ICanwin iyiNkampani Yokuguqula Amandla Kagesi & Umkhiqizi Wesiguquli Kagesi
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ICanwin iyiNkampani Yokuguqula Amandla Kagesi & Umkhiqizi Wesiguquli Kagesi
Kumjikelezo we-AC, kukhona imiqondo emithathu yamandla kagesi: amandla asebenzayo, amandla asebenzayo namandla abonakalayo. I-KVA imele amandla abonakalayo, afaka amandla asebenzayo namandla asebenzayo. I-KW imele amandla asebenzayo, futhi i-kVar imele amandla asebenzayo. Ubudlelwano phakathi kwe-kW ne-kVar kanye nokuguqulwa kunomqondo - isici samandla esithi cos ф, amandla asebenzayo kW=UIcos ф, amandla asebenzayo kVar=UIsin ф, namandla abonakalayo kVA=UI(U ingu-voltage, mina ingamanje).
Uma ufaka isicelo ku-bureau yokuhlinzeka ngogesi, kufanele ugcwalise amandla asebenzayo okudingeka uwasebenzise, okungukuthi, mangaki ama-kW adingekayo. Uma ukusetshenziswa kwamandla okuphelele kwesakhiwo kubalwa ku-4500kW, ngenani elikhulu kangaka, ibhodi lamandla lizodinga isinxephezelo samandla asebenzayo. Cabanga ukuthi isici sakho samandla esinxeshezelwe singaphezu kuka-0.9. Amandla abonakalayo azodinga u-4500÷0.9=5000kVA, bese ucabangela imajini ethile yomthwalo kanye nezicaciso ze-transformer, ngesaba ubuncane be-transformer engu-5600kVA. Kunjalo, lokhu kubala nje, ekusebenziseni kwangempela, kusafanele ubone umthwalo wakho ngesikhathi esifanayo nezinye izici okufanele zicatshangelwe.
Mayelana nokukhethwa kwamandla e-transformer, kunemithetho elandelayo yokubhekisela!
Ngokunikezwa umthamo we-transformer, thola uhlangothi lwayo lwebanga le-voltage olukalwe lwamanje
Incazelo: Ifanele noma yiliphi izinga le-voltage.
Ifomula: umthamo ohlukaniswe nge-voltage, uphindaphindeka ngayisithupha ahlukaniswe ngeshumi.
Ucwaningo lwesigameko:
Ukubonakala kwamanje I= amandla abonakalayo S/1.732 * 10KV=1000KVA/1.732 * 10KV=57.736A
Isilinganiso I=1000KVA/10KV * 6/10=60A
Umthamo we-transformer owaziwayo, ukubala okusheshayo kokuvikela okuyisisekelo nokwesibili kuhlanganisa inani lamanje
I-Transformer high voltage fuse, ukuqhathanisa umthamo wamandla.
Ngefuse ye-voltage ephansi eguquguqukayo, umthamo uphindaphindeka ngo-9 ihlukaniswe ngo-5
Linganisa i-current yesibili ye-transformer yamandla futhi ubale umthamo wayo womthwalo
I-voltage yesibili yokusabalalisa eyaziwayo, ikalwa ama-kilowatts wamanje.
Voltage class 400 volts, one ampere 0.6 kilowatts.
Isilinganiso samandla kagesi 3,000 volts, 1 amp 4.5 kilowatts.
Voltage class 6,000 volts, eyodwa amp integer nine kilowatts.
Voltage class 10 kv, 1 amp 15 kW.
I-Voltage level 35,000, 1 amp 55 kilowatts.
4. Uma unikezwe umthamo we-transformer, thola isilinganiso samanje sohlangothi lwebanga le-voltage yayo
I-voltage coefficient evamile, i-capacitive multiplication coefficient yamanje,
Ilinganiselwe ku-400 volts, i-coefficient 1.44,
I-voltage elinganiselwe i-6000 volts, i-coefficient zero 096,
Ilinganiselwe ku-10,000 volts, i-coefficient ingu-0.6 nje.
Qaphela: umthamo wamanje olinganiselwe we-voltage grade side ingatholakala ngokuphindaphinda umthamo we-transformer ngokuqondile nge-coefficient ehambisanayo.
Khetha inani lamanje elincibilikayo lamafuse ayisisekelo nawesibili ngokuya ngomthamo olinganiselwe kanye ne-voltage ye-transformer
Ukugeleza kokuncibilika kuzo zombili izinhlangothi zokusabalalisa kubalwa kalula ngokomthamo,
Iyunithi yomthamo yi-kilovolt ampere kanti iyunithi ye-voltage yi-kilovolt.
