Zimele ntoni iiparameters kwi-MCB?

Iziphuli zesekethe ezincinci (I-MCB) zisetyenziswa kakhulu ukukhusela iisekethe kwiisekethe ezimfutshane kunye nokugqithisa, kwaye zingasetyenziswa nakwiinkqubo zokusasaza umbane kwizibane okanye kwiimoto.
Ibonakala ngembonakalo entle nencinci, ubunzima obuphantsi, ukusebenza okugqwesileyo nokuthembekileyo, amandla aphezulu okuqhekeza, ukukhubeka ngokukhawuleza, ukufakwa lula kweereyile zesikhokelo kunye nobomi benkonzo ende.
Kukho iimpawu ezininzi kwi-miniature circuit breaker (MCB). Zithetha ukuthini?

1. Lithetha ukuthini igama elithi “C20”?
I-20 ngumbane olinganisiweyo, ngoko ke ithetha ukuthini i-C? I-C imele iimpawu zokukhubeka ngoko nangoko ze-circuit breaker, ezahlulwe zibe ziintlobo ze-B, C kunye ne-D;
Uhlobo B (3-5) I-In ikhubeka ngokuphindwe kathathu ukuya kahlanu kunombane olinganisiweyo. Ifanelekile kwimithwalo ekhuselayo kuphela kunye neesekethe zokukhanyisa ezibuthathaka kakhulu. Olu hlobo lomthwalo lunombane omncinci wokuqala kwaye lusetyenziswa ngokubanzi kwizibane zasekhaya okanye kwiindawo ezineemfuno zokhuseleko eziphezulu.
Uhlobo C (5-10) I-In ikhubeka ngokuphindwe ka-5 ukuya kwi-10 kunombane olinganisiweyo. Ifanelekile kwimithwalo yokungenisa kunye neesekethe zokukhanyisa ezinobuthathaka obuphezulu, ezifana nezibane ze-tungsten halogen. Iimpawu zayo zokuqala zinexabiso eliphezulu lombane kwaye zihlala zisetyenziswa ekukhuseleni iisekethe zokusasaza. kunye nemithwalo yokukhanyisa ene-current ephezulu yokuqalisa.
Uhlobo D (10-14) I-In ikhubeka ngokuphindwe kalishumi ukuya kwi-14 kunombane olinganisiweyo. Ifanelekile kwiinkqubo zokusasazwa kwamandla ezinemithwalo ephezulu yokungenisa kunye nemisinga emikhulu yokuchaphazela, njengeemoto, iivalvu ze-solenoid kunye neminye imithwalo. Imithwalo enjalo inemithwalo ephezulu yokuchaphazela.

I-2.240V/400V 50Hz/60Hz ibhekisa kwiisekethe ezifanelekileyo;
3.IEC60898 ibhekisa kumgangatho we-electrotechnical wehlabathi i-IEC60898.
4. Ithetha ukuthini i-4500A esezantsi? Ingaba ngumbane?
Ngokwenene yi-current, ebhekisa kwi-maximum breaking current. Oko kukuthi, xa kwenzeka i-short circuit kumgca, ukuba i-current inkulu kune-3000A, isenokungaqhawuki. Le parameter yahlukile kubavelisi abahlukeneyo.

5. Ithetha ukuthini le mpawu?
Olu phawu lubonisa ukuba i-circuit breaker inemisebenzi emibini yokukhubeka (yokukhusela) yokugqithisa kakhulu kunye ne-short circuit.