ABB SDCS-CON-3A
ABBSDCS-CON-3ASDCS-FIS-3AABBSDCS-CON-3ASDCS-FIS-3AABBSDCS-CON-3ASDCS-FIS-3A***提供:PLC可编程控制系统,分散控制系统(DCS)安全仪表系统(SIS),ESD系统,振动监测系统,汽轮机控制压缩机组控制系统(CCS)等各类工控系统部件系统里的PLC模块,DCS模块,CPU模块,IO模块,DO模块,AI模块,DI模块,网络通信模块,以太网模块,运动控制模块,模拟量输入模块,模拟量输出模块,数字输入模块,数字输出模块,冗余模块,电源模块,继电器输出模块,继电器输入模块,处理器模块在一般的电力变压器中,绕组电阻压降很小,可以忽略不计,因此在原边绕组中可以认为电压U1=E1。由于副边绕组开路,电流I2=0,它的端电压U2与感应电动势E2相等,即U2=E2。所以由上面的原、副边感应电动势公式得:公式中K为原边电压U1和副边电压U2之比,这个K的数值称为变压器的变压比。由上是表明,变压器原、副边绕组的电压比等于原、副绕组的匝数比,因此如果要原、副边绕组有不同的电压,只要改变他们的匝数即可。当N1>N2时,K>1,变压器***;当N1<N2时,K<1,变压器升压。对于已经支撑的变压器而言,其K为定值,故副边电压和原边电压成正比,也就是说副边电压随着原边电压的升高而升高,降低而降低。但加载原边绕组两端的电压必须为额定值。因为,当外加电压比额定电压略有超过时,原边绕组中通过的电流将大大增加,如果把额定电压为220V的变压器错误的接到380V的线路上,则原绕组的电流将急剧增大,致使变压器烧毁。把变压器的副边绕组负载接通后,在副边电路中有电流I2通过,此时,称变压器负载运行。由于副边绕组中电流I2也将在铁芯中产生磁通(即自感应现象),这种磁通对于原边电流所产生的磁通而言,是起去磁作用的,即铁芯中的磁通应为原边、副边绕组中电***生的磁通的合成。但在外加电压U1和电源频率f不变的条件下,由近似公式:上式中可以看出,合成磁通Φ应基本保持不变。因此,随着I2出现,原边绕组中通过的电流I1将增加,这样才能使得原绕组中的磁通以免体校副绕组的磁通,另一面维持铁芯中的合成磁通保持不变。由此可知,变压器原边电流I1的大小是由副边电流I2的大小来决定的。从能量观点来看,变压器原边线圈从电源吸取的功率P1应等于副边线圈的输出功率P2(忽略变压器的线圈电阻和磁通的传递损耗),即:P1=P2或I1U1=I2U2所以变压比:由此可见,变压器原边、副边的电流比与他们的匝数比或电压比成反比。例如一台变压器的匝数N1<N2,是升压变压器,则电流I1>I2;如果绕组匝数N1>N2为***变压器,则电流I2>I1。也就是说,电压高的一边电流小,而电压低的一边电流大PARKERD600S*USED*BRYANTBJ3150*USED*TOPAZT1055DD14463*USED*SIEMENS2AB4121-0RA*USED*PARKERSR1130E62DRIVECONTROLLER*USED*BANNERMINI-SCREENMSR3624Y*USED*BANNERMINI-SCREENMSE1224*USED*DONGANA06-SA6TRANSFORMER*USED*GOULDAS-B551-001*USED*JAMESBURYSP18SR80-B*USED*TOLTECULTRA-SONICPAC1250*USED*DREXELBROOK700-202-10*USED*EATONCUTTLER-HAMMERDIFFUSEDREFLECTION1351B-6511*US...MDI3100NO-120A*USED*ANDERSONST-250-A10-300F*USED*REXROTH5711100200*USED*HEIDENHAINLS106/336958-40*NEWOUTOFBOX*TURCKBi5-G18-AN6X*USED*INSTRUMENTTRANSFORMER58RL-251*USED*LOTOF2BATTENFELDGLOUCESTERENGINEERINGD40074104-A...KESSLER-ELLISMS287MC2A3REV.FCONTROLLER110VAC*USED*UNIVERSALSYSTEMSUE5100B-M00-CLCARDREADERCONTROLBO...OMRONCQM1-IA121*USED*BAUMERIFRM18A1101/L*USED*NO***ON2302SDDIGITALREADOUT276883A*USED*ROSEMOUNT3051CA1A22A1AA0?078B4L4M5*NEW*MENNEKESTYPE136716-9H/380-415*USED*TPCWIRE&CABLE83406REV.B4P6FTFEMALE*USED*MICROMOTION1004302REV.A*NEWOUTOFABOX*LEESON175076NEMA56C-FACECONVERSIONKIT*NEWINA...BRADHARRISON41103MINI-CHANGERECEPT***E*NEWOUTOF...BLACOHFLUIDCONTROLS1020T-5*NEWINBOX*LOTOF2BATTENFELDGLOUCESTERENGINEERINGD40074104-A...KESSLER-ELLISMS287MC2A3REV.FCONTROLLER110VAC*USED*UNIVERSALSYSTEMSUE5100B-M00-CLCARDREADERCONTROLBO...OMRONCQM1-IA121*USED*CUTLERHAMMER8532B-6501*NEWINABOX*BAUMERIFRM18A1101/L*USED*NO***ON2302SDDIGITALREADOUT276883A*USED*ROSEMOUNT3051CA1A22A1AA0?078