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。

SPRECHER+SCHUH/ALLEN BRADLEY KTA3-25 CAT. 140-A11 CIRCUIT BREKEAR
SPRECHER+SCHUH, KT4-C-ASA20, AUXILIARY CONTACT BLOCK, 690V, 10A, SER A
Sprecher+Schuh Zeitrelais KOP 160-D gebraucht/
Sprecher+Schuh Zeitrelais KOP 111-D gebraucht/
SPRECHER+SCHUH XXHCOMPTROL-01 F4/LA7/KTA ASSEMBLY KIT **NIB**
Sprecher+Schuh VUPE 4-4 Ground Terminal Block (Lot of 10 each)
SPRECHER+SCHUH VUET4-4 DOUBLE DECK TERMINAL BLOCK 300V 10A (LOT OF 5) ***NIB***
SPRECHER+SCHUH VU4-4 AND VUPE4-4
SPRECHER+SCHUH VAET4-4 TERMINAL BLOCK END PIECE (BAG OF 9) ***NIB***
Sprecher+Schuh Trip Indication Contact KT7-PAF1-S01/M10
Sprecher+Schuh Timing Relay KOP10 1010 1.5-30 Seconds 100-127 VAC ()
Sprecher+Schuh Thermal Overload Relay CT7-75-45
SPRECHER+SCHUH THERMAL OVERLOAD RELAY 1.6-5.0A CEP7-A32 SER B
SPRECHER+SCHUH THERMAL OVERLOAD RELAY - CT 3-12 1.6 - 2.5 AMP W/ SOCKET
SPRECHER+SCHUH THERMAL OVERLOAD RELAY - CT 3-12 1.6 - 2.5 AMP W/ SOCKET
Sprecher+Schuh TD-855 COIL 24VAC 50/60HZ FOR STARTER  in the box!
Sprecher+Schuh TD733 COIL, DC, CA7-43C, 110V  in the box!
Sprecher+Schuh TD475 COIL  in the box!
Sprecher+Schuh TC296 Coil 208-240 Volt  in the box!
Sprecher+Schuh ta860 coil  in the box!
Sprecher+Schuh TA-855 Coil  in the box!
SPRECHER+SCHUH SWITCH KIT 93-2013
Sprecher+Schuh Starter CA3-9-10 Overload Range: 6-9A 120V Coil 
Sprecher+Schuh Side Mount Auxiliary Contact Block 1NO CA7-PA10 USG
SPRECHER+SCHUH S+S CONTACTOR CS7-40E-120 EQUAL TO ALLEN-BRADLEY 700-CF400D
SPRECHER+SCHUH S+S CONTACTOR CS7-31E-120 EQUAL TO ALLEN-BRADLEY 700-CF310D
SPRECHER+SCHUH S+S CONTACTOR CA7-97-10-480 EQUAL TO ALLEN-BRADLEY 100-C97B10
SPRECHER+SCHUH S+S CONTACTOR CA7-97-10-277 EQUAL TO ALLEN-BRADLEY 100-C97T10
SPRECHER+SCHUH S+S CONTACTOR CA7-97-10-24Z EQUAL TO ALLEN-BRADLEY 100-C97J10
SPRECHER+SCHUH S+S CONTACTOR CA7-97-10-240 EQUAL TO ALLEN-BRADLEY 100-C97A10
SPRECHER+SCHUH S+S CONTACTOR CA7-97-10-220W EQUAL TO ALLEN-BRADLEY 100-C97L10
SPRECHER+SCHUH S+S CONTACTOR CA7-97-10-208 EQUAL TO ALLEN-BRADLEY 100-C97H10
SPRECHER+SCHUH S+S CONTACTOR CA7-97-10-120 EQUAL TO ALLEN-BRADLEY 100-C97D10
SPRECHER+SCHUH S+S CONTACTOR CA7-9-10-277 EQUAL TO ALLEN-BRADLEY 100-C09T10
SPRECHER+SCHUH S+S CONTACTOR CA7-9-10-24 EQUAL TO ALLEN-BRADLEY 100-C09J10
SPRECHER+SCHUH S+S CONTACTOR CA7-9-01-277 EQUAL TO ALLEN-BRADLEY 100-C09T01
