Ukusebenza kwe-Dropout Fuse Cutout

Ukulungiselela ukuphepha:

Uma ekhipha i-fuse yohlobo lwe-drop, umqhubi kumele asebenzise induku yokuvikela enezinga elifanele le-voltage futhi aphumelele ukuhlolwa, agqoke izicathulo zokuvikela, amagilavu ​​​​okuvikela, isivalo sokuvikela kanye nezibuko, noma ame epulatifomu eyomile yokhuni, futhi aqashwe ukuze avikele ukuphepha komuntu siqu.

Amanothi:

Uma umqhubi eqala noma eqeda i-fuse yokudonsa noma yokuvala, ngeke kube khona mthelela. Umthelela uzolimaza i-fuse, njengokudonsa nokuqhekeza i-insulator, ukuphambukisa umlomo wedada, ukudonsa nokuphula indandatho yokusebenza, njll. Abasebenzi akufanele basebenzise amandla amaningi ngesikhathi sokusebenza kwe-fuse yohlobo lokudonsa, ukuze kugwenywe umonakalo ku-fuse, futhi ukuhlukana nokuvala kumele kube khona.

Amandla enqubo yefusi ahamba kancane (qala) - ngokushesha (lapho othintana naye ohambayo eseduze noxhumana naye ongaguquki) - kancane (lapho othintana naye ohambayo eseduze nokuphela kokuvala). Inqubo yokudonsa ifusi ihamba kancane (qala) - ngokushesha (lapho othintana naye ohambayo eseduze noxhumana naye ongaguquki) - kancane (lapho othintana naye ohambayo eseduze nokuphela kokudonsa). Okusheshayo ukuvimbela i-electrical short circuit kanye nokushisa othintana nabo okubangelwa yi-arc, kancane ukuvimbela ukusebenza kwamandla okushaya, okubangela umonakalo womshini kufusi.

Thumela i-oda

Uchungechunge lokusebenza lokumisa ukunikezwa kwamandla kwe-distribution transformer lulandelayo: Ngaphansi kwezimo ezivamile, iswishi ye-low voltage ohlangothini lomthwalo kufanele idonswe kuqala, bese kuthi i-high-voltage drop fuse ohlangothini lwamandla idonswe.

Uma kwenzeka ugesi omningi, ngokwendlela engenhla yokuphela kukagesi, kungavimbela ukudluliselwa kwe-transformer emuva, uma kwenzeka ukwehluleka, ukuvikelwa kungase kwenqabe ukuhamba, kwandise isikhathi sokususwa kwephutha, kwenze ingozi ikhule. Ukusebenza kokudlulisa isinyathelo ngesinyathelo ohlangothini lokunikezwa kukagesi kunganciphisa umthelela wokuqala wamanje (umthwalo), kunciphise ukushintshashintsha kwamandla kagesi, futhi kuqinisekise ukusebenza okuphephile kwemishini. Uma kwenzeka iphutha, kungakhubeka noma kumise ukusebenza ngokushesha, kulula ukukuhlola, ukwahlulela nokubhekana nakho ngokwebanga lamandla. Uma kwenzeka ugesi uhluleka, misa uhlangothi lomthwalo kuqala. Uma kwenzeka ugesi uhluleka isinyathelo ngesinyathelo kusukela ku-voltage ephansi kuya ku-voltage ephezulu, iswishi ingagwema ukusika ukugeleza kwamandla amakhulu futhi inciphise ubukhulu kanye nemvamisa yokusebenza phezu kwamandla kagesi.

Ekusebenzeni, zama ukugwema ukudonsa nokuwisa ama-fuse anomthwalo. Uma kutholakala ukuthi ama-fuse anomthwalo aphazamisekile ngesikhathi sokusebenza, noma ngabe ama-fuse aphazamisekile noma kwenzeka ngisho ne-arc, akuvunyelwe ukuvula ama-fuse futhi. Uma kwenzeka i-fuse yokudonsa engafanele enomthwalo, lapho othintana naye ohambayo eshiya nje othintana naye oqinile, kuzovela i-arc. Ngalesi sikhathi, kufanele ivalwe ngokushesha ukuze kususwe i-arc futhi kugwenywe ukwanda kwengozi. Kodwa-ke, uma wonke ama-fuse edonswe avuliwe, akuvunyelwe ukuvala kabusha ama-fuse adonswe ngephutha. Kuma-transformer okusabalalisa anamandla angu-200 kva noma ngaphansi, ama-fuse ohlangothini lwe-voltage ephezulu avunyelwe ukuhlukanisa nokuhlanganisa ugesi womthwalo.

