GEIS220YDOAS1AJ/IS220YDOAS1A电力变压器变压器额定电流I1N/I2N,单位为A、kA。是变压器正常运行时所能承担的电流，在三相变压器中均代表线电流。I1N=SN/U1NI2N=SN/U2N对三相变压器：I1N=SN/[sqrt(3)U1N]I2N=SN/[sqrt(3)U2N]U1N为正常运行时一次侧应加的电压。U2N为一次侧加额定电压、二次侧处于空载状态时的电压。单位为V。相变压器中，额定电压指的是线电压。SN为变压器额定容量,单位为VA、kVA、MVA,N为变压器的视在功率。通常把变压器一、二次侧的额定容量设计为相同。I1N为正常运行时一次侧变压器额定电流。I2N为一次侧变压器额定电流。单位为A功率分三种功率，有功功率P、无功功率Q和视在功率S。电压与电流之间的相位差(Φ)的余弦叫做功率因数，用符号cosΦ表示，在数值上，功率因数是有功功率和视在功率的比值，即cosΦ=P/S三种功率和功率因素cosΦ是一个直角功率三角形关系：两个直角边是有功功率、无功功率，斜边是视在功率。有功功率平方+无功功率平方=视在功率平方。三相负荷中，任何时候这三种功率总是同时存在：视在功率S=1.732UI有功功率P=1.732UIcosΦ无功功率Q=1.732UIsinΦ功率因数cosΦ=P/SsinΦ=Q/S三相电阻类电功率的计算公式=1.732*线电压U*线电流I（星形接法）=3*相电压U*相电流I（角形接法）三相电机类电功率的计算公式=1.732*线电压U*线电流I*功率因数COSΦ（星形接法）=3*相电压U*相电流I*功率因数COSΦ（角形接法）三相交流电路中星接和角接两个功率计算公式可互换使用，但相电压、线电压和相电流、线电流一定要分清。MINARIKELECTRIC170-027?1SIGNALISOLATOR*USED*TRU-FLOSV61-120VAC*USED*FESTODNU-40-400-PPV-?A*USED*PDIPDTF-140R-8M-C-?HC*USED*MICROSWITCHLSZ3K*USED*LOTOF20AMP1-502632-000RECPET***EBULKHEADFIBEROP...LOTOF2ALLENBRADLEY700-HN101SERIESB*NEWOUTOFB...LOTOF2POTTER&BRUMFIELDR10-E1-W2-V18512VDC*USED*SELECONTROLDIT701DIGITALEXPANSIONOUTPUTMODULE*N...BALLUFFBNS-519-100-R-1?2*USED*MINARIKELECTRIC170-027?1SIGNALISOLATOR*USED*TRU-FLOSV61-120VAC*USED*FESTODNU-40-400-PPV-?A*USED*PDIPDTF-140R-8M-C-?HC*USED*ABBSACE-S315ACIRCUITBREAKER*USED*MERLINGERIN24469C20ACIRCUITBREAKER*USED*SENCON11-CTR-PS*USED*NORGRENMK01CEA25ALPA*USED*EG&GROTRONFANSU2B5*USED*ITTK3AB774MAGNETICVALVE*USED*SICKVT180-P410*USED*WILKERSONFRP-96-639*NEWINBOX*DEVILBISSCOUPLINGAD-11*NEWINFACTORYBAG*ALKONCORP.JF2FLOWCONTROLVALVE*USED*BIMBA1215-NRQAIRPNEUMATICCYLINDER*USED*ORA***HXL6463415V150W*NEWINABOX*TELEMECANIQUELA3DR4*USED*LOTOF2TELEMECANIQUELA4DFB*USED*JOHNSONCONTROLST-4002*USED*MACPME-112DA*USED*REDINGTONR2-1526*USED*BIMBANR-173-DXP*USED*BIMBA171-D*USED*TURCKBi5-G18-AN7*USED*COSELLDA10F*USED*TURCKRK4T-4*USED*CUTLER-HAMMERE57SAL12A2*USED*LOTOF3ALLENBRADLEY1495-G3SIZE3*USED*FESTOLR-D-7-MIDI*USED*MOELLERDIL00M-G*USED*IDECSA1E-PP1*USED*ALCOCONTROLSEK-084*USED*ALCOCONTROLSEK-165*USED*LOTOF2CLAROSTAT73JA*USED*JIUNFARNA15801000AIRCYLINDER*USED*NUMATICS11SAD44AE*USED*STRUTHERSDUNNB255XCXP110V-120V*USED*WARNERELECTRICMCS-804*USED*NUMATICS228-690B*USED*TELEMECANIQUEZCK-J1H7*USED*CUTLER-HAMMERCIRCUITBREAKEREHD2015*USED*SKINNERVALVEV55DB2100*USED*SCHRADERBELLOW74304-8115*USED*BANNER***2A312FQD*USED*DELTROLCONTROLS20114-8410A110VDC*USED*SQUARED8502-SB0-2SIZE0*USED*DELTROLCONTROLS20114-81*USED*AUBURNI-31*USED*NORGRENK41DA00*USED*AEROVOXZ62P4450M32*USED*TRIADMAGNETICSF-212Z*USED*BALLUFFBES516-325-BO-C*USED*GOULDNJ10-30GM-WS*USED*FESTOADVUL816-30PA*USED*MAC45A-L00-DFBA-1B?A*USED*LOTOF2TELEMECANIQUELA1LB015*USED*TELEMECANIQUELA1LC012*USED*TELEMECANIQUEXS1M12PA370*USED*CANFIELDCONNECTOR330-758-8299*USED*TURCKR***40-2M/S90*USED*SIGNAPORERESOURCES,INC.PE-5/300C*USED*SOLASLS-12-017*USED*ADVENTTOOLS381812-1CSNPSF*USED*ADVENTTOOLS381838-1CSNPSF*USED*SOLAELETRIC83-24-212-2*USED*HONEYWELLPA404B10232*USED*WESTLOCKCONTROLSCORP.1065*USED*LOTOF8OPTO22IDC5LOTOF2OPTO22IAC24*USED*HUBBELLHBL2430SR2*USED*MICROSWITCH910AEA011OMEGALV-90*USED*EFECTORKB2020ABOA*USED*TURCKRK50-4M*USED*SYRELECPWPS*USED*AEGDAP216/AS-BDAP-216*REPAIRED*FACTSENGINEERINGS2-25P-DTE*USED*LOTOF2RDI214BS*USED*NUMMIWQ-S-TCCWIREGUIDE*USED*)