Amandla kagesi aphezulu ahlukaniswe nge-voltage, i-voltage ephansi iphindwe ngo-1.8,
Iyunithi ye-ampere yamanje iyatholakala, bese ikhishwa noma yengezwe ngokwezinga.
Ucwaningo lwesigameko:
Umthamo olinganiselwe we-transformer yamandla wezigaba ezintathu yi-315KVA, i-voltage elinganiselwe yokuphela okuphezulu yi-6KV, kanti i-voltage elinganiselwe yokuphela okuphansi yi-400V;
Isilinganiso samanje sokuncibilika ohlangothini lwengcindezi ephezulu ngu-(315÷6) A= 52.5a; Isilinganiso samanje sokuncibilika ohlangothini lwe-voltage ephansi ngu-(315×1.8) A=567A
Qaphela: ukukhetha kokucaciswa kwe-fuse kuzonqunywa umehluko phakathi kwevelu ebaliwe negeji yamanje yokuncibilika.
Khetha inani lamanje elincibilikayo lamafuse ayisisekelo nawesibili ngokuya ngesilinganiso samanje se-transformer
Ngokugeleza kokuncibilika kuzo zombili izinhlangothi ze-transformer, bala isilinganiso samanje izikhathi ezimbalwa,
Inani lohlangothi lokucindezela okukhulu likhulu, futhi inombolo iyahlukahluka ngomthamo ohlukile.
Amandla afinyelela ku-100, kabili kuya kathathu inani lamanje,
Uma ingaphezu kwekhulu, iyancipha ngokubili ukuya kweyodwa nengxenye,
I-voltage ephezulu encane icacisiwe futhi ayikwazi ukuba ngaphansi kwama-amps amathathu.
Ingcindezi ephansi ilingana nenani elilinganiselwe kungakhathaliseki inani levolumu.
7 Izidingo zokufakwa kwama-transformer okusabalalisa amandla
Okungenani amamitha amabili nesigamu ukusuka phansi, kunezithiyo ezifakwe phansi,
Isithiyo okungenani singamamitha angu-1.8 ukuphakama, sishiya iphuzu lesishiyagalombili lomdlalo,
Uma umnotho uvuma, kufaneleka kakhulu ukusebenzisa uhlobo lwebhokisi.
Akufanele ibekwe obala ngaphandle uma isetshenziswe okwesikhashana.
Ukufakwa endlini kufanele kufakwe umoya, futhi imigudu ezungezile kufanele ifanele.
8 Ikhwalithi ye-voltage yokuhlinzeka ngama-transformer okusabalalisa
Kuphela uma i-voltage yokunikezela iqinisekisiwe, lapho okokusebenza kungasebenza ngokujwayelekile
Ukuchezuka okuphezulu nokuphansi kucacisiwe. I-voltage ihlukile.
I-voltage phakathi kwemigqa ihlanganisa noma susa isikhombisa, khipha ishumi kanye nesikhombisa kuyisigaba,
Uma izidingo zikhethekile kakhulu, amaqembu anikezelayo kanye nesidingo azoxoxa ngawo.
Isixazululo:
Ohlelweni lwaseShayina olusebenzisa amandla kagesi aphansi, i-voltage kalayini ingu-380V, kanti ukuchezuka okuvumelekile ngu-± 7%, okungukuthi 353.4 ~ 406.6V; I-voltage yesigaba ingu-220V, futhi ukuchezuka okuvumelekile -10% ~ + 7%, okungukuthi 198 ~ 235.4V.
Ukutholwa kwama-winding e-transformer insulation
Qinisekisa ukusebenza okuphephile koguquko futhi uhlole izingozi ezifihliwe ngokulinganisa ukwahlukanisa.
Sebenzisa imitha ye-megohm ukukala, khetha imitha ngokuya nge-voltage.
Ngaphezu kwezintathu, ezinhlanu, ezimbili, ezinhlanu, nenkulungwane ngaphansi kweshumi.
Ukuphela kuka-E kwethuluzi kufanele kuxhunywe phansi, futhi ekugcineni kuka-G kufanele kwengezwe ngokungcoliswa okukhulu.
Ukusonteka okungakaliwe kanye nezingxenye, isisekelo esithembekile sokuqinisekisa ukuphepha.
Isivinini sokujikeleza kwesandla esingu-120, ngemva kokukhishwa kokuhlolwa bese ususa ucingo.
