Iziqephu zesekethe ezibunjiwe zingamathuluzi okuvikela kagesi aklanyelwe ukuvikela isekethe kagesi kusukela kumanje ngokweqile.Lokhu kwamanje okweqile kungadalwa ngenxa yokugcwala ngokweqile noma isifunda esifushane.Izinqamuli zesekethe ezibunjiwe zingasetshenziswa ezinhlobonhlobo zama-voltage namafrikhwensi anomkhawulo ochaziwe ophansi nangaphezulu wezilungiselelo zohambo ezilungisekayo.Ngokungeziwe ezindleleni zokukhubeka, ama-MCCB angasetshenziswa njengamaswishi okunqanyulwa mathupha esimweni esiphuthumayo noma sokulungisa.Ama-MCCB amisiwe futhi ahlolelwe i-overcurrent, ukukhuphuka kwamandla kagesi, nokuvikelwa kwamaphutha ukuze kuqinisekiswe ukusebenza okuphephile kuzo zonke izindawo nezinhlelo zokusebenza.Asebenza ngokuphumelelayo njengeswishi yokusetha kabusha isekethe kagesi ukuze anqamule amandla futhi anciphise umonakalo odalwe ukugcwala kwesekhethi, iphutha eliphansi, amasekhethi amafushane, noma lapho i-current idlula umkhawulo wamanje.
CJ:Ikhodi yebhizinisi
M: Isekhethi yekesi elibunjiwe
1:Nombolo yokuklama
□:Isilinganiso samanje sozimele
□:Ikhodi yesici somthamo wokwephulwa/S isho uhlobo olujwayelekile (S ingashiywa)H isho uhlobo oluphakeme
Qaphela: Kunezinhlobo ezine zesigxobo esimaphakathi (i-N pole) yomkhiqizo wezigaba ezine. Ipali emaphakathi yohlobo A ayifakelwe isici sokukhubeka samanje, ihlale ivuliwe, futhi ayivuswa noma ayicishwa kanye nezinye. izigxobo ezintathu.
Ipali engathathi hlangothi yohlobo B ayifakelwe into yokukhubeka yamanje, futhi iyavulwa noma icishwe kanye nezinye izigxobo ezintathu (i-pali ephakathi nendawo iyavulwa ngaphambi kokuba icishwe)Isigxobo esimaphakathi sohlobo C sifakwe ngaphezulu- into yamanje ekhubekayo, futhi iyavulwa noma icime kanye nezinye izigxobo ezintathu (i-pole engathathi hlangothi iyavulwa ngaphambi kokuba icishwe) Ipali engathathi hlangothi yohlobo D ifakwe isici sokukhubeka samanje, ihlale ivuliwe futhi ayishintshiwe. phezu noma vala kanye nezinye izigxobo ezintathu.
Igama lensiza | Ukukhishwa kwe-elekthronikhi | Ukukhululwa okuyinhlanganisela | ||||||
Oxhumana naye osizayo, ngaphansi kokukhishwa kwe-voltage, othintana naye nge-alam | 287 | 378 | ||||||
Amasethi amabili okuxhumana asizayo, othintana ne-alamu | 268 | 368 | ||||||
Ukukhishwa kwe-Shunt, ukuthintana ne-alamu, othintana naye osizayo | 238 | 348 | ||||||
Ngaphansi kokukhululwa kwe-voltage, ukuxhumana ne-alamu | 248 | 338 | ||||||
Oxhumana naye we-alamu yokuxhumana | 228 | 328 | ||||||
Vala othintana naye wokukhipha i-alamu | 218 | 318 | ||||||
Ukukhishwa kwe-axiliary under-voltage | 270 | 370 | ||||||
Amasethi amabili okuxhumana asizayo | 260 | 360 | ||||||
Shunt ukukhishwa kwe-under-voltage | 250 | 350 | ||||||
Shunt ukukhipha oxhumana naye osizayo | 240 | 340 | ||||||
Ukukhishwa kwe-voltage engaphansi | 230 | 330 | ||||||
Oxhumana naye osizayo | 220 | 320 | ||||||
Shunt ukukhululwa | 210 | 310 | ||||||
Oxhumana naye nge-alamu | 208 | 308 | ||||||
Ayikho insiza | 200 | 300 |