SPRECHER+SCHUH S+S CONTACTOR CA7-9-01-240 EQUAL TO ALLEN-BRADLEY 100-C09A01
SPRECHER+SCHUH S+S CONTACTOR CA7-9-01-24 EQUAL TO ALLEN-BRADLEY 100-C09J01
SPRECHER+SCHUH S+S CONTACTOR CA7-9-01-220W EQUAL TO ALLEN-BRADLEY 100-C09L01
SPRECHER+SCHUH S+S CONTACTOR CA7-9-01-208 EQUAL TO ALLEN-BRADLEY 100-C09H01
SPRECHER+SCHUH S+S CONTACTOR CA7-9-01-120 EQUAL TO ALLEN-BRADLEY 100-C09D01
SPRECHER+SCHUH S+S CONTACTOR CA7-85-10-480 EQUAL TO ALLEN-BRADLEY 100-C85B10
SPRECHER+SCHUH S+S CONTACTOR CA7-85-10-277 EQUAL TO ALLEN-BRADLEY 100-C85T10
SPRECHER+SCHUH S+S CONTACTOR CA7-85-10-240 EQUAL TO ALLEN-BRADLEY 100-C85A10
SPRECHER+SCHUH S+S CONTACTOR CA7-85-10-24 EQUAL TO ALLEN-BRADLEY 100-C85J10
SPRECHER+SCHUH S+S CONTACTOR CA7-85-10-220W EQUAL TO ALLEN-BRADLEY 100-C85L10
SPRECHER+SCHUH S+S CONTACTOR CA7-85-10-208 EQUAL TO ALLEN-BRADLEY 100-C85H10
SPRECHER+SCHUH S+S CONTACTOR CA7-85-10-120 EQUAL TO ALLEN-BRADLEY 100-C85D10
SPRECHER+SCHUH S+S CONTACTOR CA7-85-01-480 EQUAL TO ALLEN-BRADLEY 100-C85B01
SPRECHER+SCHUH S+S CONTACTOR CA7-85-01-277 EQUAL TO ALLEN-BRADLEY 100-C85T01
SPRECHER+SCHUH S+S CONTACTOR CA7-85-01-240 EQUAL TO ALLEN-BRADLEY 100-C85A01
SPRECHER+SCHUH S+S CONTACTOR CA7-85-01-24 EQUAL TO ALLEN-BRADLEY 100-C85J01
SPRECHER+SCHUH S+S CONTACTOR CA7-85-01-220W EQUAL TO ALLEN-BRADLEY 100-C85L01
SPRECHER+SCHUH S+S CONTACTOR CA7-85-01-208 EQUAL TO ALLEN-BRADLEY 100-C85H01
SPRECHER+SCHUH S+S CONTACTOR CA7-85-01-120 EQUAL TO ALLEN-BRADLEY 100-C85D01
SPRECHER+SCHUH S+S CONTACTOR CA7-85-00-480 EQUAL TO ALLEN-BRADLEY 100-C85B00
SPRECHER+SCHUH S+S CONTACTOR CA7-85-00-277 EQUAL TO ALLEN-BRADLEY 100-C85T00
SPRECHER+SCHUH S+S CONTACTOR CA7-85-00-24 EQUAL TO ALLEN-BRADLEY 100-C85J00
SPRECHER+SCHUH S+S CONTACTOR CA7-85-00-220W EQUAL TO ALLEN-BRADLEY 100-C85L00
SPRECHER+SCHUH S+S CONTACTOR CA7-85-00-208 EQUAL TO ALLEN-BRADLEY 100-C85H00
SPRECHER+SCHUH S+S CONTACTOR CA7-85-00-120 EQUAL TO ALLEN-BRADLEY 100-C85D00
SPRECHER+SCHUH S+S CONTACTOR CA7-72-10-480 EQUAL TO ALLEN-BRADLEY 100-C72B10
SPRECHER+SCHUH S+S CONTACTOR CA7-72-10-277 EQUAL TO ALLEN-BRADLEY 100-C72T10
SPRECHER+SCHUH S+S CONTACTOR CA7-72-10-240 EQUAL TO ALLEN-BRADLEY 100-C72A10
SPRECHER+SCHUH S+S CONTACTOR CA7-72-10-24 EQUAL TO ALLEN-BRADLEY 100-C72J10
SPRECHER+SCHUH S+S CONTACTOR CA7-72-10-220W EQUAL TO ALLEN-BRADLEY 100-C72L10
