MPL-B330P-MJ74AA

更新日期：2019年04月16日
有效期：360天
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规格：MPL-B330P-MJ74AA
所属行业：五金原材料-> 废金属-> 废镍
关键字：MPLB330PMJ74A MPLB330PMJ74A MPLB330PMJ74A

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MPL-B330P-MJ74AA

漏电保护开关检测的是输入共模电流，也就是所说的对地漏电流，检测漏电流的电流互感器是同时穿过了R/S/T三根火线和零线，在没有漏电流的情况下，不论接三相负载还是接单相负载，R/S/T和N线这4根线中流过的电流之和总是为零。当负载侧有对地短路现象或者对地有较大的电容时，输出侧的电流就会通过大地返回电网，此时流过电流互感器的电流之和不为零，这个电流就称之为漏电流。当检测到的电流大到一定程度就会触发保护开关脱扣。

图（一）

使用变频器对地漏电流的产生原因分析

在应用中为何会产生较大的漏电流

普通电机的绕组和机壳之间存在着较大的分布电容，在电网供电的情况下，电源线上只有50Hz的工频电压，由于频率很低，通过分布电容的漏电流很小。但在用变频器驱动电机时，由于变频器输出的是几kHz的PWM(高频脉宽调制）的电压波形，输出电压是在0V到530V之间快速跳变的脉动电压，该脉动电压产生谐波，这些谐波对于同样的电机同样的分布电容，漏电流会增大百倍以上，因此容易发生一运行变频，漏电开关就跳闸现象。

MODICON 140XBP01000 NEW BACKPLANE 140XBP01000

GE FANUC TGT-3X6L-1-0-BD REMAN. TGT3X6L10BD

GE FANUC TGT-3X6L-1-0-BD NEW TGT3X6L10BD

ALLEN BRADLEY 1771-HSN NEW 1771HSN

ALLEN BRADLEY 1771-OYC NEW 1771OYC

FANUC A20B-2902-0070ED A20B29020070

CUTLER-HAMMER E50DT1 NEW LIMIT SWITCH E50DT1

ABB 3HAC24241 NEW CONTROL BOARD 3HAC2424-1

ABB CA5-01 NEW CONTACT BLOCK CA501

ALLEN BRADLEY 1771A1B NEW 1771-A1B

GATES 8M-56S-36 SK NEW POLY CHAIN 8M56S36SK

ADVANCE 79W4091-001 NEW BALLAST 79W409100

COOPER SMAN LPJ-250SP NEW LPJ250SP

S ETRON FRS-R-150 TIME DELAY E 150A 600V NIB

COOPER SMANN S ETRON FRS-R-175 600V 17 E

GE FANUC TGT-S000-1-1-BA REMAN TGTS00011BA

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GE FANUC WHEDCO 78004654B REMAN

ABB 3HAB8802-1 /2B Servo Drive Unit 3HAB88021 NEW

ABB 3HAB2207-1/3 DRIVE BOARD 3HAB22071 NEW

ABB YT213001BC NEW DRIVE UNIT YT213 001-BC

MITSUBISHI PROGRAMMABLE CONTROLLER A1SX40 NIB

ABB E31978 NEW PURGING CONTROL BOARD E-31978

ABB E32767 NEW PURGING CONTROL BOARD E-32767

ABB 3HAC36191 NEW BOARD 3HAC3619-1

ABB E32767 PURGING CONTROL BOARD E-32767

ECLIPSE AUTOMATIC GAS SHUT-OFF VALVE 2008AT 2" NPT NEW

ENERPAC 8 TON BOTTLE JACK EBJ8GC NIB

TOKIMEC STACK VALVE TGMC-5-PT-FH-50 NIB

HOLOKROME SOCKET HEAD SCREW 1-1/4-7 X 4-1/2 NEW 72406

UNBRAKO SOCKET HEAD CAP SCREW 1 1/4-7 X 4 NIB

5 UNBRAKO SOCKET HEAD CAP SCREW 1 1/4-7 X 4-1/2 NIB

DAYTON VERSATILE KOMMERCIAL PRESS-FIT BALL LOCK NIB

RELIANCE ELECTRIC 0-51865-1 NEW PC BOARD 0518651

RELIANCE ELECTRIC 0-51862-1 NEW 0518621

RELIANCE ELECTRIC 0-51831-1ED 0518311

RELIANCE ELECTRIC 0-51884 REMAN. MODULE 051884

RELIANCE ELECTRIC 0-51829-2 REPAIRED 0518292

RELIANCE ELECTRIC 0-51831ED PC BOARE 051831

CUTLER-HAMMER C306GT3B NEW RELAY C306GT3B

BACHARACH CD832 REMAN. CONTROL MODULE CD832

ALLEN BRADLEY 70A27 NEW COIL 70A27

ALLEN BRADLEY 1492-PDM3141 NEW POWER BLOCK 1492PDM3141

ALLEN BRADLEY 1492-CB2F250 NEW 1492CB2F250

PARKER PS734P NEW METAL BOWL PS734P

NAMCO EB551-75043 NEW COIL EB55175043

MODICON ASB805016 REMAN. AS-B805-016

ALLEN BRADLE 1771-ASB BED MODULE 1771ASBB

MODICON AS-B814-108 REMAN. ASB814108

LENZE EVS9328-ES SERVO CONTROLER NEW EVS9328ES

SQUARE D 9001 NEW H BUTTON UNIT TYPE UO-3 9001

GE F-3175400 NEW RENEWAL COIL F3175400

SQUARE D 9998 TA-81 NEW CONTACT KIT TYPE 9998TA81

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ATO MUFFLER M05 NEW 1/2''

