Kev txawj ntse lub cev muaj zog tiv thaiv relays: saib xyuas, tiv thaiv, tswj
Fais motors tej zaum yuav hu ua "quarterback" ntawm kev lag luam. Kev txawj ntse lub cev muaj zog tiv thaiv relays tuaj yeem pom tau tias yog kab ntawm kev tiv thaiv rau kev saib xyuas, suav thiab sib txuas lus muaj peev xwm overcurrent lossis overload. Kev tiv thaiv lub cev muaj zog yog siv nyob rau hauv thaj chaw (xws li HVAC), cov chaw lag luam thiab kev lag luam. Cov kws tshaj lij hluav taws xob xav tau kev nkag siab zoo txog lub hauv paus ntawm kev tiv thaiv lub cev muaj zog thiab kev siv thev naus laus zis los txo cov nqi zog, txhim kho kev nyab xeeb los ntawm kev saib xyuas tej thaj chaw deb, thiab txuag lub zog thaum sib kis.
Hauv kev lag luam, tus lej ntawd nce mus txog 70%. Ntawm no, peb yuav tham txog tiam tom ntej ntawm kev tswj lub cev muaj zog.
Lub cev muaj zog tiv thaiv relay yog dab tsi thiab nws ua haujlwm li cas?
Intelligent tiv thaiv relays ntes cov kev txhim kho ntawm ib qho teeb meem los ntawm kev paub me me deviations nyob rau hauv tam sim no, voltage, tsis kam, los yog kub. Ib yam li lub ntsuas kub tswj kev tswj hwm ntawm koj lub tsev lub tshuab cua txias lossis lub cub tawg, kev tiv thaiv relay pab tiv thaiv lub cev muaj zog los ntawm cua sov, uas ntxiv rau kev puas tsuaj rau lub cev muaj zog, kuj tuaj yeem ua rau muaj kev puas tsuaj rau sab saud thiab qis hauv cov khoom siv hluav taws xob. Kev tswj lub cev muaj zog thiab lawv cov circuits yuav tsum yog nyob rau hauv cov kws tshaj lij hluav taws xob hu ua "coordinated" xeev. Saib Short Circuit Protection thiab Kev Ntsuam Xyuas Kev Nyab Xeeb.
Ntse Relays rau Lub Chaw Tswj Tsav Tsheb
Relays tuaj yeem pom nyob txhua qhov chaw hauv lub chaw tswj hwm lub cev muaj zog (tseem hu ua MCC), qhov twg cov khoom siv hluav taws xob xws li AC thiab DC tsav muaj qhov sib txawv ntawm AC thiab DC voltages. Xav txog MCCs raws li cov ntaub ntawv loj, lossis cov khoom sib txuas nrog cov tub rau khoom. Lawv tsis tsuas yog sau nrog relays. Lawv kuj muaj cov hluav taws xob hluav taws xob, cov pib, cov contactors, fuses thiab lwm yam khoom siv hluav taws xob faib thiab tswj cov khoom. Nws yog qhov nkag siab tias cov khoom siv thiab cov khoom siv yuav tsum tau sib koom ua ke. Koj yuav pom cov chaw tswj lub cev muaj zog hauv txhua hom kev lag luam thiab kev lag luam ib puag ncig.
Overcurrent thiab overload relays
Qee zaum "short circuit", "overload" thiab "overcurrent" yog siv sib hloov. Txawm li cas los xij, lawv tso cov kev xav tau sib txawv ntawm cov relays thiab lwm yam khoom siv hluav taws xob. Ob qho tib si overcurrent thiab overload relays yog tsim los tiv thaiv lub cev muaj zog lossis tsis ua haujlwm. Cov kws tshaj lij hluav taws xob siv cov relays los daws cov overcurrents thiab overloads nyob rau hauv ntau txoj kev. Saib peb cov yam ntxwv ntawm kev tiv thaiv luv luv lossis kev tiv thaiv overload rau cov hauv paus. Yeej, overcurrent relays tiv thaiv qhov tam sim no los ntawm ntau tshaj (piv txwv li, mus dhau) qhov kev lees paub tam sim no ntawm ib lub cuab yeej. Lawv feem ntau ua haujlwm tam sim ntawd txiav tawm tam sim no. Lub "short circuit" yog ib qho overcurrent. Ntawm qhov tod tes, overload relays tiv thaiv cov motors los ntawm kev khiav, lub sijhawm ntev overcurrents, uas tuaj yeem ua rau lub cev muaj zog, yog li lo lus "overload".
Kev tiv thaiv lub cev muaj zog: ntse txav rau cov tuam txhab tsim vaj huam sib luag
Integrated motor control nrog ntse relays embeds tag nrho cov yuav tsum tau saib xyuas, xam thiab kev sib txuas lus rau hauv no "ntse" relay. Qhov no txuag qhov chaw hauv vaj huam sib luag hluav taws xob. Qhov no tuaj yeem thov rau cov neeg tsim vaj huam sib luag uas tab tom nrhiav txoj hauv kev kom txuag tau qhov chaw lossis ntxiv lwm cov yam ntxwv uas cov thawj coj hauv tsev thiab cov neeg cog lus hluav taws xob xav tau. Piv txwv li, cov neeg cog lus yuav raug nug kom suav nrog ntau lub tshuab hluav taws xob, kev tswj teeb pom kev zoo thiab cov keyboards hauv vaj huam sib luag rau kev tsim kho tshiab lossis hloov kho qhov system. Qhov no yuav txhais tau tias hloov lossis hloov kho qhov chaw- thiab lub zog txuag hluav taws xob kom haum rau cov lus qhia tshwj xeeb.