Ukulandelana kokusebenza

Uchungechunge lokusebenza kwezigaba ezintathu lwefusi yokudonsa ene-voltage ephezulu.

Ukusebenza kokwehluleka kwamandla, kufanele kuqala kudonswe isigaba esiphakathi, bese kudonswa izinhlangothi zombili zesigaba.

Isizathu esiyinhloko sokudonsa isigaba esiphakathi kuqala ukucabangela ukuthi ugesi lapho isigaba esiphakathi sinqunywa ungaphansi kwesigaba esiseceleni (ingxenye yomthwalo wesekethe ithwalwa yizigaba ezimbili), ngakho-ke i-arc incane, futhi akukho ngozi ezinhlangothini ezimbili zesigaba. Lapho i-fuse yohlobo lwe-drop phase yesibili (isigaba esiseceleni) isebenza, ugesi ukhulu, kuyilapho isigaba esiphakathi sidonswe savuleka, kanti ezinye i-fuse ezimbili zohlobo lwe-drop zikude kakhulu komunye nomunye, okungavimbela i-short circuit phakathi kwezigaba ezibangelwa i-arc ende. Uma kunomoya onamandla, kufanele siqale sidonse isigaba esiphakathi, bese sidonsa isigaba se-lee, bese ekugcineni sidonse isigaba esivunguzayo ngokulandelana kokwehluleka kwamandla.

Uma uthumela ugesi, izinhlangothi ezimbili zesigaba sokuqala, ngemva kwesigaba esiphakathi.

Uma amandla edluliswa, isigaba sokuqala somoya, bese sibuyela esigabeni se-phoenix, bese kuthi ekugcineni isigaba esiphakathi, ukuze kuvinjelwe i-short circuit ebangelwa yi-wind arc.

Inothi lokufaka

Izinyathelo zokuphepha zokufaka i-fuse yokudonsa ene-voltage ephezulu

1, ukufakwa kufanele kube ukucindezeleka kokuncibilika (kuncibilike cishe ngokucindezeleka okungu-24.5N), ngaphandle kwalokho kulula ukubangela ukushisa kwezinwele ezithintekile.

2, i-fuse efakwe engalweni yesiphambano (uhlaka) kufanele iqine futhi ithembeke, ayikwazi ukuba nanoma yisiphi isimanga sokuthuthumela noma sokuthuthumela.

3. Ipayipi lokuncibilikisa kufanele libe ne-Angle yokucwilisa engu-25°±2°, ukuze ipayipi lokuncibilikisa liwe ngokushesha ngesisindo salo lapho ukuncibilika kuxutshwe.

4. I-fuse kufanele ifakwe engalweni evundlile (uhlaka) ngebanga eliqondile elingaphansi kwamamitha angu-4 ukusuka phansi. Uma ifakwe ngaphezu kwe-distribution transformer, kufanele igcine ibanga elivundlile elingaphezu kwamamitha angu-0.5 ukusuka emngceleni ongaphandle we-distribution transformer, uma kwenzeka ezinye izingozi ezibangelwa ukuwa kwamapayipi ancibilikisiwe.

5. Ubude bepayipi lokuncibilikisa kufanele bulungiswe ngendlela efanele. Kudingeka ukuthi ulimi lomlomo wedada lukwazi ukugoqa ngaphezu kwezingxenye ezimbili kwezintathu zobude bokuthintana ngemva kokuvala, ukuze kugwenywe isenzo esingalungile sokuwa lodwa ngesikhathi sokusebenza.

6. Ukuncibilika okusetshenzisiwe kumele kube umkhiqizo ojwayelekile womkhiqizi ojwayelekile, futhi kunamandla athile omshini. Ngokuvamile, ukuncibilika kungamelana namandla okudonseka angaphezu kuka-147N okungenani.

7. I-fuse yohlobo lwe-drop engu-10kV ifakiwe ngaphandle, futhi ibanga phakathi kwezigaba likhulu kuno-70cm.