RAX 15-20K - Kepco, Inc.
Contents
1. 3 L t q 2 5 aS s f g d D 0 0 8 66 0 06 220 1 7 7 4840 03 190 0 7 l h 3 9040 7 0 03 3 54 TAP 8 32 4 PLACES Dimensions in parentheses are in millimeters others are in inches TOLERANCES 0 04 1 0 mm unless specified MOUNTING SCREW PENETRATION 0 028 7 mm maximum TERMINAL BLOCK 9 Terminals KEPCO P N 567 0017 Terminal screws M4X6BN with captive flat and lock washer KEPCO P N 501 0058 MATERIAL AND FINISH A Case is aluminum phosphate coated B Terminal Block is Polybutylene Terephthalate black WEIGHT 5 5 Ibs 2 5Kg max 4 9lbs 2 2 Kg typ FIGURE 4 OUTLINE DRAWING RAX 300W SERIES http www kepcopower com email hq kepcopower com KEPCO INC 131 38 SANFORD AVENUE FLUSHING NY 11352 U S A TEL 718 461 7000 FAX 718 767 1102 092200 228 1228 REV 2 30411722. Safety Standards RAX are CE marked per the Low Voltage current _ Directive LVD EN60950 The standards do not apply with DC input operation 40 REMOTE ERROR SENSING 5 60K models up to 0 25V per load wire All other models up to 0 4V per load wire The power supply is factory set with links in place REMOTE CONTROL ON OFF Ree eng High 2 4V 24V or open unit ON Low 0 0V 0 4V or closed unit OFF FIGURE 1 TEMPERATURE DERATING When Remote Control RC is at Low level the output voltage remains Vo lt 0 5V Vo lt 5 0 of nominal output for 12 15 24 28 and 48 volt models lil OPERATION UNIT WILL NOT WORK WITH SENSE LEADS DISCONNECTED SEE FIG 2 INSTALLING THE POWER SUPPLY Refer to Figure 4 The unit may be mounted on one of the three mounting surfaces Mounting holes are provided for each mounting style The air surrounding the power supply must not exceed the ambient val ues given in the graph in Figure 1 CONNECTING AND SWITCHING THE LOAD The load is connected as shown in Figure 2 Error sensing may be done at the load terminals to compensate for voltage loss in the connecting wires The jumper links must therefore be removed from the sense terminals SELECTING INPUT VOLTAGE Input voltage is selected with a jumper Refer to Figure 3 The power supply is delivered for 120V a c operation Change the jumper to the position marked 230V to operate the unit from a nominal 220 240V a
3. c or 320V d c source VOLTAGE ADJUSTMENT The unit is provided with a voltage adjustment control To adjust voltage first place the unit under an operating load then monitor the and sense terminals with a precision voltmeter and turn the voltage control to the desired operating value Refer to Table 1 for Adjustment Range CHANGING FUSE Remove the cover to replace a fuse 10A 250V Refer to Figure 3 The fuse holder will accept two sizes either KEPCO P N 541 0125 or Manufacturer LITTLEFUSE P N 314010 10A 250V 1 4 x 1 1 4 KEPCO P N 541 0099 or Manufacturer LITTLEFUSE P N type F 217010 10A 250V 5mm x 20mm REMOTE TURN ON TURN OFF When power is on at the source the unit may be turned on or off with the remote control fea ture The output of the remote turn on off RC remote control terminals operates at TTL logic levels 2 4V 24V high and 0 0 to 0 4V low The unit is turned off by bringing the RC terminals to low logic level with a switch or solid state device If the remote on off feature is not desired the terminals should be left open TE LINKS THE SENSE LEADS MUST NEVER BE DISCONNECTED FROM SEE NOTE ihe THE OUTPUT IF THE SENSE LEADS ARE ALLOWED TO FLOAT ENSE a FREE OF THE OUTPUT THE OUTPUT VOLTAGE WILL RISE TO Arey N THE OVERVOLTAGE POINT AND THE UNIT WILL SHUT DOWN f VIN FOR REMOTE SENSING CONNECT THE SENSE TERMI os e a SENSING LINKS tet om 1 E JE Pa NA
