Video: Class 3 Circuit Court yog dab tsi?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Chav kawm 2 thiab 3 circuits txhais tau tias yog ib feem ntawm cov kab hluav taws xob nruab nrab ntawm cov khoom siv hluav taws xob thiab cov khoom siv txuas nrog. Class 3 circuits txwv lub zog tso zis mus rau theem uas feem ntau yuav tsis pib hluav taws. Txawm li cas los xij, lawv tuaj yeem ua tau thiab ua haujlwm ntawm qib siab dua thiab, yog li, tuaj yeem ua rau muaj kev phom sij txaus ntshai.
Ua raws li qhov no hauv kev xav, dab tsi yog Class 2 circuit?
NEC txhais a Chav Kawm 2 circuit raws li qhov feem ntawm cov xaim hluav taws xob nruab nrab ntawm sab load ntawm a Chav kawm 2 lub zog qhov chaw thiab cov khoom siv txuas nrog. Vim nws txwv lub zog, a Chav Kawm 2 circuit raug suav hais tias muaj kev nyab xeeb los ntawm qhov chaw pib hluav taws kub thiab muab kev tiv thaiv los ntawm hluav taws xob poob siab.
Tsis tas li ntawd, dab tsi yog Class 3 transformer? Class 3 transformers yog siv nyob rau hauv nruab nrab voltage tswj Chav kawm 3 circuits xws li tsev ua yeeb yam, suab tshuab, chaw nyob pej xeem, lub tswb nruab nrab thiab kev ruaj ntseg systems. Chav kawm 3 circuits yog tsawg dua Chav kawm 2 circuits.
Ib yam li ib tug yuav nug, Dab tsi yog Class 1 circuit?
A chav 1 circuit yog ib feem ntawm txoj hlua hluav taws xob nruab nrab ntawm sab load ntawm cov khoom siv tiv thaiv overcurrent (OCPD) lossis cov khoom siv hluav taws xob txwv thiab cov khoom sib txuas. Piv txwv li, Chav Kawm 1 hwj chim txwv circuits yog muab los ntawm lub hwj chim mov nrog ib qho kev tso zis uas tsis pub tshaj 30 volts thiab 1,000 volt-amps.
Dab tsi yog qhov txawv ntawm Class 1 thiab Class 2 thaiv?
Class 1 kab yog qhov yuav tsum tau ua kom dhau cov qauv rau lub zog thiab teeb pom kev zoo kab hluav taws xob . Nws yuav tsum zaum hauv cov hlau los yog cov hlau tsis yog hlau los yog hlau-sheathed kab hluav taws xob piv rau jacketed kab xws li hom NM. Chav kawm 3 kab hluav taws xob yog functionally zoo ib yam li Class 2 kab , tab sis nrog ntau dua voltage thiab hwj chim txwv.
Pom zoo:
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Kev tsim tshiab ntawm lub sij hawm ncua relays siv hluav taws xob circuits nrog resistor-capacitor (RC) tes hauj lwm los tsim lub sij hawm ncua, ces energize ib txwm (instantaneous) electromechanical relay coil nrog cov hluav taws xob Circuit Court cov zis
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Ib chav kawm 1 Circuit Court yog ib feem ntawm cov xaim hluav taws xob nruab nrab ntawm cov khoom siv hluav taws xob tiv thaiv overcurrent (OCPD) lossis cov khoom siv hluav taws xob txwv thiab cov khoom sib txuas. Piv txwv li, Chav Kawm 1 lub hwj chim txwv tsis pub siv hluav taws xob yog muab los ntawm lub zog hluav taws xob nrog cov zis uas tsis pub tshaj 30 volts thiab 1,000 volt-amps