Qaphela: ku-35KV nangaphezulu ama-transformers kufanele asebenzise i-2500V megohmmeter; Kuma-transformer afika futhi afaka i-10KV, kufanele kusetshenziswe i-megohmmeter engu-1000V, u-L uxhunywe ekujikeni kwe-transformer, u-E usekelwe ekugcineni.
Ukusebenza okufanayo kwama-transformer amabili
Ama-transformer amabili ahambisanayo, izimo ezine okufanele uzilungiselele;
Amaqembu ezintambo kufanele afane, kufanele kube nesilinganiso esifanayo se-transformer;
I-impedance voltage kufanele ihambisane, ixhunywe komunye nomunye ngokulandelana kwesigaba;
Umehluko wamandla akufanele ube mkhulu, kungcono ungeqi ezintathu kuya kweyodwa.
11 I-fuse ye-transformer yokusabalalisa iphukile
Uma i-fuse yokucindezela okukhulu iphukile, izizathu eziyisithupha zokwahlulela.
Ukucaciswa kwe-fuse kuncane; Umonakalo wezinga eliphansi okunzima ukuwuthwala;
High voltage lead short circuit; Ukuhlukaniswa kwe-insulation yangaphakathi;
Ukulimala komthelela wombani; Ukuphuka kwekesi noma ukuphuka.
Uma i-fuse yengcindezi ephansi iphukile, izizathu ezinhlanu zokwahlulela.
Ukucaciswa kwe-fuse kuncane; Umonakalo wezinga eliphansi okunzima ukuwuthwala;
Umthwalo owedlulele isikhathi eside; Ukuhlukaniswa kwe-winding insulation;
Ukuhluleka kolayini wokudlulisa, omfushane noma oshintshanayo nomhlabathi.
Kala i-no-load current ye-380V single-phase welding transformer ngaphandle kwe-nameplate futhi ubale umthamo wayo olinganiselwe
Ifomula: umthamo wokushisela ongu-380, awukho umthwalo ophindwe kahlanu.
Isixazululo:
I-Single-phase AC welding transformer empeleni iyinhloso ekhethekile yesiguquli esehlayo. Uma kuqhathaniswa ne-transformer evamile, umgomo wayo oyisisekelo wokusebenza ucishe ufane. Ukuze kuhlangatshezwane nezidingo zenqubo yokushisela, i-welding transformer isebenza ngaphansi kwesimo sesifunda esifushane, futhi kuyadingeka ukuba ne-arc ethile yokuqala i-voltage ngesikhathi sokushisela.
Lapho i-welding current ikhula, i-voltage ephumayo iyancipha kakhulu. Ngokusho kwe-P=UI (amandla avamile, i-voltage ilingana ngokuphambene neyamanje). Lapho i-voltage iwela ku-zero (okungukuthi, isifunda esifushane sohlangothi lwesibili), uhlangothi lwesibili lwamanje alukhulu kakhulu nokunye, okungukuthi, i-welding transformer inezici zangaphandle zokuwa komqansa, izici zangaphandle ze-welding transformer. itholakala ngokuwa kwe-voltage okukhiqizwa ikhoyili yokusabela.
Akukho mthwalo, ngenxa yokuthi ayikho i-welding current, ikhoyili yokusabela ayikhiqizi ukwehla kwe-voltage, ngalesi sikhathi i-voltage engekho ilingana ne-voltage yesibili, okungukuthi, i-welding transformer akukho-load kanye ne-transformer evamile ayikho- layisha okufanayo. I-no-load current ye-transformer ngokuvamile ingaba ngu-6% ~8% wesilinganiso samanje (isifunda sibeka ukuthi i-no-load current akumele ibe ngaphezu kuka-10% wamanje olinganiselwe)
13 Yazi umthamo wemoto enezigaba ezintathu, thola amandla ayo alinganisiwe
Ifomula: umthamo ohlukaniswe ngenani lama-kilovolts, izikhathi zephoyinti le-coefficient 76.
Ucwaningo lwesigameko:
Isigaba sesithathu se-222 motor eyaziwayo, i-kilowatt 3.5 amperes.
1 kw samanje 0.22 KV * 0.76 impahla 1a
Sinemoto enamandla kagesi engu-3,000 volt, ama-kilowatts amane i-ampere ngayinye.
4 kw samanje 3 kv * 0.76 impahla 1a
Qaphela: ifomula iyasebenza ekubalweni kwamandla amanje alinganiselwe amamotho ezigaba ezintathu zanoma yiliphi ibanga likagesi. Uma kusetshenziswa ifomula, iyunithi yamandla ingu-kW, iyunithi yamandla kagesi i-kV kanti iyunithi yamanje ingu-A.