4. 320V input 9 0A max 240V input INPUT PROTECTION AND SOFT START A triac soft start circuit reduces start up surge Units are protected against shorts by an input fuse Fuse value 10A INPUT SURGE At 25 C from cold start NOTE There are two input surges at turn on INPUT SOURCE FIRST SURGE 5ms max SECOND SURGE 3ms max 120 V a c input selection 20A max 15A typ 220 240V a c input selec 40A max 10A typ tion 320V d c input selection 40A max 40A typ EFFICIENCY 77 typical STABILIZATION CHARACTERISTIC TYPICAL MAXIMUM Source Effect min max 0 8 1 5 Load Effect measured at sensing terminals 10 100 load change 0 8 1 5 Temperature effect 0 to 71 C 1 0 2 0 Combined effect envelope 2 0 4 0 Drift 8 hr at 25 C 0 1 0 5 TRANSIENT RECOVERY A step load change from 50 to 100 of rated load in 50 microseconds or more produces no more than 4 output voltage excursion or 0 5V whichever is greater Recovery to 1 or 0 05V whichever is greater of the original voltage is less than 1 millisecond OUTPUT HOLDING TIME Output is maintained for 20 milliseconds minimum upon input interruption 30 milliseconds typi cal with nominal input voltage and output load at 50 C current rating CURRENT LIMIT AND OVERVOLTAGE PROTECTION Overvoltage interrupts operation until the unit is turned off and then turned back on for a reset period o
5. INS TRUCTION MANUAL 300 WATT SINGLE OUTPUT SWITCHING POWER SUPPLIES CAUTION UNIT IS SET I INTRODUCTION TO 115V AC OPERATION SCOPE OF MANUAL This instruction manual covers the installation and operation of the Kepco RAX 300W Series of Switch ing Power Supplies For service information please refer to the Service Manual for the RAX 300W Series which can be pur chased either from your Kepco Representative or by writing directly to Kepco Inc 131 38 Sanford Avenue Flushing New York 11352 U S A When ordering a Service Manual please state Model Designation and Serial Number of your RAX power supply This information can be found on the nameplate of the unit DESCRIPTION The Kepco RAX 300W Series consists of six models of switching power supplies with a single output as shown in Table 1 Units may be operated with either 115V a c or 230V a c 47 440Hz input They will also operate on 240V to 370V d c input The RAX 300W Series employs a light weight ferrite core with 145 KHz switching frequency Regulation if provided by pulse width modulation A FET power stage operating in the forward conversion mode provides a smooth isolated d c output A triac soft start circuit prevents excessive turn on current surge Overvoltage protection and optically isolated remote TTL on off control is provided Current limiting with automatic recovery from short circuit is featured Units are enclosed in a wrap around aluminum case with an LED ou
6. LS TO THE LOAD AS SHOWN AND REMOVE THE TWO FOR LOCAL SENSING LEAVE THE SENSING LINKS IN PRACE AND CONNECT THE LOAD DIRECTLY TO THE BUS OUTPUT 4 MONITOR l QQ 5 FIGURE 2 CONNECTING THE LOAD WITH ERROR SENSING KEPCO INC 131 38 SANFORD AVENUE FLUSHING NY 11352 U S A TEL 718 461 7000 FAX 718 767 1102 3041271 2 http Avww kepcopower com A gmail hg kepcopower com 3 DETAIL C Ny Ni Ny Nv N GON Ni N 3041172 FIGURE 3 SIMPLIFIED VIEW COVER REMOVED 91 8 3 61 91 SEE DETAIL C INKS S MB i Ti 0 6 T 0 39 0 01 9 0 30 0 01 7 8 2 5 012 3 00 3 _ DETAIL _ B TAP_ 8 32 8 PLACES U EAL SIDE 4 EACH SIDE f 0 7140 02 x SCREWS a 48 0 03 190 0 ee ii 1840 5 f T bg o b q b oP a 27 T D i gt f 5 a iE g Je ya 8 gt e 7 a 5 Q 2 AIR FLOW 5
