电源选型推荐

整个DTU系统的电源解决方案，主要考虑到不间断供电的问题，所以需要双电源供电的一个供电形式，主流的供电方式一般是有两部分组成，一部分是大功率300W或者500W的AC/DC充电电源，这个电源一般两路输出，一路给后级的板卡进行供电，一方面给后级的蓄电池或者是超级电容进行充电；另外的一部分就是蓄电池或者超级电容，这个主要是在市电断电的情况下，保证整个系统的正常运行。另外，电网对于EMC方面的要求比较苛刻，特别是浪涌方面，需要完全满足4级的要求。主电源和蓄电池都掉电时，系统掉电保持时间500mS以上。

根据上面的应用描述，我们推荐选用金升阳MBP500-2A54D54的接线式电源，它具备电池充电功能，可对48V 铅酸电池充电；工业级工作温度：-40℃～+70℃；2500VAC 高隔离电压；大瞬时过功率达540W；优越的EMC性能；接线式安装。

另外，如果铅酸电池的电压值为24V，还可以选用金升阳公司的MBP300-2A27D27的接线式电源，可对24V的铅酸电池充电，稳态功率达到351W。
电源是各种电子设备必不可缺的组成部分,其性能优劣直接关系到电子设备的技术指标及能否安全可靠地工作。目前常用的直流稳压电源按功率管的工作方式分为线性电源和开关电源两大类。线性稳压电源亦称串联调整式稳压电源,电路技术比较成熟。具有低纹波、高稳压性能等优点。但由于必须使用工频变压器,且调整管工作在线性放大区,因而体积大和重量大、效率低。开关电源调整管工作在高频开关状态,功率损耗小,且使用小体积的高频变压器替代笨重的工频变压器来实现电压变换和电网隔离。
为解决传统的PWM型变换器的上述问题,可采用谐振、准谐振、多谐振以及具软开关的PWM型变换器。这些变换器吸收、利用了PWM型变换器中的寄生参数或外加电感、电容作为谐振参数,使变换器中的功率开关在零电压或零电流下开通和关断,开关两端的电压或经过开关的电流是正弦或半正弦波形。因此大大减少开关的瞬问损耗和开关应力以及电磁干扰和射频干扰.使其工作频率可进一步提高到1Mhz以上，效率达90%以上。再加上小型片状电子元器件,包括磁性材科,例如:平板型变压器等以及表面安装技术以及散热方式的改进，就使电源系列、标准化、模块化成为现实。

Siemens BL 3p 15a B315 Bolt In Circuit Breaker
       Siemens B345 BL 3 pole 45 amp Circuit Breaker
       Siemens B335 BL 3 pole 35 amp Circuit Breaker
       Siemens B325 BL 3 pole 25 amp Circuit Breaker
       Siemens B120AF 1p 20a 120v Arc Fault Breaker 1-yr Warranty
       SIEMENS A5E00359595 BOARD A5E00359622 (A11)
       SIEMENS A5E00246214 BOARD (A11)
       Siemens 6EP1 332-2BA00 SITOP Power 4 Power Supply
       Siemens 48DH38A6S2 Bi Metal OL Relay
       Siemens 48ASU3M20 ESP100 Overload Relay Trip Class 20 270 AMP 3 Phase
       Siemens 3SE3 100 -0V AC1 10A
       Siemens 3RV1021-1DA10 Motor Starter 2.2-3.2A BC
       SIEMENS 100 AMP 3 POLE CIRCUIT BREAKER ED43B100 WA-94 FREE SHIPPING!
       PULLOFF SIEMENS SITOP POWER 10 SUPPLY 6EP1-334-1SL11
       LOT OF 9 SIEMENS 6ES7 322-1BH01-0AA0 DAMAGED DURING REMOVAL (D5)
       LOT OF 7 SIEMENS 6ES7 153-2BA01-0XB0 DAMAGED DURING REMOVAL (D5)
       ITE/Siemens ED43B050
       ITE Siemens ED41B045 1 pole 45 amp 277 volt Circuit Breaker
       GE Disconnect, 30 AMP, 20 HP, TH3361 Mod 4.
