continuous current. Using MOSFETSs instead of diodes reduces heat generation, losses and voltage drop between input and output. Due to these advantages, the unit is very narrow and only requires 46mm width on the DIN rail. The device does not require an additional auxiliary voltage and is self-powered even in case of a short circuit across the output. It requires suitable power supplies on the input, where the sum of the continuous short circuit current stays below 45A. This is typically achieved when the power supplies are featured with an intermittent overload behavior (HiccupPLUS Mode). See chapter 24.4 for wiring information. All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 25 / 32 CP20.481 24. Application Notes 24.1. PEAK CURRENT CAPABILITY The device can deliver peak currents (up to several milliseconds) which are higher than the specified short term currents. This helps to start current demanding loads. 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. The same situation applies when starting a capacitive load. The peak current capability also ensures the safe operation of subsequent circuit breakers of load circuits. The load branches are often individually protected with circuit breakers or fuses. In case of a short or an overload in one branch circuit, the fuse or circuit breaker need a certain amount of over-current to open in a timely manner. This avoids voltage loss in adjacent circuits. The extra current (peak current) is supplied by the power converter and the built-in large sized output capacitors of the power supply. The capacitors get discharged during such an event, which causes a voltage dip on the output. The following three examples show typical voltage dips for resistive loads: Fig. 24-1: 20A peak current for 50ms , typ. (2x the nominal current) Fig. 24-2: 50A peak current for 5ms , typ. (5x the nominal current) Please note: The DC-OK relay triggers when the voltage dips more than 10% for longer than 1ms. Fig. 24-3: 30A peak current for 12ms , typ. (3x the nominal current) Peak current voltage dips typ. typ. typ. From 48V to 36V From 48V to 39V From 48V to 32V at 20A for 50ms, resistive load at 50A for 2ms, resistive load at 50A for 5ms, resistive load All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 26 / 32 CP20.481 24.2. OUTPUT CIRCUIT BREAKERS Standard miniature circuit breakers (MCB’s or UL 1077 circuit breakers) are commonly used for AC-supply systems and may also be used on 48V branches. MCB’s are designed to protect wires and circuits. If the ampere value and the characteristics of the MCB are adapted to the wire size that is used, the wiring is considered as thermally safe regardless of whether the MCB opens or not. To avoid voltage dips and under-voltage situations in adjacent 48V branches which are supplied by the same source, a fast (magnetic) tripping of the MCB is desired. A quick shutdown within 10ms is necessary corresponding roughly to the ridethrough time of PLC's. This requires power supplies with high current reserves and large output capacitors. Furthermore, the impedance of the faulty branch must be sufficiently small in order for the current to actually flow. The best current reserve in the power supply does not help if Ohm’s law does not permit current flow. The following table has typical test results showing which B- and C-Characteristic MCBs magnetically trip depending on the wire cross section and wire length. Maximal wire length *) for a fast (magnetic) tripping: Fig. 24-4: Test circuit *) C-2A C-3A C-4A C-6A C-8A C-10A C-13A B-6A B-10A B-13A B-16A 0.75mm² 85m 54m 35m 13m 4m 3m 36m 12m 9m 2m 1.0mm² 117m 85m 48m 19m 7m 6m 1m 52m 20m 13m 3m 1.5mm² 165m 117m 65m 25m 9m 8m 1m 75m 25m 17m 5m 2.5mm² >200m 176m 107m 39m 14m 13m 1m 116m 39m 28m 6m Don’t forget to consider twice the distance to the load (or cable length) when calculating the total wire length (+ and – wire). All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 27 / 32 CP20.481 24.3. PARALLEL USE TO INCREASE OUTPUT POWER Devices can be paralleled to increase the output power. The output voltage of all power supplies shall be adjusted to the same value (±100mV) in “Single Use” mode with the same load conditions on all units, or the units can be left with the factory settings. After the adjustments, set the unit to “Parallel Use” mode, in order to achieve load sharing. The “Parallel Use” mode regulates the output voltage in such a manner that the voltage at no load is approx. 4% higher than at nominal load. See also chapter 6. The ambient temperature is not allowed to exceed +60°C. If more than three units are connected in parallel, a fuse or circuit breaker with a rating of 15A or 16A is required on each output. Alternatively, a diode or redundancy module can also be utilized. Energize all units at the same time. It also might be necessary to cycle the input power (turn-off for at least five seconds), if the output was in overload or short circuits and the required output current is higher than the current of one unit. Keep an installation clearance of 15mm (left / right) between two devices and avoid installing devices on top of each other. Do not use devices in parallel in mounting orientations other than the standard mounting orientation or in any other condition where a reduction of the output current is required (e.g. altitude). Pay attention that leakage current, EMI, inrush current will increase when using multiple devices. All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 28 / 32 CP20.481 24.4. PARALLEL USE FOR REDUNDANCY Please note that there are variants with built-in redundancy are available in the CP20 series. Check CP20.241-Rx units. 