7. f approximately 20 seconds When output falls below 0 7 of nominal due to reaching the output current limit output is maintained for approximately 20 seconds After this time the output is shut off and the fan stops The source must then be turned off and back on for reset Reset requires about 30 seconds OPERATING TEMPERATURE 0 71 C See the derating graph Figure 1 STORAGE TEMPERATURE 20 C to 75 C HUMIDITY 20 to 95 relative humidity noncondensing ALTITUDE Operating 10 000 feet 3048 0m Nonoperating 35000feet 10668m ISOLATION 25 C ambient 65 relative humidity Between input and output terminals 3 75 KV a c for 1 minute with Y capacitors removed Between input and output or chassis 2000V a c for 1 minute Between output terminals and chassis 500V a c for 1 minute INSULATION RESISTANCE Between output and chassis 100 megohms minimum 500V d c LEAKAGE CURRENT 0 5mA max at 120V a c U L Method 0 75mA max at 240V d c U L VDE Method KEPCO INC 131 38 SANFORD AVENUE FLUSHING NY 11352 U S A TEL 718 461 7000 FAX 718 767 1102 http www kepcopower com email haq kepcopower com 2 228 1228 REV 2 092200 VIBRATION Three Axes 5 10 Hz 10 mm amplitude 10 55 Hz 2G i SHOCK Three axes 20g 11 ms 5msec pulse duration EMI CONDUCTED FCC Class A SAFETY All units designed to meet UL 1950D3 UL 478 CSA Electrical Bulletin 1402C VDE 0806 TUV Rheinland EN60950 and auipiil IEC 950
8. tput present light visible on the terminal side of the case Table 1 contains specifications and operating limits of individual RAX 300W Series models Section II following contains spec ifications and operating limits common to all RAX 300W Series Models ll SPECIFICATIONS The following specifications are at nominal input voltages at 25 C unless otherwise specified TABLE 1 OUTPUT RATINGS AND SPECIFICATIONS RAX 300W SERIES MODEL RAX 5 60K RAX 12 25K RAX 15 20K RAX 24 12K RAX28 10K RAX 48 6K OUTPUT VOLTS d c 5V 12V 15V 24V 28V 48V ADJUSTMENT RANGE 4 0 5 5V 8 4 13 2V 12 0 16 5V 16 8 26 4V 19 6 30 8V 32 6 52 8V MAXIMUM 50 C amb 60 0A 300W 25 0A 300W 20 0A 300W 12 0A 288W 10 0A 280W 6 0A 288W OUTPUT RATINGS 60 C amb 42 0A 210W 17 5A 210W 14 0A 210W 8 4A 201 6W 7 0A 196W 4 2A 201 6W AMPS Wane 71 C amb 24 0A 120W 10 0A 120W 8 0A 120W 4 8A 115 2W 4 0A 112W 2 4A 115 2W CURRENT LIMIT AMPS 65 0 70 0 28 0 30 0 22 0 24 0 13 2 14 4 12 0 16 0 6 8 7 4 OVP RANGE VOLTS 6 0 6 9 13 7 15 7 17 0 19 5 27 0 30 5 32 0 35 0 55 0 63 0 source typ 5 15 15 25 30 35 source max 10 30 30 40 60 90 RIPPLE AND 2 switching typ 25 25 25 25 25 25 NoIsE mV p P switching max 40 50 50 60 60 60 spike nies 100 170 200 290 330 530 max 1 Change of current setting with the specified variations for operating temperatures and source input
9. voltage is within 10 of the rated values 2 Source component 2x source frequency and switching component approximately 145KHz 3 Measured with a 50 MHz bandwidth INPUT VOLTAGE Jumper selectable see Section Ill FIG 3 120V a c nominal range 85 132V a c 90 132V a c for model RAX 28 10K 220 240V a c nominal range 170 264V a c 180 264V a c for model RAX 28 10K 320V d c nominal range 240 370V d c For d c input the jumper is placed in the 230V position INPUT SOURCE FREQUENCY Nominal 50 60 Hz Range 47 440 Hz At 440 Hz the leakage current exceeds the VDE safety specification limit KEPCO INC 131 38 SANFORD AVENUE FLUSHING NY 11352 U S A TEL 718 461 7000 FAX 718 767 1102 2000 KEPCO INC Data subject to change without notice http www kepcopower com email hq kepcopower com 228 1228 REV 2 BROWNOUT VOLTAGE 120V a c input selection 80V a c min 85V a c min for model RAX 28 10K 220 240V a c input selection 160V a c min 170V a c min for model RAX 28 10K 320V d c input selection 220V d c min Jumper in 230V a c position INPUT CURRENT maximum load at 50 C with nominal output voltage INPUT SOURCE NOMINAL INPUT VOLTAGE MINIMUM INPUT VOLTAGE 120 V a c input selection 4 6A typ 6 0A max 6 0A typ 7 2A max 220 240V a c input selec tion 2 8A typ 3 6A max 3 3A typ 4 0A max d c input selection 7 0A max
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