High-voltage switchgear assemblies yog cov cuab yeej siv ua tiav los ntawm cov chaw tsim khoom thiab sib sau ua ke ntawm - qhov chaw los tsim lub siab -voltage fais fab faib tshuab. Cov kab ke no faib cov hluav taws xob tseem ceeb rau hauv ntau qhov sib txawv; nyob rau hauv txhua chav tsev, cov khoom xws li Circuit Court breakers, disconnect keyboards, ntsuas transformers, raws li zoo raws li kev tiv thaiv, tswj, thiab ntsuas cov cuab yeej, yog centrally mounted nyob rau hauv ib tug integrated txee. Ntau yam xws li switchgear txee tuaj yeem ua ke los tsim kom tiav lub zog xa hluav taws xob rau cov chaw tsim hluav taws xob thiab cov chaw nres tsheb. Cov khoom tsim lub hom phiaj kom muaj kev nyab xeeb, txhim khu kev qha, thiab ua haujlwm zoo ntawm cov khoom siv. Nws cov qauv tsim yuav tsum muaj kev xav txog ntau yam xws li kev ua haujlwm hluav taws xob, cov qauv siv tshuab, kev tiv thaiv kev nyab xeeb, thiab kev hloov pauv ib puag ncig. Ntawm cov kev txiav txim siab no, "Tsib Tiv Thaiv" kev cuam tshuam kev ua haujlwm yog ib qho kev ntsuas tseem ceeb rau kev tiv thaiv ob qho khoom siv thiab cov neeg ua haujlwm, thaum tiv thaiv kev ua haujlwm tsis raug.
Lub siab -voltage switchgear los ua ke feem ntau muaj ob peb lub ntsiab compartments: lub busbar compartment, Circuit Court breaker compartment, relay compartment, thiab cable compartment. Lub busbar compartment pab kom sib sau thiab faib hluav taws xob hluav taws xob; lub Circuit Court breaker compartment tsev cov tub ntxhais hloov khoom siv; lub cable compartment pab txhawb kev sib txuas ntawm cov kab hluav taws xob tawm; thiab lub relay compartment haum rau kev tiv thaiv thiab tswj cov cuab yeej.
Qhov "Tsib Tiv Thaiv" cuam tshuam nrog siab -voltage switchgear sib dhos muaj xws li: tiv thaiv kev qhib lossis kaw ntawm kev sib txuas ntawm cov keyboards (lossis cais cov ntsaws) thaum thauj khoom; tiv thaiv qhov kev sib tsoo qhib lossis kaw ntawm Circuit Court breakers; tiv thaiv qhov kev kaw ntawm lub Circuit Court breaker thaum lub hauv paus hloov mus rau hauv qhov chaw kaw; tiv thaiv qhov xwm txheej kaw ntawm qhov hloov pauv hauv av thaum lub zog hluav taws xob; thiab tiv thaiv kev tsis sib haum xeeb nkag mus rau hauv qhov chaw muaj zog.
Lub "Tsib Tiv Thaiv" kev sib cuam tshuam cov txheej txheem tuaj yeem muab faib ua peb hom: tshuab, hluav taws xob, thiab kev sib xyaw ua ke. Cov txheej txheem no feem ntau yog siv los ntawm qhov yuav tsum tau muaj kev sib cuam tshuam ntawm cov tshuab sib txuas- lossis, hloov pauv, electromagnetic locking systems- uas tswj kev ua haujlwm ntawm lub Circuit Court breaker, disconnect keyboards, grounding switches, thiab txee qhov rooj. Tshwj xeeb tshaj yog, rau kos- tawm hom hluav taws xob hluav taws xob, "Tsib Tiv Thaiv" cuam tshuam cov yam ntxwv suav nrog: tso cai rau kev ntxig lossis tshem tawm cov txuas txuas txuas ntxiv tsuas yog thaum lub tsheb thauj khoom tawg tau tso rau hauv txoj haujlwm "test"; tiv thaiv kev tshem tawm ntawm lub tsheb thauj mus los ntawm txoj haujlwm "ua haujlwm" thaum lub tshuab hluav taws xob raug kaw lawm; xauv lub tsheb thauj mus los los tiv thaiv nws txoj haujlwm "ua haujlwm" thaum twg qhov hloov hauv av raug kaw; interlocking lub grounding hloov nrog lub cable compartment cover phaj kom paub meej tias lub txee lub qhov rooj yuav qhib tau tsuas yog tom qab lub Circuit Court tau zoo grounded; thiab siv cov shutters tsis siv neeg mus rau mechanically cais cov kos- tawm Circuit Court breaker los ntawm cov neeg nyob ruaj ruaj ntawm cov energized busbar seem.