MODICON ASW808002 NEW AS-808-002

MODICON ASW952012 NEW AS-W952-012

MODICON 416NHM30030 NEW 416 NHM 300 30

RED CROWN MARPOSS F10 PENCIL PROBE NEW F10

PARKER REGULATOR 15R113FB NEW 1/4''

ABB 3HAC14363-1 NEW CONTROL BOARD 3HAC143631

BOCA SUPER VGA VIDEO ADAPTER NEW SVGA25

WIKA PRESSURE GAUGE 50233530 NEW

ALLEN BRADLEY 1785-L40E SER. E NEW 1785L40E

WIKA PRESSURE GAUGE 9767150 NEW

ALLEN BRADLEY CD-254 NEW COIL CD254

SIEMENS 3UA52001E NEW OVERLOAD RELAY 3UA52 00-1E

GOULD MODICON AS-8534-000 CONNECTOR NEW AS8534000

THOMAS&BETTS F30040 NEW RECEPTACLE F30040

DURANT 49750400 NEW 15V POWER SUPPLY 49750400

A.B. CHANCE MULTI RANGE VOLTAGE DETECTOR

ALLEN BRADLEY 1746-IV8 SER A NEW 1746IV8

HONEYWELL 3LS1 NEW LIMIT SWITCH 3LS1

ALLEN BRADLEY 1747-PCIL SER A NEW 1747PCIL

OHMITE RLS150 NEW CERAMIC RHEOSTAT RLS150

ASCO 302315 NEW REBUILD KIT 302315

OHMITE 0549 NEW CERAMIC RHEOSTAT 0549

PASS & SEYMOUR 670 NEWO 1 POLE SWITCHES 670

ASCO 302319 NEW REBUILD KIT 302319

ALLEN BRADLEY 802T-C NEW LIMIT SWITCH 802TC

OHMITE RKS400 NEW CERAMIC RHEOSTAT RKS400

IFM EFECTOR IGA2005-ABOA PROXIMITY NEW IG0337

PAYNE ENGINEERING 18D-2-10HI NEW 18D210HI

NAMCO EA080 22100 NEW LIMIT SWITCH EA080-22100

APPLETON CPSR-23 RECEPTACLE NEW CPSR-23

THOMAS & BETTS EVER-LOK 8003N NEW

FALK COVER-GRID 1040T10 NEW 0775803

ABB 3HAB 7231-1 NEW 3HAB72311 DSQC320

FALK COVER-GRID 1030T10 NEW 0775802

SPECTRA NC-A 94V-0 BOARD NCA94V0

SPECTRA 3500-103 BOARD NEW 3500-103

SPECTRA 3500-102 BOARD NEW 3500-102

SPECTRA 3500-103 BOARD 3500103

SPECTRA 3500-100 BOARD 3500100

SPEEDAIRE REGULATOR 42M15 NEW

FALK 1080T HUB 0705011 NEW

FIREYE 72DIR1 REMAN. INFRARED AMPLIFIER 72DIR1

HONEYWELL DR4500 NEW INPUT KIT DR4500

AUTOTECH CONTROLS E7N-D0360-5TPFEED E7ND03605TPFE

FERRAZ SHAWMUT X095263 50A 660V E NEW BOX OF 10

CUTLER HAMMER 477B477G05 NEW RENEWAL PARTS 477B477G05

GOULD SHAWMUT A100P1600-4TI E NEW A100P16004TI

OHMITE 11111 NEW POWER TAP SWITCH 111-11

POTTER & BRUMFIELD PRD YO-240V CONTROL NEW PRD YO240V

POTTER & BRUMFIELD PRD YO-240 CONTROL NEW PRD YO240

OHMITE RHS1K0 NEW MODEL H RHS1K0

3 CLAROSTAT VK100N5 RESISTORS NEW VK100N5

ALLEN BRADLEY Z34040 NEW RENEWAL PART Z-34040

GREENLEE 250340LSRL7KFZ AMMETER NEW 250340LSRL7KFZ

EDWARDS 349 BACK BOX NEW 349

DONALDSON DURAMAX P163324 FILTER ELEMENT NEW P163324

PHILIPS ECG RLY1041 NEWTIME DELAY RELAY RLY1041

上一个：MPL-B330P-MJ72AH

下一个：MPL-B330P-MK72AA

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