1+1 Redundancy: Devices can be paralleled for redundancy to gain higher system availability. Redundant systems require a certain amount of extra power to support the load in case one device fails. The simplest way is to put two devices in parallel. This is called a 1+1 redundancy. In case one device fails, the other one is automatically able to support the load current without any interruption. It is essential to use a redundancy module to decouple devices from each other. This prevents that the defective unit becomes a load for the other device and the output voltage cannot be maintained any more. 1+1 redundancy allows ambient temperatures up to +70°C. Pay attention that leakage current, EMI, inrush current, harmonics will increase when using multiple devices. Recommendations for building redundant power systems: a) Use separate input fuses for each device. b) Use separate mains systems for each device whenever it is possible. c) Monitor the individual devices. Therefore, use the DC-OK signal of the device. d) It is desirable to set the output voltages of all devices to the same value (± 100mV) or leave it at the factory setting. e) Set the devices into “Parallel Use” mode. N+1 Redundancy: Redundant systems for a higher power demand are usually built in a N+1 method. E.g. four devices, each rated for 10A are paralleled to build a 30A redundant system. Pay attention that leakage current, EMI, inrush current, harmonics will increase when using multiple devices. Keep an installation clearance of 15mm (left / right) between two devices and avoid installing the devices on top of each other. Do not use devices in parallel in mounting orientations other than the standard mounting orientation or in any other condition, where a reduction of the output current is required. For N+1 redundancy the ambient temperature is not allowed to exceed +60°C. Wiring examples for 1+1 redundancy and N+1 redundancy: Fig. 24-5: 1+1 Redundant configuration for 10A load current with a dual redundancy module Fig. 24-6: N+1 Redundant configuration for 30A load current with multiple power supplies and redundancy modules All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 29 / 32 CP20.481 24.5. SERIES OPERATION Devices of the same type can be connected in series for higher output voltages. It is possible to connect as many units in series as needed, providing the sum of the output voltage does not exceed 150Vdc. 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. Avoid return voltage (e.g. from a decelerating motor or battery) which is applied to the output terminals. Keep an installation clearance of 15mm (left / right) between two power supplies and avoid installing the power supplies on top of each other. Do not use power supplies in series in mounting orientations other than the standard mounting orientation (terminals on the bottom of the unit). Pay attention that leakage current, EMI, inrush current, harmonics will increase when using multiple power supplies. 24.6. CHARGING OF BATTERIES The power supply can be used to charge lead-acid or maintenance free batteries. Two 12V SLA or VRLA batteries are needed in series connection. Instructions for charging batteries: a) b) c) d) e) Use only matched batteries when putting 12V types in series. Ensure that the ambient temperature of the power supply stays below +40°C. Use a 15A or 16A circuit breaker (or blocking diode) between the power supply and the battery. Ensure that the output current of the power supply is below the allowed charging current of the battery. The return current to the power supply (battery discharge current) is typ. 6mA when the power supply is switched off (except in case a blocking diode is utilized). f) Set the device into “Parallel Use” mode and adjust the output voltage, measured at no load and at the battery end of the cable, very precisely to the end-of-charge voltage. End-of-charge voltage Battery temperature 55.6V 10°C 55V 20°C 54.3V 30°C 53.6V 40°C 24.7. TWO PHASE OPERATION The power supply can also be operated on two phases of a three-phase-system. Such a phase-to-phase connection is allowed as long as the supplying voltage is below 240V+10%. Ensure that the wire, which is connected to the N-terminal, is appropriately fused. The maximum allowed voltage between a Phase and the PE must be below 300Vac. All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 30 / 32 CP20.481 24.8. USE IN A TIGHTLY SEALED ENCLOSURE When the power supply is installed in a tightly sealed enclosure, the temperature inside the enclosure will be higher than outside. In such situations, the inside temperature defines the ambient temperature for the power supply. The power supply is placed in the middle of the box, no other heat producing items are inside the box. The temperature sensor inside the box is placed in the middle of the right side of the power supply with a distance of 1cm. The following measurement results can be used as a reference to estimate the temperature rise inside the enclosure. Case A Case B Enclosure size 180x180x165mm Rittal Typ IP66 Box PK 9516 100 plastic 180x180x165mm Rittal Typ IP66 Box PK 9516 100 plastic Input voltage 230Vac 230Vac Load 48V, 8A; (=80%) 48V, 10A; (=100%) Temperature inside the box Temperature outside the box Temperature rise 45.7°C 24.6°C 21.1K 50.6°C 25.6°C 25K All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 31 / 32 CP20.481 24.9. MOUNTING ORIENTATIONS Mounting orientations other than input terminals on the bottom and output on the top require a reduction in continuous output power or a limitation in the maximum allowed ambient temperature. The listed lifetime and MTBF values from this datasheet apply only for the standard mounting orientation. The following curves give an indication for allowed output currents for altitudes up to 2000m (6560ft). A Standard Orientation B Upside down C Table-top mounting D Horizontal cw E Horizontal ccw All parameters are specified at 48V, 10A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. Apr. 2021 / Rev. 1.0 DS-CP20.481-xx-EN www.pulspower.com 32 / 32