Cov kev ua haujlwm ib txwm muaj rau kev ua tiav ntawm siab -voltage switchgear feem ntau suav nrog: qhov txwv siab tshaj plaws rau qhov ntsuas kub ib puag ncig feem ntau tsis tshaj 40 degree, thiab qis dua feem ntau ntawm -5℃(uas yuav txuas mus rau -15℃hauv cheeb tsam txias txias); qhov siab feem ntau tsis tshaj 1000 meters; ib hnub nruab nrab ambient av noo tsis tshaj 95%, thiab ib lub hli nruab nrab tsis tshaj 90%; seismic siv tsis ntau tshaj 8; thiab kev teeb tsa hauv qhov chaw tsis muaj hluav taws kub, muaj kev phom sij tawg, muaj kuab paug hnyav, tshuaj lom neeg corrosion, lossis khaus vibration.
Cov khoom siv hluav taws xob tseem ceeb nyob hauv lub txee hloov pauv feem ntau suav nrog: siab -voltage circuit breakers (xws li lub tshuab nqus tsev lossis SF6 hom), disconnectors, tam sim no transformers (CTs), voltage transformers (PTs), earthing switches, surge arresters, high-voltage fuses, load switches, and similar devices. Cov khoom siv thib ob (cov cuab yeej pabcuam) hauv lub txee feem ntau yog siv rau kev saib xyuas, tswj, ntsuas, thiab kev tiv thaiv; Piv txwv xws li: relays, lub zog ntsuas, ammeters, voltmeters, wattmeters, microprocessor-raws li kev tiv thaiv cov khoom siv, teeb liab teeb, pushbuttons, fuses, thiab lwm yam.
Cov txheej txheem ua haujlwm rau kev ua tiav ntawm high-voltage switchgear feem ntau suav nrog lub zog-on (energizing) thiab fais fab -off (kev tu) kev ua haujlwm. Cov kauj ruam dav dav rau lub hwj chim- ntawm kev ua haujlwm yog raws li hauv qab no: paub meej tias lub ntiaj teb hloov pauv tau qhib → thawb lub tshuab tshem tawm (trolley) mus rau hauv txoj haujlwm kuaj thiab txuas cov txuas txuas txuas ntxiv → thawb lub tshuab tshem tawm mus rau hauv qhov chaw pabcuam → kaw lub tshuab hluav taws xob. Cov kauj ruam dav dav rau lub hwj chim- tawm (kev tu) kev ua haujlwm yog raws li hauv qab no: qhib lub Circuit Court breaker → tshem lub tsev mus rau qhov chaw xeem → disconnect lub thib ob plugs → tshem lub tsev tag nrho tawm ntawm lub txee → kaw lub ntiaj teb hloov.
Cov khoom tsim los ntawm kev ua tiav siab -voltage switchgear cov rooj sib txoos feem ntau muaj cov yam ntxwv hauv qab no: cov khoom siv hluav taws xob yog nyob rau hauv ib lub thawv hlau, uas ua rau cov qauv compact thiab me me; cov units tau txais kev sib koom ua ke ntawm lub Hoobkas, txo qis ntawm - qhov chaw ua haujlwm kev teeb tsa thiab ua kom lub voj voog tsim kho tag nrho; thiab lawv muaj kev ntseeg siab ua haujlwm ua ke nrog kev saib xyuas yooj yim.
