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進口德國allectra 301-KAPM-060-PAIR1-10M
產(chǎn)地 | 進口 | 加工定制 | 是 |
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歐戟進口HEGENSCHEIDT全系列1014562-4
歐戟進口HEGENSCHEIDT全系列1014562-4
上海歐戟貿(mào)易有限公司
歐戟控制設備(上海)有限公司是歐美備件服務供應商。專注于進口機電設備、儀器儀表等進口設備。
我們的客戶來自汽車(一汽大眾、一汽解放、北京奔馳、奇瑞),汽車下游(大陸汽車、卡斯馬、華域、麥格納),鋼鐵(武漢鋼鐵、山西太鋼、寶鋼),食品(百威、旺旺),能源(中石化、中石油)等多個行業(yè)。
公司總部位于德國法蘭克福,美國芝加哥和中國上海設立分部,可直接與德國、法國、意大利瑞士等千余家廠家進行高效快捷的溝通合作。
美國Progress Chemical Inc.化學制劑中國區(qū)代理
優(yōu)勢品牌
傳感器:HBM、Baumer、KIMO、GE、Kistler、Lorenz、SenoTec
開關:SUCO、Euchner、Layher、Schmersal、Contrinex、Schneider
工業(yè)閥門:Parker、Bucher、Moog、IMAV、AVENTICS、Gemue
工業(yè)泵:Parker、Bucher、Moog、Kracht、Vogel、Hawe
電機驅動:Bosch、Bonfiglioli、Jahns、VEM
夾具模具:Zimmer、Schunk、OTT、PHD、robohand、Berg、Rud
儀器儀表:Wika、Jumo、GMC、Phoenix、GOSSEN、Warmbier
電氣元件:Siemens、B&R、Vipa、Puls、Murr
上海歐戟貿(mào)易有限公司
歐戟控制設備(上海)有限公司是歐美備件服務供應商。歐戟優(yōu)勢供應德國工控產(chǎn)品。只要是德國及歐洲的產(chǎn)品,只需您提供產(chǎn)品的名稱、型號及規(guī)格,我們都能在德國為您買到,并送貨到您手上,低價優(yōu)購。
HEGENSCHEIDT | 1014562-4 |
HEGENSCHEIDT | 10324279 |
BORRIES | Nr.53500074 |
BORRIES | Nr.53400080 |
BORRIES | SM224L[x]-11 Nr.100024848 |
BORRIES | Nr.51900004 |
BORRIES | Nr.22300983 |
Demag | AUH30DD ZNA80B4 |
HPI | P1 AAN 2022 CL30 A01N |
SFS | 90000600 |
SFS | 90000562 |
BICKER | BEA-550H |
ASSA ABLOY | effeff 934U-0940335Q91 |
Sommer | CORO460200 |
Sommer | BDI26000 |
Sommer | BKOL50020 |
Sommer | BKST16390 |
Sommer | CDKPZ00500 |
Sommer | CDSPR00160 |
Sommer | BGUM020600 |
Sommer | CDSDA00160 |
Sommer | CQU42190 |
Sommer | COR0480150 |
Sommer | COR0370200 |
Sommer | BFST16150 |
Sommer | CFED26000 |
Sommer | BSKT16020 |
Sommer | CFED26010 |
JANITZA | UMG 604 E, Art.-Nr.: 52.16.002 |
ganter | GN 603-63-M8-DBL |
ganter | GN 603-63-M6-DBL |
ganter | 115-SG-14-NI |
ganter | GN563-40-M6 |
JANITZA | UMG 508 with software and cable |
as str?mungstechnik | DH-DK-PE-001-F1/2"-F1/4" |
Pantron Instruments GmbH | IR-P10-15 |
Pantron | IT-P10-5 |
Tollok | TLK110 20X28 |
BERNSTEIN | KIB-M05PS/001-KLSM8 6502999018 |
HERZOG | 8-2743-353157-1 |
HERZOG | 8-2743-353177-9 |
HERZOG | 8-2743-352017-8 |
Pneumax | 0PXS164 |
motrona | FM260 |
Aerzen | 168705000 |
moog | D661-4586E |
TEE | Q2E 112 M4C 41 |
hydromec | P050FB03CORB3 |
