Incazelo yamapharamitha ahlukahlukene egobolondweni le-molded case circuit breaker (MCCB)

Ama-circuit breaker e-Molded Case (I-MCCB) ziyizingxenye ezibalulekile kumanethiwekhi okusabalalisa ugesi, okunikeza isivikelo kumasekethe amafushane kanye nokulayisha ngokweqile. Ukuqonda amapharamitha ahlukahlukene ngaphakathi kwe-MCCB enclosure kubalulekile ukuqinisekisa ukusebenza kahle nokuphepha kohlelo lukagesi.

I-voltage elinganisiwe i-Ue yi-voltage yesistimu, ephakeme ngo-5% kune-voltage evamile kumthwalo kagesi. I-plastic case circuit breaker yakhelwe ukusebenza nge-voltage elinganisiwe yokumelana ne-impulse Uimp=12KV kanye ne-voltage elinganisiwe yokuvimbela i-Ui 400V. Kufanele kuqashelwe ukuthi i-voltage yenethiwekhi yokusabalalisa akufanele idlule i-voltage elinganisiwe yokuvimbela i-Ui ukuvimbela noma iyiphi ingozi engaba khona.

Isilinganiso samanje se-125 Amp simelela umthamo omkhulu wokuthwala wamanje we-MCCB. Ngaphezu kwalokho, ipharamitha yamanje yokusebenza esheshayo II yokukhululwa kwamagnetic ingu-10In, lapho i-In iphindwe kayishumi kunomthamo olinganiselwe (1250A), okuqinisekisa isenzo esisheshayo nesisebenzayo ngaphansi kwezimo zesekethe esifushane.

Ngakwesokudla kwegobolondo le-molded case circuit breaker, i-rated limit short-circuit segmenting capacity Icu=35KA kanye ne-rated operating short-circuit breaking capacity Ics=22KA zibonisa ikhono le-molded case circuit breaker lokusingatha izimo ze-short-circuit ngaphandle kokuthinta ukuphepha. I-MCCB yakhelwe ukuba nebanga lokushisa lendawo yokusebenza eliqala ku--5°C kuya ku-40°C kanye nemvamisa engu-50/60 Hz, okwenza ifaneleke ezimweni ezahlukene zemvelo.

Ngaphezu kwalokho, i-MCCB ihambisana nezindinganiso zokukhiqiza i-IEC/EN60947-2, iqinisekisa ukuhambisana nemithethonqubo yekhwalithi nokuphepha. Lokhu kuhlanganiswa kugcizelela ukuthembeka nokusebenza kwe-MCCB, okunikeza abasebenzisi ukuthula kwengqondo mayelana nokusebenza kwayo kahle kanye nokuqina kwesikhathi eside.

Ngamafuphi, ukuqonda amapharamitha ngaphakathi kwe-MCCB enclosure kubalulekile ekukhetheni idivayisi yokuvikela isekethe efanele yesistimu kagesi. Ngomklamo wayo oqinile kanye nokuhambisana nezindinganiso zokukhiqiza, i-MCCB iqinisekisa ukusebenza okuphephile nokuthembekile ezinhlotsheni ezahlukene zokusebenza.