KUSUNUNGURWA KWEFUSE YEVHITEJI YEMAHARA

Mafuyusi ane simba guruanowanzo shandiswa mumagrid emagetsi madiki ane voltage iri pasi pe35kV. Kana paine overload kana short circuit musystem, kunyunguduka kunoputika nekuda kwekupisa zvakanyanya, nokudaro zvichicheka tambo uye kudzivirira grid yemagetsi nemidziyo yemagetsi. Musimboti wayo wekushanda wakafanana newemafusi ane voltage shoma. Mafusi akafanana.
Mafusi ane simba guru akakamurwa kuita mhando mbiri: kuganhurira magetsi (current-limiting) uye kudonhedza magetsi (drop-out). Zvinoreva kuganhurira magetsi (current limitation) ndekuganhurira magetsi enguva pfupi (short-circuit current) kuti asvike pahuwandu hwepamusoro, nokudaro achityora mutsetse pane imwe kukosha isati yasvika pahuwandu hwemagetsi enguva pfupi (short-circuit current), uye kuderedza kukuvadzwa kwemagetsi enguva pfupi (short-circuit current) kumutsetse nemidziyo yemagetsi.

1. Kutanga kwefuyuzi inodonha
Pillar inodziisa simba inoita basa rekuisirwa, kugadziriswa uye kuputirwa kwesimbi, uye zvinhu zvacho zvakagadzirwa neceramic. Chubhu inonyungudutsa inoita basa rekuputirwa kwesimbi uye kudzima arc. Chigadziko chekunze chakagadzirwa nechubhu yepepa yephenolic kana chubhu yegirazi ye epoxy, uye chikamu chemukati chakagadzirwa nezvinhu zvinogadzira gasi zvakaita sechubhu yepepa yesimbi kana chubhu yepepa yeshellac. Migumo yese yechubhu inonyungudutsa pamusoro nepazasi. Kunyunguduka kunopfuura nemuchubhu inonyungudutsa, mugumo mumwe wakasungirirwa pachikamu chezasi, mumwe mugumo wakasungirirwa papureti yekumanikidza inogona kutenderera yakatenderedza axis, uye pureti yekumanikidza inodzvanywa papepa resimbi respring kuti igadzire chinobata chepamusoro. Pureti yekusanganisa inosungirirwa pakati pesimbi inotsigira nepureti yekumanikidza. Pakuisa, ita kuti chubhu yefuse nemutsetse wakatwasuka zvive angle ye30°. Mushure mekunge kunyunguduka kwasanganiswa, pureti yekumanikidza inotenderera newachi yakatenderedza shaft pasi pechiito chechitubu, chinobata chepamusoro chinotsvedza kubva parurimi rwepureti yekufukidza duckbill, uye chubhu yefuse inotenderera newachi yakatenderedza shaft 3 negravity yayo, inorembera yakatarisa pasi papureti yekumanikidza, uye inonzi inodonha. Mushure mekunge kunyunguduka kwaputika uye arc yagadzirwa,
Kupisa kwearc kunoita kuti zvinhu zviri pamadziro emukati mechubhu inonyunguduka zviburitse gasi, kumanikidzwa kuri muchubhu kunokwira, gasi rinoburitswa kunze nekukurumidza, uye arc inofuridzwa kwenguva refu, uye arc inodzimwa kana magetsi ayambuka zero.
Kana chubhu yefuse yadonha, bvisa chubhu yefuse netsvimbo yekudzivirira kupisa woitsiva nechinhu chitsva chakanyunguduka. Kana dambudziko rabviswa, dzvanya chubhu yefuse kusvika panzvimbo yekuvhara.
Fuse yacho iri nyore uye haina mutengo wakaderera. Dambudziko nderekuti simba rinopwanyika diki, uye kana mvura yanyunguduka, murazvo nesimbi zvinopfapfaidzwa kubva pachubhu yefuse kusvika kumativi ese.

2. Nhanganyaya yefuse inoganhurira magetsi
Waya yemhangura yakaputirwa nesirivha inoshandiswa sefuse uye inoputirwa pamwe chete pa ceramic core kuti iite kunyunguduka kwese. Fuse yacho inosungirirwa nema tin balls, izvo zvinoshandisa metallurgical effect, iyo inogona kugadzirisa dambudziko rekuti tembiricha yekubatana inokwira zvakanyanya kana overload current yakaderera, uye tin. Bhora harina simba rakawanda pakutyora short circuit, nekuti nguva short circuit ipfupi kwazvo. Fuse yakagadzirwa nezvinhu zve ceramic uye yakazadzwa ne quartz jecha se filler. Migumo yese ye fuse tube i copper caps se contacts.
Kana kunyunguduka kuri pasi pesimba remagetsi emagetsi, kunotanga kwabatana, uye gap diki rinopwanyika kuti rigadzire arc, uye gap racho rinokura zvishoma nezvishoma uye maitiro ekupwanyika anoitika, kusvika voltage yekudzoreredza isingachakonzere kuti gap racho ripwanyike uye mutsetse wacho wagurwa. Nekuda kwesimba guru rekupatsanura jecha re quartz, magetsi emagetsi emagetsi anogurwa kana kuganhurirwa asati asvika pakakwirira, saka anonzi fuse inoganhurira magetsi.
Kanafuse inoganhurira iripoKana tambo yachekwa, arc inodzimwa muchubhu yefuse yakavharwa, uye inoshandiswa zvakanyanya mumidziyo yemagetsi inogovera magetsi mukati meimba. Nekuda kwemhedzisiro yezvino, zvinodiwa zvekugadzikana kwesimba uye kupisa kwemidziyo yemagetsi mudunhu zvinoderedzwa.