hydromec | P050FB03CORB3 and MOTOR 0,55Kw B14 230/400V 50Hz IP55 80 |
INA | PCF45 INA |
INA | RCJTY30-N INA |
Wachendorff Elektronik GmbH & Co. KG | WDG58B-2000-ABN-124-L3 |
Kuka | 00-171-202 |
Kuka | 00-169-213 |
Kuka | 00-106-814 |
Kuka | 00-168-334 |
Kuka | 00-170-525 |
Kuka | 00-228-327 |
Kuka | 00-246-872 |
Kuka | 00-198-616 |
Kuka | 00-192-297 |
Kuka | 00-192-295 |
Duerr | 5M7071001 |
Duerr | 5M7071002 |
JVD | D20 D=20mm, φ B h5=10mm |
GUETHLE | HK 10W 051/28 S 27 |
Phoenix | Nr.2902856 |
Schonbuch | IL4CT1214 |
Mahr GmbH | 5001037 |
MAEDLER | 61561600 |
JBW | 402.600.0100 |
HERZOG | 8-1777-313359-2 |
HERZOG | 8-3124-338569-7 |
HERZOG | 7-9832-167286-4 |
HERZOG | 7-6293-167260-9 |
Vahle | 600096; KSW 4/40-1 HS |
schaeffler | 625-2RS |
Staubli | RBE03.6904/0 |
Staubli | RBE03.6904/3 |
Staubli | RBE03.6904/45 |
Staubli | RBE03.6904/6 |
CAPTRON | CHT3-151P-H/TG-SR |
KTR | RUFLEX-3-3TF-15-D40 |
Knoll | TG40-28/22533 |
Galtech | 1 SPA 4.2 S-10GG0 |
parker | PGP505A0080CQ2D2NJ7J5B1B1 Nr.3319111041 |
Murrelektronik GmbH | Nr.5546000 |
Murrelektronik GmbH | Nr.5546100 |
PMA Prozess- und Maschinen-Automation GmbH | KS90-104-0000E-000 |
WEIDEMANN | FT-DRE5K13/5AG24/WKG |
centerline | ALGD2C13FF DN80 PN16 |
esta | ArtNr:01000126 |
Stemmann | LP60SL 40 WEGE,626225,439134 |
HIRSCHMANN | GO 6 WF 932-447-100 |
Schlegel | LXJLASCE-SPS |
SPM | SPM 45022-L |
SPM | SPM 42000 |
Chr. Mayr GmbH + Co. KG | Art.-Nr.:7029104 Type 100.111S |
FSG | 1708Z03-096.052 Typ:PW70/A/IP40 Drehwinkel:40° |
CEAG | 1386-1451251 |
ELEKTROBA | MAS-2 DC2000V 40-60-80A Oeffnungs und 1 schliesskontakt |
ABB | 768956 |
ODU | 180.570.000.307.000 |
ODU | 180.575.000.307.000 |
Verder | 850.31 |
BALLUFF | BES 516-3 |
Balluff GmbH | BTL5-F-2814-1S |
BALLUFF | BTL2-GS10-0600-A |
Balluff GmbH | BTL5-E10-M0500-P-S32 |
BALLUFF | BKS-S 32M-20 |
Werthenbach | P-RV22L-0.5bar |
Werthenbach | MD-012-2-WR033-19-2 |
Werthenbach | ECU/S |
Werthenbach | CKCBXCN |
Werthenbach | P-RVV20SR-WD |
Werthenbach | DGMFN3Z-PZW-41 |
Werthenbach | 0 532 002 007 |
Phoenix | 2882640 |
m&h | Produktions-Messtaster PP41.00 |
SIKO | DA02-0027 |
parker | F12-040-MF-IV-K-000-000-0 3799526 |
SELET | B50EN187V03 |
ODU | 170.545.700.201. 000 |