UN       SIEMENS ITE BQD160 277 VAC 60 A 1 Pole CIRCUIT BREAKER
UN       SIEMENS ITE BQD140 277 VAC 40 A 1 Pole CIRCUIT BREAKER
UN       SIEMENS ITE BQD130 277 VAC 30 A 1 Pole CIRCUIT BREAKER
Un       Siemens 3RT1023-1AK60 Contactor, 9 Amp, 3 Pole, 120 Volt
UN       ITE Siemens QT24020 120/240 VAC 40/20 A 4 (2/2) Pole CIRCUIT BREAKER
UN       ITE SIEMENS EE1B060 60 Amp 120 V 1 Pole CIRCUIT BREAKER
United Electric Type NJ21K Model 7676, 6-73, 0-25 Psi, Shipsameday, ZD#6
Two Siemens 3RV1421-4AA10 Motor Circuit Breakers 10 15 HP
Two Siemens 3RV1011-1JA10 Motor Circuit Breakers 5 HP
TRUMPH SIEMENS DIGITALE PIGGY BACK CIRCUIT BOARD CARD G34924-W1022-C010
Transbator Siemens 4AV 3995-0AA00, prim. 214-425V, sec. 24VDC, 4 Amp.
Trafo Transbator Siemens 4AM4041-5AT10-0C
TOUCHSCREEN GLAS GLASS FüR SIEMENS SIMATIC Panel PC 870 IL70 TOUCHPANEL 6AV7612
TI Texas Instruments U-06B PLC Base Unit U06B Backplane Rack Free Shipping!
TI Siemens CTi RCM-2030 RCM2030 Relay Contact Module PLC
Texas Supervisory Circuits 2.25V, TLC7725ID, 296-3280-5-ND, Lot Of 31, H#64
Texas Instruments/TI/Siemens Simatic 505-4808 120/220 AC Output Module/Card, PLC
Texas Instruments U-04B or Siemens U-04BJ 4 slot rack with 12 month warranty
TEXAS INSTRUMENTS SEMI IC80C517AN18      IC80C517AN18
TEXAS INSTRUMENT/SIEMENS 32 PT 110VAC INPUT MODULE 500-5055
Texas INS IC DRVR/RCVR RS-232, 296-9595-1-ND, MAX3221IDBR, Lot Of 43, E#86
TEC Siemens 550-767N TEC APOGEE FREE SHIPPING
T997 Siemens Simatic 6ES7 332-1BF01-0AA0 E-5
T881 Siemens Sirius 3RS1020-1DD
T69 Siemens Sinec 6GK1543-1AA01 E-5
T68 Siemens Sinec 6GK1543-1AA01 E-4 6GK1 543-1AA01 SPS
T67 Siemens Sinec 6GK1543-1AA01 E-3
T312 Siemens Simatic 6ES7 132-4BF00 Unbenutz versiegelt 6ES7132-4BF00 ET 200S
T1425 Siemens Simatic Eprom 6ES5 374-2KH21 E-1 Memory Card
T1139 Siemens Simatic 6ES7 954-8LC02-0AA0 6ES7954-8LC02-0AA0 FS01 Versiegelt
Surplus Siemens ITE ED41B060 60 amp 1 pole 480 volt Circuit Breaker
Surplus Panel Pullout Siemens BQ2B100 2 pole 100 amp Circuit Breaker
Surplus Panel Pullout Siemens BQ2B090 2 pole 90 amp Circuit Breaker
Surplus Panel Pullout Siemens BQ2B080 2 pole 80 amp Circuit Breaker
Square D FH16020A 125/277V 1 Pole 20 Amp Circuit Breaker (      in Box)
SQUARE D 2510 FW-1P FHP Manual Starter Nema 1 Enclosure Series A
SMC Solenoid NVFS2310-3DZ, NVFS23103DZ, Shipsameday, #1543AR
SM322 ES7-322-1BL00-0AA0 SIEMENS OUTPUT MODULE 32POINT DIGITAL 24VDC
SM321 ES7-321-1BL00-0AA0 SIEMENS OUTPUT MODULE 32POINT DIGITAL 24VDC
Skt Mtr 600V 200A 1Ph 3Wire SIEMENS ENERGY Panel Box Accessories SUAT417-XG
Six (6) Siemens Q22040CT 40-Amp Double Pole Two 20-Amp Single Pole Breaker
SITOR SIEMENS FUSE 3NE4 122
SITOR SIEMENS FUSE 3NE4 121
SITOR SIEMENS FUSE 3NE4 120
SITOR SIEMENS FUSE 3NE4 118
Simens Simatic S5 6ES5491-0LA12 Adaption Casing      !!