B4L4M5*NEW*MENNEKESTYPE136716-9H/380-415*USED*TPCWIRE&CABLE83406REV.B4P6FTFEMALE*USED*LOTOF5KILLARKFCL-GF*NEWINABOX*MICROMOTION1004302REV.A*NEWOUTOFABOX*LEESON175076NEMA56C-FACECONVERSIONKIT*NEWINA...BRADHARRISON41103MINI-CHANGERECEPT***E*NEWOUTOF...BLACOHFLUIDCONTROLS1020T-5*NEWINBOX*CHROMALOXRAD-3113-BRADIANTHEATERLOTOF5AUTOMATIONVALVE7019-9DB48V*USED*GECR115B4*USED*ASCO099257-001D120V*USED*MICROSWITCHFE-LC3-CC*USED*OPCON1451B-6507*USED*TELEMECANIQUELC1D25008120V*USED*LEVITON41108-RW5*NEWINAFACTORYBAG*PARKERS6MICROSTEPDRIVE87-011279-01E*NICE*MOOREINDUSTRIESRESISTANCEBULBTRAN***ITTER200-236-20...DECCO9-1367M115V(RED)COIL*USED*MICROSWITCH2PH1PALMPUSHBUTTON*USED*GETJJ436VY4003POLE400AMPSCIRCUITBREAKER*NEW*POTTER&BRUMFIELDPRD-7AY0-240240VRELAY*USED*MAC225B-117AAAA*NEWINABOX*POTTER&BRUMFIELDT91S1D32-24240VAC*NEWOUTOFABOX...FURNASELECTRICCO.52PA8A3SERIESB*NEWOUTOFBOX*AREALIGHTINGRESEARCHP105AMINI-PHOTOCONTR?OL*NEWIN...ROSEMOUNTANALYTICALD0-1CONDUCTIVITYCELL05000703865LOTOF6OMRONMY4N-D224VDC*USED*PARKER200767PISTOLKIT*USED*LOTOF2FUJIELECTRICSC-E0524-26V*NEWINABOX*NO***ON275852D*USED*NO***ON222800C33FT*USED*MINARIKPCM21010A*USED*GENERALCONTROLSL49PA832PRESSURECONTROL*USED*FESTOMS4-LR-1/4-D7-A?S*NEWINABOX*ATC8033AL01FX3DBXXPROXIMITYSWITCH*USED*HUBBELLMCMA1412MICRO-QUICKFEMALER/APLUG*NEWINA...FAIRCHILDTA6000-502*NICE*SQUAREDC2936-S1-C33A480VCOIL*USED*SPECTRUMSOI-260A-V040P-?P1-XOPERATORPANEL*USED*CINCINNATIELECTROSYSTEMS4161-4-5-.8-+/-?N127-SEGMENT...UNIVERSALSYSTEMSUE5100B-M03CARDREADERCONTROL,BOAR...LOTOF5NUMATICS130-389P110-120/60COIL*USED*CARLING3XC53SWITCH*NEWINAFACTORYBAG*BANNERRWB4*NEWINBOX*REXROTH4WE6R60/EW110N9?K4*NEWOUTOFBOX*FANUCDCSERVOMOTORA06B-0642-B005*NEWOUTOFBOX*BIMBA121.5-NRQPNEUMATICCYLINDER*NEWOUTOFABOX*GUARDIANELECTRICA420-066461-00*USED*CANTEX000600686*USED*DWYER1823-10*USED*AK1-AN-3H*USED*PPDIPDAH*USED*YORK031-00932-002CONTROLRELAYBOARD*NEWOUTOFABO...METTLERTOLEDO88570001000*NEWINABOX*ITWRANSBURG78084-50CABLE9040LOWVOLTAGE*NEW*CKDSOLENOIDAS-20-N101*NEWINBOX*NCCSOLIDSTATETIMERT1K-5-461*NEWOUTOFBOX*LOTOF23RAYPAK007443FKIT-GASKETBURNERSEAL*NEWIN...SIEIINCREMENTALENCODERAHE-7-C-DN-1024?-CI*NEWOUTOF...ORMECQTG910PCBOARD*USED*LOTOF3GRACOREVERSIBLESPRAYTIP625*ORIGINALPACKA...ALTECHCORP.50D-SUBSOCKET*USED*PHOENIXCONTACTQUINT-DIODE/40REDUNDANCYMODULE*USED*FISHERCB7CU-1*NEWOUTOFBOX*ORMECSYSTEMCORP.PCB020APCBOARD*USED*ORBITMOTIONSRB3100/5/CPCBOARD*USED*TURCKNI10-G18-AP6X-B?134140MM*USED*NICHOLSONCDH203TM03/4"SANITARYSTEAMTRAPHORIZONTA.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