ODU | 180.545.000.307. 000 |
ODU | 656.610.008.020. 104 |
ODU | 656.611.008.020.104 |
STAHL | 150578 Typ : 8570/11-306 |
STAHL | 130819 8040/1180X-10L07BA08 |
STAHL | 150577 Typ : 8570/15-306 |
HECO | DTS 1-1050 |
HECO | Filte r tube Micro-line 1050 Std. 3, 400μm |
HECO | Filte r tube Micro-line 1050 Std. 3, 150μm |
Nass Magnet | 108-030-0469. |
SCHMERSAL | IFL 10-30L-11TP-1766 2M |
KINETROL | 074-100. |
PMA | BGN-S48T |
PMA | BGN-R48 |
PMA | BSH-R48 |
PMA | BSS-48 |
SEG | XE2 |
KALEJA | Bez. -ELR-50-30 Nr.02.06.201 |
HUBER+SUHNER | 74Z-0-0-21 |
FIMI | 4.520.143.100 |
FIMI | 4.289.23.110 30-38-4P1 |
FIMI | 4.289.242.111 |
FIMI | 4.379.203.100 |
FIMI | 4.289.239.111 |
FIMI | 4.289.228.105 |
FIMI | 4.289.240.103 |
FIMI | 4.289.208.106 WR25 |
Rossmanith | NR.1WA3SP115 |
DEUBLIN | 1005-020-045 |
Ropex | 740202 RES-402/230VAC |
Becker | U 3.6 SA G002116 |
Matador | NR.70050005 |
parker | PQDXXA-Z01 |
Orbitalum | 790 052 488 |
Sommer | SF155MD4-C |
SCHUNK | PGN-plus 125-1 0371103 |
Elektra-Lindau | 65-0238 |
PMA | KSVC-101-00111-U00 |
hydac | ETS 3868-5-000-000 |
Megatron | RP 20/7168 R1K 2X1K W3% |
Foxboro | P0916GH |
Foxboro | P0916GF |
JUMO | ATH-22,60000204,913530,603026/0202-1-025-30-0-00-20-13-46-30 |
Murr | 85069 |
SCHUNK | SRU-plus 30-W-180-3-4-M8 ID:0361824 |
SCHUNK | PHE 64-20 ID:0300974 |
SCHUNK | SRU-plus 40-W-180-3-8-M8 ID:0362224 |
SCHUNK | SRU-plus 40-W-180-3-8 ID:0362222 |
SCHUNK | PGN-plus 80-2-AS ID:0371451 |
SCHUNK | ACE-Z-050 ID:0324452 |
Murr | MSBL0-TFC10.0 ART.335471 |
PMA Prozess- und Maschinen-Automation GmbH | KS40-100-0000E-000 |
Beta | 1760/IR1600 |
Beta | 1472AU;014720100 |
hydac | 0240D003BH4HC |
JAHN | WSAG13/R3/8KEG 265452000000 |
JAHN | WSAG10/R1/4KEG 265446600000 |
hydac | ETS 1701-100-000 |
PULSOTRONIC | 9984-2065 |
B&R | 7DO138.70 |
B&R Industrie-Elektronik GmbH | 7CM211.7 |
B&R Industrie-Elektronik GmbH | 7cp476.60-1 |
B&R | 3TB170.91 |
B&R Industrie-Elektronik GmbH | 0TB103.91 |
B&R | X20TB12 |
B&R | 7IF371.70-1 |
B&R Industrie-Elektronik GmbH | 0TB704.9 |
B&R | 7DI138.70 |
LTA | 8000-16000 |
Verder | 139.0012 |
Verder | 129.0012 |
WENGLOR | LD86PCV3 |
Tognella | FT257/5-3/4 |
Knoll | TF40 NR.7979 |
Knoll | 128278 |
Eurotec | MNF532024DC-LED |
