Chotsukira Mzere wa Vacuum: Mtetezi wa Chitetezo cha Mphamvu

Unali usiku chete pa fakitale yaying'ono yopanga zinthu, ndipo katswiri wokonza zinthu Tom anali atangomaliza kumene ntchito yake pamene alamu yakuthwa inadutsa mumlengalenga. Mzere wopangira zinthu mu workshop yayikulu unasokonekera mwadzidzidzi, nthunzi zinatuluka mu control panel, ndipo fungo la mawaya oyaka linadzaza mumlengalenga—ngati vuto silinayimitsidwe nthawi yomweyo, zida zonse za workshop zikakazingidwa, ndipo moto ukhoza kuyaka.

Popanda kuganiza kalikonse, Tom anatenga zida zake zotetezera ndikupita mwachangu ku chipinda chogawa magetsi cha fakitale. Kumeneko, anapeza chotsukira magetsi chachikhalidwe—chipangizo chotuwa, cholimba chomwe chinali pakhoma, chopanda zowonetsera zapamwamba kapena zowongolera kutali, chotsukira ndi manja chokha ndi magetsi ochepa owunikira. Ndi manja okhazikika, anakoka chotsukiracho pansi mwamphamvu: "gunda" lofooka pamene chotsukiracho chikuyamba kugwira ntchito, ndikudula magetsi ku chingwe cholakwika nthawi yomweyo. Mafunde anazimiririka, alamu inakhala chete, ndipo tsoka linapewedwa. Ngakhale kuti anali atatopa ndi kuthamanga, Tom anadziwa: chotsukira magetsi chosavuta, chosawononga chinali chitangopulumutsa chomeracho ku kuwonongeka kwakukulu.

Nkhani ya Tom si yapadera. Kwa zaka zambiri, chotsukira magetsi chachikhalidwe chakhala ngati ngwazi yosatchuka m'makina amphamvu padziko lonse lapansi. Chingakhale chopanda zinthu zanzeru pakusintha kwamakono, koma kudalirika kwake komanso magwiridwe antchito ake zimapangitsa kuti chikhale choteteza chitetezo cha magetsi—chomwe chimateteza zida, kupewa ngozi, komanso kusunga makina amphamvu akuyenda bwino.

Ndiye, kodi chotsukira ma vacuum circuit (VCB) chachikhalidwe ndi chiyani, ndipo n’chifukwa chiyani chili chofunika kwambiri?

Pakati pake, VCB yachikhalidwe ndi chipangizo choteteza mphamvu chomwe chimapangidwa kuti chisokoneze mphamvu yamagetsi yosazolowereka (monga ma circuits afupi kapena overloads) m'makina amagetsi apakati ndi apamwamba.Ubwino wake waukulu uli mu chipinda chozimitsira magetsi cha vacuum arc, chomwe ndi mtima wa chipangizocho. Pakachitika vuto, kulumikizana kwa choswekacho kumagawikana mkati mwa malo osungira magetsi, zomwe zimazimitsa bwino magetsi a arc (chowopsa chomwe chimachitika chifukwa cha kayendedwe ka magetsi) mu ma millisecond. Kuzimitsa kwa magetsi mwachangu kumeneku kumaletsa moto wamagetsi, kumateteza zida zina zamagetsi, ndikuchotsa chingwe cholakwika kuti makina ena onse azigwira ntchito.

Anthu amapanganso ndikupereka ma vacuum circuit breakers otere, ndipo ma VCB amagwiritsidwa ntchito kwambiri pazochitika zomwe kuphweka ndi kudalirika zimayikidwa patsogolo:

● Mafakitale ang'onoang'ono mpaka apakatikati opanga: Monga omwe ali munkhani ya Tom, komwe amateteza mizere yopangira ku zovuta zamagetsi.

● Malo ogawa magetsi m'deralo: Kuteteza magetsi m'malo okhala anthu ndi amalonda.

● Nyumba zamalonda ndi malo ogwirira ntchito: Kuonetsetsa kuti magetsi akuyenda bwino m'malo omwe magetsi amafunika pang'ono.

● Malo opangira mafakitale omwe ali ndi zosowa zamagetsi: Kumene zinthu zovuta zanzeru sizikufunika, koma kudalirika sikungathe kukambidwanso.

Ngakhale ukadaulo wanzeru ukusinthira makina amphamvu, ma vacuum circuit breaker akadali maziko a chitetezo cha magetsi. Ndi otsika mtengo, osavuta kusamalira, komanso omangidwa kuti akhale olimba—makhalidwe omwe amawapangitsa kukhala abwino kwambiri pa ntchito zambiri padziko lonse lapansi.

Monga momwe Tom anachitira mwachangu ndi VCB usiku umenewo, zipangizozi zimagwira ntchito mwakachetechete kuseri kwa zochitika, zokonzeka kulowererapo ndikuteteza zomwe zili zofunika. Sizingakhale zapamwamba kwambiri, koma udindo wawo monga oteteza chitetezo cha magetsi ndi wosasinthika.