Kev tawg fuse: daim ntawv thov, lub hauv paus ntsiab lus ntawm kev ua haujlwm

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

Qee lub sij hawm nyob rau hauv kauj ruam-down transformer installation, ib tug tawg paug tawm ntawm qhov tsawg thiab high voltage windings yuav tshwm sim, nrog rau ib tug tseem ceeb nce nyob rau hauv lub peev xwm sib txawv ntawm qhov tsawg voltage windings. Hauv kev sib txuas nrog cov xwm txheej zoo li no, nws tau dhau los ua qhov tsim nyog siv cov cuab yeej tiv thaiv, xws li tshuab fuses. Tam sim no yuav luag tag nrho cov kauj ruam-down transformer substations siv cov khoom tiv thaiv no.

Blowout fuse

Thaum muaj xwm txheej kub ntxhov hauv transformers nruab nrab ntawm qhov siab thiab qis voltage windings, ib qho kev puas tsuaj tshwm sim thiab qhov nce ntawm qhov hluav taws xob tseem ceeb ntawm cov phaj transformer, uas tuaj yeem cuam tshuam tag nrho cov khoom siv txuas nrog. Qhov tshwm sim no yog hu ua transient voltage, nyob rau hauv uas qhov voltage ntawm sab siab mus rau sab qis, rhuav tshem nws cov rwb thaiv tsev, vim qhov qis sab yuav tsis tsim rau.high voltages. Txhawm rau zam qhov no, lawv siv cov cuab yeej tshwj xeeb - lub tshuab hluav taws xob.

Muaj ntau txoj hauv kev los txuas rau sab qis windings. Thaum txuas cov qis sab windings mus rau lub hnub qub, lub transformer blowout fuse txuas nrog rau nruab nrab thiab tom qab ntawd mus rau hauv av. Thaum txuas cov qis sab windings rau hauv daim duab peb sab, lub fuse txuas nrog ib qho kawg ntawm cov winding thiab tom qab ntawd mus rau hauv av.

Dab tsi yog lub fuse ua los ntawm

Lub breakout fuse muaj ob lub hlau electrodes sib cais los ntawm mica phaj. Qhov ntev ntawm lub phaj sib txawv nyob ntawm lub zog thiab qhov hluav taws xob ntawm qis sab windings ntawm lub transformer. Cov qhov tshwj xeeb yog ua nyob rau hauv daim hlau rau qhov kev tso tawm. Vim li cas thiaj xav tau - peb yuav piav qhia hauv qab no.

Ib qho ntawm cov fuse electrodes txuas nrog rau qhov nruab nrab, lossis rau ib qho ntawm cov theem ntawm lub transformer yog tias tsis muaj nruab nrab. Kev siv cov fuses no yooj yim heev rau kev tswj hwm thiab kev saib xyuas ntawm transformer substations.

Txoj Cai Ua Haujlwm

Thaum muaj qhov sib txuas hluav taws xob tshwm sim hauv cov khoom siv hluav taws xob, qhov hluav taws xob nce rau ntawm qhov qis qis. Nyob rau hauv cov ntaub ntawv no, lub txim tawg tshwm sim, cov paug tawm dhau los ntawm lub qhov nyob rau hauv lub mica phaj nruab nrab ntawm lub electrodes ntawm lub breakdown fuse, yog li hloov ntawm lawv thiab lub zog nce mus rau hauv av. Raws li tau hais los saum no, qhov ntev thiab thickness ntawm mica phaj nws tus kheej, nrog rau cov qhov hauv nws, nyob ntawmntsuas kev khiav hauj lwm voltage ntawm sab siab ntawm lub transformer.

Cov fuses zoo li no tau siv thaum qhov hluav taws xob ntawm sab siab siab tshaj 3000 V, tab sis yog tias qhov hluav taws xob qis dua 3000 V, ces siv qhov muag tsis pom kev yooj yim, lossis fuses los ntawm kev txiav txim tshwj xeeb ntawm cov neeg siv khoom.

Ntse

Tam sim no, tawg fuses nrog qhov ntsuas kev ua haujlwm ntawm 400 txog 690 V yog tsim thiab siv (tej zaum tsis tshua muaj, fuses rau ib txwm ua haujlwm voltage ntawm 230 V yog ua los ntawm kev txiav txim tshwj xeeb), qhov sib txawv voltage txwv txawv. Los ntawm 300 mus rau 1000 V. Tshem tawm qhov sib txawv ntawm cov electrodes txawv ntawm 0.08 txog 0.3 hli, nyob ntawm qhov sib txuas hluav taws xob.

Lub fuse thaum tawg tiv thaiv av tam sim no mus txog 200 A rau 30 feeb. Nyob rau hauv cov ntaub ntawv no, vuam ntawm cov electrodes ua hauj lwm thaum lub sij hawm tawg feem ntau tshwm sim. Thaum lub sij hawm ntsuas hluav taws xob porcelain, qhov hluav taws xob ntawm 2000 V yog siv rau qhov kawg ntawm fuse electrodes rau 1 feeb. Ib txwm rwb thaiv tsev tiv thaiv yuav tsum tsis txhob qis dua 4 ohms. Tom qab dhau qhov kev xeem, qhov qis dua ntawm cov ntaub pua plag yog cim nrog kev ua haujlwm voltage. Tag nrho cov khoom siv tam sim no ntawm lub fuse yog npib tsib xee-plated, thiab cov pob qij txha thiab cov fasteners yog zinc coated.

Thaum lub sijhawm teeb tsa, cov cuab yeej tiv thaiv no yuav tsum tau teeb tsa nruj me ntsis sib luag rau txoj kab ntsug. Thaum sab nraum lub installation ntawm transformers los ntawm saum toj no, lub fuses yog themtshwj xeeb npog los tiv thaiv plua plav thiab ya raws. Fuses yog ib qho kev tiv thaiv ib zaug, uas yog, yog tias muaj kev puas tsuaj tshwm sim los ntawm lub phaj mica, nws yuav tsum tom qab hloov nrog ib qho tshiab, tshwj xeeb tshaj yog thaum lub sij hawm sim ntawm qhov tawg fuses nws tau qhia tias cov electrodes tau welded ua ke..

Daim ntawv thov

Thaum xam cov khoom siv hluav taws xob ntawm ib cheeb tsam ntawm kev siv hluav taws xob, ntau yam kev tiv thaiv tshwj xeeb rau kev teeb tsa hluav taws xob yuav tsum tau qhia txhawm rau zam lawv qhov tsis ua tiav. Raws li tau piav saum toj no, ib qho ntawm cov khoom siv no yog lub tshuab hluav taws xob. Nws yog siv los tiv thaiv tsis tshua muaj hluav taws xob windings nyob rau hauv lub transformer installation nrog ib tug voltage nyob rau sab siab ntawm 3000 V.

Qhov txiaj ntsig tseem ceeb ntawm hom fuse no yog lawv qhov yooj yim ntawm kev tsim khoom, tus nqi qis, thiab kev saib xyuas yooj yim. Qee zaum, raws li cov kev xav tau ntawm cov neeg siv khoom, cov koom haum kev teeb tsa siv cov analogs ntawm blowout fuses.