Sommer-automatic GmbH & Co. KG | MGP804N |
ebmpapst | R2E250-AV65-01 |
Bosch Rexroth | 3842515260 |
Bosch Rexroth | 3842515265 |
Shape | L000-S010-GC Mk.3 Solenoid Assemblies |
SED | 024.85.001 |
SED | 024.16.710.2 |
DICKOW PUMPEN | 00653327,433-R |
DICKOW PUMPEN | 00653332,433-L |
Walther | 11-019-2-WR533-AAAA |
Walther | LP-019-2-WR026-11-1 |
Sommer | CISIS4B100 |
Sommer | CISOS4B160 |
legrand | 37407 |
legrand | 37431 |
legrand | 4881 |
legrand | 37389 |
legrand | 51640 |
SCHMIDT-KUPPLUNG | P 2880.55 |
SCHUHMANN | TR4.00UC |
Peter Hirt | T502F |
kendrion | WSB009.501611 INSTEAD OF WS9B/29 |
GEFRAN | F000934 40T-48-4-00-RR-0-2-0-0 |
perma-tec | 162432387 |
Trelleborg | TG41 00700-T40N |
CESARE | TYPE SFA, DN 3/4"FB NR.KBS00304 |
RITTAL | SK3108.100 |
BALLUFF | BTL5-P1-M0100-B-S32 |
turian | GR25FLH |
turian | GR20FLH |
GOSSEN | DPM 24/96-2000 D UH 24V DC |
habermann | HA2911 |
habermann | HA7018 |
Walther | MD-025-2-WR548-OV |
WALTHER-PRAEZISION Carl Kurt Walther GmbH & Co. KG | LP-007-1-WR013-11 |
WALTHER-PRAEZISION Carl Kurt Walther GmbH & Co. KG | LP-012-1-WR021-11 |
Walther | LP-019-1-WR026-11 |
WALTHER-PRAEZISION Carl Kurt Walther GmbH & Co. KG | LP-019-1-WR021-11 |
MINIMOTOR | MC 320 P2T - B5 402476 |
PILZ | PZE X4VP C 0,5/24VDC 4n/o fix 787580 |
Gemue | 610 15D 7 15611/N |
RAPA | M20 DC24V 14W IP54 |
Maximator | S25D-D5 |
Maximator | S100D-D5 |
Ruebsamen | SH 250L |
KTR | Rotex38S |
PMA | TB40-100-0000D-000 |
PMA | TB45-110-00000-000 |
PMA Prozess- und Maschinen-Automation GmbH | KS40-102-0000D-000 |
hilscher | NANL-B500E-RE |
motrona | CA306 |
Vahle | 170010, USK 25 K4 |
Vahle | 121502 , MZ-KF-A-100 |
Vahle | 316634, S2 LAUFSCHIENE 4 METER |
Vahle | 157588, UMAS 12 HS 241 |
Vahle | 171126,U 25/50C-6 PE |
Vahle | 154439/00-5, KST 55 PE |
Vahle | 170595, UV 25 |
Vahle | 154438/00-5, KST 55 PH |
Vahle | 315050, VS 2 |
Vahle | 316636, S 2 LAUFSCHIENE 6 METER |
Vahle | 171026,U 25/50C-6 PH |
Vahle | 171024, U 25/50 C -4 PH |
Vahle | 171124, U 25/50 C -4 PE |
Apex Tool | 48-TX-30-MM |
Bucher | WDWVPB-2ND0-10-1 |
Bucher | DWVPX-2-10-SM-2 |
DOSAPRO | 980053400 |
RHEINTACHO | SDP0FB0006 14261481 |
Hoentzsch | CV-120 Velocity calibration |
Hoentzsch | A000/560 flowtherm NT |
