Lub kaw lus tswj hwm ntawmlub cev muaj zogNws muaj cov keyboards, fuses, main thiab auxiliary contactors, relays, temperature, induction devices, thiab lwm yam. Qhov no nyuaj heev. Muaj ntau hom kev ua yuam kev, thiab feem ntau yuav tsum tau siv cov duab kos los txheeb xyuas thiab daws teeb meem.
Feem ntau, koj yuav tsum tau ua tib zoo saib xyuas kom sab hauv thiab sab nraud ntawm lub thawv tswj kom huv si thiab qhuav, tsis muaj dej lossis roj av. Tsis tu ncua (txhua lub lim tiam) siv lub kiv cua me me los tshuab cov hmoov av ntawm cov khoom thiab cov davhlau ya nyob twg thiab kab hauv lub thawv, lossis siv txhuam dipped hauv cov tshuaj ntxuav hluav taws xob los txhuam lawv kom huv si, kom tsis txhob cuam tshuam rau kev ua haujlwm lossis kev rwb thaiv tsev ntawm lub contactor thiab relay. Rau cov thawv tswj nrog cov resistors qhuav, feem ntau tsis txhob tua lub qhov hloov cua sov ntawm qhov xav tau. Lub thawv kuj tseem yuav tsum tau grounded kom ntseeg tau kom tiv thaiv kev poob hluav taws xob.
Tshawb xyuas qhov nruj ntawm cov xov hlau thiab cov ntsia hlau hauv lub thawv tsis tu ncua (txhua hli) kom tiv thaiv cov xov hlau thiab cov ntsia hlau kom tsis txhob xoob. Tshawb xyuas seb cov khoom xws li cov hloov pauv, cov contactors, relays, thiab lwm yam puas tsuaj lossis hlawv, thiab seb qhov xwm txheej ua haujlwm ntawm txhua qhov khoom thiab qhov pib, nres, thiab kev sib txuas lus puas yog qhov ib txwm muaj. Khaws cov kev sib cuag txav mus los thiab zoo li qub ntawm tus contactor kaw thiab sib cuag zoo kom tsis txhob hlawv lub cev muaj zog vim tsis sib cuag zoo. Yog tias qhov chaw sib cuag zoo thiab tsuas yog dub, koj tuaj yeem so nws nrog daim ntaub ntxhib. Tsis txhob yooj yim txhuam cov txheej hlau tiv taus cua sov ntawm qhov chaw, txwv tsis pub nws yuav ua rau lub neej ntawm kev sib cuag luv luv; Yog tias qhov chaw sib cuag raug tshem tawm hnyav heev, koj tuaj yeem siv daim ntawv xuab zeb "0" los ua kom nws du. Cov neeg sib cuag uas txav mus los thiab zoo li qub yuav tsum tswj hwm kev sib cuag kab lossis kev sib cuag ntawm qhov chaw, tsis yog qhov chaw sib cuag. Qhov xwm txheej ntawm kev sib cuag tuaj yeem kuaj xyuas los ntawm kev muab ib daim ntawv ntawm cov neeg sib cuag uas txav mus los thiab zoo li qub. Yog tias nws tsis raug clamped nruj thaum nyiam, nws txhais tau tias qhov kev sib cuag lossis lub caij nplooj ntoo hlav yuav tsum tau kho lossis hloov. Qhov no yuav tsum tau ua tib zoo saib xyuas. Hauv cov xwm txheej me me, kev sib cuag tsis zoo yuav tsim kom muaj kev tiv thaiv loj (tam sim no), uas txhais tau tias qhov thauj khoom nce ntxiv, ua rau lub relay tiv thaiv overload tripping. Hauv cov xwm txheej hnyav, nws yuav ua rau lub cev muaj zog khiav hauv txoj kev tsis txaus thiab hlawv tawm.
Thaum hloov cov relays thiab contactors, koj yuav tsum tau them sai sai rau qhov ua haujlwm voltage ntawm lub electromagnetic coil kom tsis txhob hlawv lub coil vim yog hloov tsis raug. Feem ntau, muaj 24V, 220V thiab 380V. Rau lub sijhawm relays, ntxiv rau kev them sai sai rau qhov yuav tsum tau ua ntawm lub coil voltage, koj yuav tsum tau qhia meej txog chav hloov sijhawm (teev, feeb, vib nas this) thiab ntau yam ntawm lub sijhawm relay; seb qhov teeb tsa tam sim no ntawm lub thermal relay puas tsim nyog thiab tsim nyog.
Rau cov cav uas pib siv txoj kev star-delta (Y-△) (kev hloov pauv qeeb li 5 vib nas this), xyuas seb qhov pib hloov pauv puas yog qhov qub. Feem ntau, cov chaw tsim khoom muaj cov cai nruj heev rau lub voj voog pib ntawm lub cav (piv txwv li tus naj npawb ntawm kev pib ib feeb), thiab yuav muaj cov ntawv ceeb toom ntawm lub thawv tswj pib kom ceeb toom cov neeg siv kom tiv thaiv lub cav kom tsis txhob raug puas tsuaj vim yog pib ntau zaus. Tib lub sijhawm, nws kuj yog los tiv thaiv qee cov khoom siv hluav taws xob hauv lub thawv tswj pib (xws li cov reactors pib, thiab lwm yam) los ntawm kev kub thiab hlawv. Yog li ntawd, rau cov kab ke tswj lub cev muaj zog uas pib thiab nres ntau zaus lossis muaj cov dej ntws loj, lub voj voog tshuaj xyuas thiab txij nkawm yuav tsum luv dua. Tsis tu ncua xyuas qhov kev ua haujlwm tiv thaiv ntawm lub thermal overload relay (koj tuaj yeem tig lub kaw lus me me liab nyob ib sab ntawm nws) thiab nws cov nqi ua haujlwm teeb tsa yuav tsum tsis pub tshaj qhov nqi tam sim no ntawm lub cav nameplate kom ntseeg tau tias nws tuaj yeem ua lub luag haujlwm ntawm kev tiv thaiv overload.
Lub sijhawm tshaj tawm: Lub Yim Hli-14-2024