SPRECHER+SCHUH S+S CONTACTOR CA7-72-10-208 EQUAL TO ALLEN-BRADLEY 100-C72H10
SPRECHER+SCHUH S+S CONTACTOR CA7-72-10-120 EQUAL TO ALLEN-BRADLEY 100-C72D10
SPRECHER+SCHUH S+S CONTACTOR CA7-72-01-480 EQUAL TO ALLEN-BRADLEY 100-C72B01
SPRECHER+SCHUH S+S CONTACTOR CA7-72-01-277 EQUAL TO ALLEN-BRADLEY 100-C72T01
SPRECHER+SCHUH S+S CONTACTOR CA7-72-01-240 EQUAL TO ALLEN-BRADLEY 100-C72A01
SPRECHER+SCHUH S+S CONTACTOR CA7-72-01-24 EQUAL TO ALLEN-BRADLEY 100-C72J01
SPRECHER+SCHUH S+S CONTACTOR CA7-72-01-220W EQUAL TO ALLEN-BRADLEY 100-C72L01
SPRECHER+SCHUH S+S CONTACTOR CA7-72-01-208 EQUAL TO ALLEN-BRADLEY 100-C72H01
SPRECHER+SCHUH S+S CONTACTOR CA7-72-01-120 EQUAL TO ALLEN-BRADLEY 100-C72D01
SPRECHER+SCHUH S+S CONTACTOR CA7-60-10-480 EQUAL TO ALLEN-BRADLEY 100-C60B10
SPRECHER+SCHUH S+S CONTACTOR CA7-60-10-24Z EQUAL TO ALLEN-BRADLEY 100-C60J10
SPRECHER+SCHUH S+S CONTACTOR CA7-60-10-240 EQUAL TO ALLEN-BRADLEY 100-C60A10
SPRECHER+SCHUH S+S CONTACTOR CA7-60-10-220W EQUAL TO ALLEN-BRADLEY 100-C60L10
SPRECHER+SCHUH S+S CONTACTOR CA7-60-10-208 EQUAL TO ALLEN-BRADLEY 100-C60H10
SPRECHER+SCHUH S+S CONTACTOR CA7-60-10-120 EQUAL TO ALLEN-BRADLEY 100-C60D10
SPRECHER+SCHUH S+S CONTACTOR CA7-60-01-480 EQUAL TO ALLEN-BRADLEY 100-C60B01
SPRECHER+SCHUH S+S CONTACTOR CA7-60-01-277 EQUAL TO ALLEN-BRADLEY 100-C60T01
SPRECHER+SCHUH S+S CONTACTOR CA7-60-01-24Z EQUAL TO ALLEN-BRADLEY 100-C60J01
SPRECHER+SCHUH S+S CONTACTOR CA7-60-01-240 EQUAL TO ALLEN-BRADLEY 100-C60A01
SPRECHER+SCHUH S+S CONTACTOR CA7-60-01-220W EQUAL TO ALLEN-BRADLEY 100-C60L01
SPRECHER+SCHUH S+S CONTACTOR CA7-60-01-208 EQUAL TO ALLEN-BRADLEY 100-C60H01
SPRECHER+SCHUH S+S CONTACTOR CA7-60-01-120 EQUAL TO ALLEN-BRADLEY 100-C60D01
SPRECHER+SCHUH S+S CONTACTOR CA7-60-00-480 EQUAL TO ALLEN-BRADLEY 100-C60B00
SPRECHER+SCHUH S+S CONTACTOR CA7-60-00-277 EQUAL TO ALLEN-BRADLEY 100-C60T00
SPRECHER+SCHUH S+S CONTACTOR CA7-60-00-24Z EQUAL TO ALLEN-BRADLEY 100-C60J00
SPRECHER+SCHUH S+S CONTACTOR CA7-60-00-240 EQUAL TO ALLEN-BRADLEY 100-C60A00
SPRECHER+SCHUH S+S CONTACTOR CA7-60-00-220W EQUAL TO ALLEN-BRADLEY 100-C60L00
SPRECHER+SCHUH S+S CONTACTOR CA7-60-00-208 EQUAL TO ALLEN-BRADLEY 100-C60H00
SPRECHER+SCHUH S+S CONTACTOR CA7-60-00-120 EQUAL TO ALLEN-BRADLEY 100-C60D00
SPRECHER+SCHUH S+S CONTACTOR CA7-43-10-480 EQUAL TO ALLEN-BRADLEY 100-C43B10
SPRECHER+SCHUH S+S CONTACTOR CA7-43-10-277 EQUAL TO ALLEN-BRADLEY 100-C43T10