Hoentzsch | ZS25GE-mn80/100/p10 |
CEAG | GHG-418-1101-R-0001 |
WACHENHAUSEN | GHM 7.1 R, 24V DC Art.-Nr.: 01M06081024 |
Mitutoyo Deutschland GmbH | 572-600 |
Weigel | 645.4024.1000 DAS10-40/P1R |
Procentec | Bestell-nummer 17010 |
kendrion | 3207332b40 |
Reggiana Riduttori | RR310DFS/41,76(old RR180DF/41,8 154-1088 18DF/1216) |
Verder | 850.8074,VA25 PP,PP,VT,TF |
Verder | 810.6896,VA15 PP PP TF TF |
Verder | 859.0024 |
Verder | 810.6772,VA15.PP.PP.TF.TF |
Verder | 850.3100,VA25 PP,PP,TF,TF |
Verder | 810.4033,VA50PP,PP,TF,TF |
Verder | 810.5903,VA40,PP.PP.TF.TF |
ganter | 950-AL-250-B22-A |
KRAUS&NAIMER | KG20 T103/78 KL51 |
KRAUS&NAIMER | KG41 T103/78KL11 |
Kraus & Naimer | KG80 T103/D-A094 STM |
KRAUS&NAIMER | KG160 T203/04E |
Klaschka | AIN1/410ca-1.60-115/230VAC |
HBM | 4-3301.0082 |
AK Regeltechnik | 38041 |
brinkmann | TC 63/560-MVX+314 |
Antal | PDP2CAN/M V3.053 |
ganter | GN 543.3-23-G1 |
speck | BADU 21-50/43 G, 230 V |
Ahlborn | ZA2690UK |
Ahlborn Mess- und Regelungstechnik GmbH | MA25902A |
Ahlborn Mess- und Regelungstechnik GmbH | ZA1909DK5 |
Ahlborn Mess- und Regelungstechnik GmbH | ZA7838AK |
Ahlborn Mess- und Regelungstechnik GmbH | ZB2490HS |
habermann | HA9605,EN 61558-2-6 EN61000-3-2 EN 61131-2 CE |
G-BEE | 33-1 (PN40) |
BORRIES | 75300477 |
BORRIES | 53400080 |
BORRIES | 53500074 |
item | 0. 0.442.14 |
item | 0. 0.442.15 |
GROMELLE | HZ05012V0 Nr.57003384 |
GROMELLE | HZ05011V0 Nr.57003378 |
Gemue | 615 15D 1375211/N |
SCAIME | K-K25/N120-G21 |
EPHY-MESS GmbH | SN70133 1PT100/B-20x6-M10x1-2/3,5-N-O |
TASO | NKP.200601.H04.641/1 |
LEINE LINDE | 549849-01 |
Baumer | RTD 1 B14 Y 3 P1 7 10 0.5 D2SR12 E 1 |
Desoutter | 6159155770 |
Desoutter | 6151655120; EME24-20 OF |
SCHMERSAL | IFL 10-30L-11TP |
SCHMERSAL | IFL 10-30L-10TP |
MADAS | RG/2MCS DN25 P1 |
Mahle | PI 2005-058; 77665136 |
Mahle | PI 5105 PS 6; 77943509 |
MVA Vertriebs | TPL 3.12,Nr:TPL0004011 |
Vester | 6357-90010-3022,PSV-40-40-X/W-3-P |
EXPERT | MF4-16,0-7,2-TM-M8P-1C 500410 |
parker | F11-019-RB-CN-K-000 |
Stoerk | ST181-VRXV.XXF |
Ruebsamen | SH 250L |
Tognella | FT1251/5-01-G1/4 |
IFSYS | WSB007 Artikel C Nr.: 19013 |
MEGA | TYPE 450 |
B&R | 7DO138.70 |
B&R Industrie-Elektronik GmbH | 7CM211.7 |