Siemens-Schütz,11KW,230V/AC,50Hz,3RT2026-1AP00,OVP,3RT2026-1AP00 3RT
SiemensLOGO!Power 6EP1311-1SH12 E: 01
Siemens-Landis & Staefa RAK122.0021M 55.13225.040 -un      /OVP-
SIEMENS-ITE D11CEU2 rotary handle (NIB)
SIEMENS-ALLIS TA3-K350 *      IN A BOX*
Siemens-Allis Static Trip II Type TI (2T)
Siemens-Allis MSP30L motor starter protector 4-6.3 amp
Siemens-Allis MSP30L Manual Starter Protector
Siemens-Allis MSP30J Motor Starter Protector 2.5-4 Amp
Siemens-Allis Current Limiting Fuse 48FM3R-4 2.4-4.8kV 100 Amp
Siemens-Allis 3ZA2312-1D Limit Switch Top Push Roller Snap Action 24-162-261-501
Siemens-3NP407-Recognized-Fuse-Holder
Siemens: AWD4420-5AD, 8WD4420-5AC and 8WD4420-5AB Stackable Light Set W
Siemens: 49AB01 - Aux. Contact, Side Mount, 1 NC., NEMA Size 00-4, Bundle 7-PACK
SIEMENS/TI 505-7339/5057339 INTERFACE MODULE ***NNB***
Siemens/Simatic 6ES7-194-4CB00-0AA0/6ES71944CB000AA0
SIEMENS/POTTER & BRUMFIELD CB SWITCH W31-X2M1G-10 UN       0615
SIEMENS/ITE/MURRAY Q320 20 AMP 3 POLE 120/240V 3-POLE CIRCUIT BREAKER
SIEMENS/ITE ED23B040 60A 240VAC CIRCUIT BREAKER ***NIB***
SIEMENS/ITE 150 AMP 3P BREAKER QJ23B150 D-27F
SIEMENS/BREGENHORN-BUTOW BOARD 302849-01 TYPE DBM2/X FOR SIPLACE M/N 80S20
Siemens,5SY6325-7,UL1077 SUP. PROT,6KA,3P,25A,C-TRIP
SIEMENS,3RT10241AP00,CONTACTOR, AC-3, 5.5KW/400V
SIEMENS,3RT10151BB42,CONTACTOR, AC-3, 3KW/400V
SIEMENS, TERMINAL BLOCK JUMPERS, 2 POLE, 8WA1895, LOT OF 159
Siemens, Overload Relay #3UA5900-2C, 16 to 25 Amp, 600Volt, 3 Pole, NIB
SIEMENS, LOW TEMP CUTOUT CONTROL RANGE 35/45F, CAT#134-1511,     
Siemens, ITE 25 Amp Circuit Breaker:, Inv 2707
Siemens, ITE 25 Amp Circuit Breaker (2707)
Siemens, GES7-195-7HB00-0XA0, Bus Module,
Siemens, GCA161.1U, Spring Return Electric Damper
SIEMENS, F2020,       , 600V, SIEMENS F2020 20A 600V 2P       
SIEMENS, EE1B015 N,      , 120V, SIEMENS EE1B015 N 15A 120V 1P      
Siemens, Contactor TJ500-0BB4
SIEMENS, CFS361J, 30A, J FUSE PROV. 200KAIC
SIEMENS, CC2-B030 U,       , 277/480V, SIEMENS CC2-B030 U 30A 277/480V 2P       
SIEMENS, CC2-B020 U,       , 277/480V, SIEMENS CC2-B020 U 20A 277/480V 2P       
SIEMENS, AIR DUCT HOUSING FOR SERIES 11, PART#AD-11PC,       IN BOX
SIEMENS, A1106030023, RES, SNBR, NON-IND, 200OHM, I10%
SIEMENS, 8WH3003-0AF00, TERM BLOCK,IDC,THRU-TYPE,2.5,GRAY,3-CONN 50/BX
SIEMENS, 6XV1-850-0BH50, CABLE ITP STANDARD 9/15 5 M
SIEMENS, 6SY70106AA01, NTC THERMISTOR, W98628S1001C24
SIEMENS, 6FX5002-2CD01-1AD0, SIGNAL CABLE, PREASSEMBLED 6FX50022CD011AD0