SPRECHER+SCHUH S+S CONTACTOR CA7-43-10-24 EQUAL TO ALLEN-BRADLEY 100-C43J10
SPRECHER+SCHUH S+S CONTACTOR CA7-43-10-220 EQUAL TO ALLEN-BRADLEY 100-C43L10
SPRECHER+SCHUH S+S CONTACTOR CA7-43-10-208 EQUAL TO ALLEN-BRADLEY 100-C43H10
SPRECHER+SCHUH S+S CONTACTOR CA7-43-10-120 EQUAL TO ALLEN-BRADLEY 100-C43D10
SPRECHER+SCHUH S+S CONTACTOR CA7-43-01-480 EQUAL TO ALLEN-BRADLEY 100-C43B01
SPRECHER+SCHUH S+S CONTACTOR CA7-43-01-277 EQUAL TO ALLEN-BRADLEY 100-C43T01
SPRECHER+SCHUH S+S CONTACTOR CA7-43-01-240 EQUAL TO ALLEN-BRADLEY 100-C43A01
SPRECHER+SCHUH S+S CONTACTOR CA7-43-01-24 EQUAL TO ALLEN-BRADLEY 100-C43J01
SPRECHER+SCHUH S+S CONTACTOR CA7-43-01-208 EQUAL TO ALLEN-BRADLEY 100-C43H01
SPRECHER+SCHUH S+S CONTACTOR CA7-43-01-120 EQUAL TO ALLEN-BRADLEY 100-C43D01
SPRECHER+SCHUH S+S CONTACTOR CA7-43-00-480 EQUAL TO ALLEN-BRADLEY 100-C43B00
SPRECHER+SCHUH S+S CONTACTOR CA7-43-00-277 EQUAL TO ALLEN-BRADLEY 100-C43T00
SPRECHER+SCHUH S+S CONTACTOR CA7-43-00-24Z EQUAL TO ALLEN-BRADLEY 100-C43J00
SPRECHER+SCHUH S+S CONTACTOR CA7-43-00-240 EQUAL TO ALLEN-BRADLEY 100-C43A00
SPRECHER+SCHUH S+S CONTACTOR CA7-43-00-220W EQUAL TO ALLEN-BRADLEY 100-C43L00
SPRECHER+SCHUH S+S CONTACTOR CA7-43-00-208 EQUAL TO ALLEN-BRADLEY 100-C43H00
SPRECHER+SCHUH S+S CONTACTOR CA7-43-00-120 EQUAL TO ALLEN-BRADLEY 100-C43D00
SPRECHER+SCHUH S+S CONTACTOR CA7-37-00-480 EQUAL TO ALLEN-BRADLEY 100-C37B00
SPRECHER+SCHUH S+S CONTACTOR CA7-37-00-277 EQUAL TO ALLEN-BRADLEY 100-C37T00
SPRECHER+SCHUH S+S CONTACTOR CA7-37. 24 volts
SPRECHER+SCHUH S+S CONTACTOR CA7-30-10-480 EQUAL TO ALLEN-BRADLEY 100-C30B10
SPRECHER+SCHUH S+S CONTACTOR CA7-30-10-277 EQUAL TO ALLEN-BRADLEY 100-C30T10
SPRECHER+SCHUH S+S CONTACTOR CA7-30-10-24Z EQUAL TO ALLEN-BRADLEY 100-C30J10
SPRECHER+SCHUH S+S CONTACTOR CA7-30-10-240 EQUAL TO ALLEN-BRADLEY 100-C30A10
SPRECHER+SCHUH S+S CONTACTOR CA7-30-10-220W EQUAL TO ALLEN-BRADLEY 100-C30L10
SPRECHER+SCHUH S+S CONTACTOR CA7-30-10-208 EQUAL TO ALLEN-BRADLEY 100-C30H10
SPRECHER+SCHUH S+S CONTACTOR CA7-30-01-480 EQUAL TO ALLEN-BRADLEY 100-C30B01
SPRECHER+SCHUH S+S CONTACTOR CA7-30-01-277 EQUAL TO ALLEN-BRADLEY 100-C30T01
SPRECHER+SCHUH S+S CONTACTOR CA7-30-01-24Z EQUAL TO ALLEN-BRADLEY 100-C30J01
SPRECHER+SCHUH S+S CONTACTOR CA7-30-01-240 EQUAL TO ALLEN-BRADLEY 100-C30A01