B&R Industrie-Elektronik GmbH | 7cp476.60-1 |
B&R | 7DI138.70 |
B&R | 7IF371.70-1 |
TEKEL | TKE45.F.360.B/0.11/30.K4.10.PL10.20.U.. |
kendrion | 7614124E00.400 (for 7760024A15) |
Scaldalai | cod. 1820 220/230V |
Juergen Jordan GmbH | KA177269 ICP22DI450000 |
GUNNAR BECKMAN | TYPE:OFS-75 ART NO:52 088 22 |
Hilma | Old type.: 2237 310 New type:2237-4106;4107 |
halder | 22560.0432 |
TECNA | 60019366 |
nuova general | N.013425804; Typ:D7,Dis.N 041-1 |
Dr. Thiedig | PEO2.50.25; 82433 |
PMA | BGN-S48T |
PMA | BGN-R48 |
PMA | BSH-R48 |
PMA | BSS-48 |
Kniel | CAD15.1,6,173-002-02 |
Hanchen | 5003910A |
parker | 341N35-2995-4818653D |
Schimpf | 02-25/4400 |
EMHART | M153 504 |
EMHART | M156 397 |
EMHART | M066 643 |
EMHART | M156 680 |
Lumberg | RST 5-RKWT 5-228/3 M |
Contrinex | DW-AD-621-M5 |
Contrinex | DW-AS-621-M5 |
Contrinex | DW-AD-703-M12 |
Duerr | 5M7071002 |
Duerr | 5M7071001 |
Hawe | MV64C |
Votech | DUOTOV-90/736 |
HPI | P1 BAN 3031 HL 10B03 |
POWER-HYDRAULIK GmbH | PR304-59-S |
POWER-HYDRAULIK GmbH | 300er:75,92*1,78 |
Aris | VA02.L0005 |
Aris | 117.00501 |
Aris | 117.00588 |
Aris | VA02.L0001 |
Aris | 117.00652 |
parker | VB6012C |
Meusburger | H 4062/796/1496 |
INA | ZKLF40115-2Z-2AP |
INA | ZKLF60145-2Z |
INA | ZKLF40115-2Z |
Schmitz | RS 24mm Durchm.medium/24RS15MO |
Saia-Burgess | TE180204101 |
Buschjost | 8320700 |
Walther Flender | WF-TM NANO |
SCHUETZE | W3/FZ-Duo 310032 0.5mm |
Sasse | 1360.991621 |
Mahle | PIS 3170 PN40 G1/8 Nr.0.369.970 |
Helios | 16401012 |
RICKMEIER | R2-1,5/12-5 MO-Z-W-G1/2-R |
Woerner | KTR-B/2/V800/T5/T5/X6 |
Optima | OPTIMA part-No:10-993-112 T-Glyd ring |
Optima | OPTIMA part-No:24180004 feather key |
Baumer | HOG 71 DN 1024 TTL(Nr:2334957) |
PMA | KS40-102-0000E-000 |
PMA | KS45-113-10000-000 |
Hasco | Z1227 /16/24 |
SCHUNK | MPG32-AS-2 0340041 |
Adixen | AMD1,Nr:305230 |
AutomationX | aXlink100 |
SARTORIUS | PR5210/00 |
Liqui Filter GmbH | 6110010,filtervlles P 100-700mm *250m |
Phoenix | 1771749 |
Phoenix | 1658532 |
Phoenix | 1653838 |
Phoenix | 1642140 |
Phoenix | 1405617 |
Phoenix | 2981363 |
Phoenix | 1689080 |
Phoenix | 2949994 |
Phoenix | Nr.1656482 |
Phoenix | 1771969 |
Phoenix | 2981457 |
Phoenix | 5146662 |
SAUTER | 129400; EK 502-446-L0-00 |