SIEMENS, 6ES7972-0BB42-0XA0, PROFIBUS CONNECTOR, 12MB, T CBL, PG SOCKET
Siemens, 6ES7 321-1BH02-0AA0, Input Card,       
SIEMENS, 6EP1332-1SH41, POWER SUPPLY 2.5AMP 24VDC
SIEMENS, 5SY6332-6, UL1077 SUP. PROT, 6KA, 3P, 32A, B-TRIP
SIEMENS, 5SQ32701BA16, N-TYPE MCB, 400VAC, 4.5KA, 2-POLE, 16A
Siemens, 5SM3744-6, FI-SCHUTZSCHALTER TYP A 40A,400V, 500MA,
Siemens, 5SM3742-6, FI-SCHUTZSCHALTER TYP A , 25A ,IFN 500MA ,400V
SIEMENS, 52SA7ADN, SELECTOR SWITCH 2-POS LESS LEVER
SIEMENS, 52PT6DAA, PUSH TO TEST PILOT LIGHT FULL VOLTAGE TYP. 24 VOLTS, AC/DC
SIEMENS, 52PT6D5A, PUSH TO TEST PILOT LIGHT
SIEMENS, 52PT6D3AB, PUSH TO TEST PILOT LIGHT FULL VOLTAGE 24 VOLTS AC/DC
SIEMENS, 52PL4L3, PILOT LIGHT, LED MOD 24V, GREEN, PLASTIC
SIEMENS, 52PL4K9, PILOT LIGHT TRANSFORMER TYPE 600VOLTS AC, AMBER
SIEMENS, 52PL4K5, PILOT LIGHT TRANSFORMER TYPE 600 VOLTS, AC, BLUE
SIEMENS, 52PL4G9, PILOT LIGHT TRANSFORMER TYPE 123-130 VOLTS, AC, AMBER
SIEMENS, 52PA2D3A - PUSHBUTTON, MTD, GRN, 1 3/4"MTL ILL, 2POS
SIEMENS, 52PA2D2A, PUSH PULL BUTTON,MTD,RED,1 3/4"MTL ILL,2POS
SIEMENS, 52BP2V2, PUSHBUTTON,MTD,RED,2 1/2" PLASTIC ,2POS
SIEMENS, 3TX4210-0H -- LABEL, TERMINAL STRIP, BLANK, 9X20MM
SIEMENS, 3TF34-0AP6, CONTACTOR
SIEMENS, 3RT1-033-1BB40, CONTACTOR, NONREV, S2, 28A, 24VDC, 3P, SCRW
Siemens, 3RG4601-1AB07, Proximity Switch
SIEMENS, 3LD1218-0TB53, 30A 3P ROTARY DISC SW 3LD12180TB53
Siemens, 192-202, Thermostat
SIEMENS-(LOT OF5)-B120 20 AMP SINGLE POLE 120/240V CIRCUIT BREAKERS-(     )
Siemens Zone Valve Actuator 254-01104 1/2" Valve 2 way NC CV=1 SSB81U
Siemens Zone Valve Actuator 245-00211 1/2" Valve 2 way NC CV=2.5 SSA61
Siemens Zeitrelais 3RP1525-2AP30,230V/AC+24VAC/DC 3RP,NEU,OVP Zeit-Relais
Siemens Zeitrelais 3RP1525-1AP30 GEB
Siemens Zeitrelais 3RP1505-2BW30 24-240V/AC/DC 0,05s-100h NEU, OVP Relais 3 RP
Siemens Zeitrelais 3RP1505-1BW30 24-240V/AC/DC 0,05s-100h NEU, OVP Relais 3 RP
Siemens Zeitrelais 3RP1505-1AP30 GEB
SIEMENS X-RAY GENERATOR CIRCUIT BOARD MODULE 73-51-943 X1423 D121 7351943 X1423
SIEMENS X-RAY GENERATOR CIRCUIT BOARD MODULE 1306-137-55 1306.137.55 1306-136-01
SIEMENS X-RAY CIRCUIT BOARD CARD 83-53-039 X1423 D44 8353039 X1423
SIEMENS X-RAY CIRCUIT BOARD CARD 73-53-782 X1423 7353782 D48
Siemens Wireless Terminals Toshiba T6K03 Display Driver Software Integration Man
Siemens Wire Grip Kit TA1-F350 For F Frame Breaker *Lot of 4*       Surplus
Siemens WINCC FLEXIBLE 2008 RUNTIME Single License/ WinAC RTX 2010 Single Licens
SIEMENS WB3100 Outdoor Breaker Enclosure