SPRECHER+SCHUH S+S CONTACTOR CA7-30-01-220W EQUAL TO ALLEN-BRADLEY 100-C30L01
SPRECHER+SCHUH S+S CONTACTOR CA7-30-01-208 EQUAL TO ALLEN-BRADLEY 100-C30H01
SPRECHER+SCHUH S+S CONTACTOR CA7-30-01-120 EQUAL TO ALLEN-BRADLEY 100-C30D01
SPRECHER+SCHUH S+S CONTACTOR CA7-30-00-480 EQUAL TO ALLEN-BRADLEY 100-C30B00
SPRECHER+SCHUH S+S CONTACTOR CA7-30-00-277 EQUAL TO ALLEN-BRADLEY 100-C30T00
SPRECHER+SCHUH S+S CONTACTOR CA7-30-00-24Z EQUAL TO ALLEN-BRADLEY 100-C30J00
SPRECHER+SCHUH S+S CONTACTOR CA7-30-00-240 EQUAL TO ALLEN-BRADLEY 100-C30A00
SPRECHER+SCHUH S+S CONTACTOR CA7-30-00-220W EQUAL TO ALLEN-BRADLEY 100-C30L00
SPRECHER+SCHUH S+S CONTACTOR CA7-30-00-208 EQUAL TO ALLEN-BRADLEY 100-C30H00
SPRECHER+SCHUH S+S CONTACTOR CA7-30-00-120 EQUAL TO ALLEN-BRADLEY 100-C30D00
SPRECHER+SCHUH S+S CONTACTOR CA7-23-10-480 EQUAL TO ALLEN-BRADLEY 100-C23B10
SPRECHER+SCHUH S+S CONTACTOR CA7-23-10-277 EQUAL TO ALLEN-BRADLEY 100-C23T10
SPRECHER+SCHUH S+S CONTACTOR CA7-23-10-240 EQUAL TO ALLEN-BRADLEY 100-C23A10
SPRECHER+SCHUH S+S CONTACTOR CA7-23-10-120 EQUAL TO ALLEN-BRADLEY 100-C23D10
SPRECHER+SCHUH S+S CONTACTOR CA7-23-01-480 EQUAL TO ALLEN-BRADLEY 100-C23B01
SPRECHER+SCHUH S+S CONTACTOR CA7-23-01-277 EQUAL TO ALLEN-BRADLEY 100-C23T01
SPRECHER+SCHUH S+S CONTACTOR CA7-23-01-24Z EQUAL TO ALLEN-BRADLEY 100-C23J01
SPRECHER+SCHUH S+S CONTACTOR CA7-23-01-240 EQUAL TO ALLEN-BRADLEY 100-C23A01
SPRECHER+SCHUH S+S CONTACTOR CA7-23-01-220W EQUAL TO ALLEN-BRADLEY 100-C23L01
SPRECHER+SCHUH S+S CONTACTOR CA7-23-01-208 EQUAL TO ALLEN-BRADLEY 100-C23H01
SPRECHER+SCHUH S+S CONTACTOR CA7-23-01-120 EQUAL TO ALLEN-BRADLEY 100-C23D01
SPRECHER+SCHUH S+S CONTACTOR CA7-16-10-277 EQUAL TO ALLEN-BRADLEY 100-C16T10
SPRECHER+SCHUH S+S CONTACTOR CA7-16-10-240 EQUAL TO ALLEN-BRADLEY 100-C16A10
SPRECHER+SCHUH S+S CONTACTOR CA7-16-10-24 EQUAL TO ALLEN-BRADLEY 100-C16J10
SPRECHER+SCHUH S+S CONTACTOR CA7-16-10-120 EQUAL TO ALLEN-BRADLEY 100-C16D10
SPRECHER+SCHUH S+S CONTACTOR CA7-16-01-480 EQUAL TO ALLEN-BRADLEY 100-C16B01
SPRECHER+SCHUH S+S CONTACTOR CA7-16-01-277 EQUAL TO ALLEN-BRADLEY 100-C16T01
SPRECHER+SCHUH S+S CONTACTOR CA7-16-01-24 EQUAL TO ALLEN-BRADLEY 100-C16J01
SPRECHER+SCHUH S+S CONTACTOR CA7-16-01-220W EQUAL TO ALLEN-BRADLEY 100-C16L01
SPRECHER+SCHUH S+S CONTACTOR CA7-16-01-208 EQUAL TO ALLEN-BRADLEY 100-C16H01
SPRECHER+SCHUH S+S CONTACTOR CA7-16-01-120 EQ