SAUTER | 124165 |
B&R | X20DO9322. |
hydac | 0030 D 010 BN4HC,1250486 |
hydac | 0330 D 010 BN4HC,1250493 |
hydac | 0110 D 010 BN4HC /-V ,1251438 |
brinkmann | TH1407A470+001 380V |
brinkmann | TH180/650+001 380V |
Dopag | C-402-25-00 |
R. Birkenbeul GmbH & Co.KG | 5AP160M-6 7.5KW |
Walther | 11-019-2-WR533-AAAA |
HASBERG | 0.03mm*12.7*5M |
HASBERG | 0.06mm*12.7*5M |
HASBERG | 0.05mm*12.7*5M |
HASBERG | 0.20mm*12.7*5M |
HASBERG | 0.04mm*12.7*5M |
HASBERG | 0.02mm*12.7*5M |
HASBERG | 0.08mm*12.7*5M |
HASBERG | 0.10mm*12.7*5M |
HASBERG | 0.07mm*12.7*5M |
HASBERG | 0.30mm*12.7*5M |
HASBERG | 0.15mm*12.7*5M |
KUEBLER | 8.A020.3B52. 1024 |
Fife | SE-22 |
EGE | IDU 080 GSOP P31264 |
EGE | IGMU 015 GSOP P31263 |
EA | ZA65-ED55 |
EA | ED620552 |
Euchner | ZSM2101-103126 |
Krautzberger | KAA-1300 400BAR |
Krautzberger | 1300-080-0854 |
Krautzberger | 1300-010-0679 |
BALLUFF | BOS 26K-PA-1HC-S4-C |
Spieth | MSA 50.1,5 |
Spieth | MSA 35.1,5 |
Spieth | MSR 60.1,5 |
BIKON-Technik GmbH | BIKON 4000-070-110 |
BIKON | BIKON 1006-090-130 |
BIKON | Bikon 1006-110-155 |
BIKON | BIKON 4000-065-095 |
BIKON | BIKON 1006-140-190 |
Phoenix | QUINT-ORING/24DC/2X40/1X80 NR 2902879 |
hydac | ETS326-2-100-000 |
hydac | ZBE06 |
HBM | 1-C2/500N |
在很多的家用電器上(如自動洗衣機、電爐加溫等等),為了防止電流過大而損傷電器,因此在電器上面安裝了一些繼電器。繼電器是一種電子控制器件,實際上是用較小的電流去控制較大電流的一種“自動開關”。那么繼電器的是如何工作的?其作用又有哪些?下面一起來看看:
1.基本概念
繼電器(英文名稱:relay)是一種電控制器件,是當輸入量(激勵量)的變化達到規(guī)定要求時,在電氣輸出電路中使被控量發(fā)生預定的階躍變化的一種電器。它具有控制系統(tǒng)(又稱輸入回路)和被控制系統(tǒng)(又稱輸出回路)之間的互動關系。通常應用于自動化的控制電路中,它實際上是用小電流去控制大電流運作的一種“自動開關”。故在電路中起著自動調(diào)節(jié)、安全保護、轉換電路等作用。
19世紀30年代,美國物理學家約瑟夫·亨利在研究電路控制時利用電磁感應現(xiàn)象發(fā)明了繼電器。最早的繼電器是電磁繼電器,它利用電磁鐵在通電和斷電下磁力產(chǎn)生和消失的現(xiàn)象,來控制高電壓高電流的另一電路的開合,它的出現(xiàn)使得電路的遠程控制和保護等工作得以順利進行。繼電器是人類科技的一項偉大發(fā)明創(chuàng)造,它不僅是電氣工程的基礎,也是電子技術、微電子技術的重要基礎。
圖1 繼電器
2.電路符號
繼電器的文字符號為“K”,圖形如圖2所示。在電路圖中,繼電器的接點可以畫在該繼電器線圈的旁邊,或在遠離該繼電器線圈的地方,而用編號表示它們的彼此關系。
圖2 繼電器的電路符號
3.主要作用
(1)放大:例如,靈敏型繼電器、中間繼電器等,用一個很微小的控制量,可以控制很大功率的電路。
(2)綜合信號:例如,當多個控制信號按規(guī)定的形式輸入多繞組繼電器時,經(jīng)過比較綜合,達到預定的控制效果。
(3)自動、遙控、監(jiān)測:例如,自動裝置上的繼電器與其他電器一起,可以組成程序控制線路,從而實現(xiàn)自動化運行。
(4)擴大控制范圍:例如,多觸點繼電器控制信號達到某一定值時,可以按觸點組的不同形式,同時換接、開斷、接通多路電路。
4.基本結構
圖3 繼電器的結構
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