Dab tsi yog Qhov Kev Tiv Thaiv Kev Tiv Thaiv Ntawm Ib Lub Thawv Xa Khoom?
Apr 16, 2026
Tso lus
1. Kev tiv thaiv av (PE Wire Connection)
Txhua yam uas tsis yog- lub zog hlau qhov chaw ntawm lub thawv xa khoom, xws li cov hlau casing, qhov rooj vaj huam sib luag, mounting brackets, thiab hlau conduits, yuav tsum muaj kev ntseeg siab txuas nrog lub hauv paus ntsiab lus thaiv siv PE xaim (daj -ntsuab ob- xim xaim), thiab tom qab ntawd coj mus rau lub ntsiab hauv av electrode.
Muaj nuj nqi: Tiv thaiv cov hlau casing ntawm lub thawv xa khoom los ntawm kev ua kom muaj zog vim kev rwb thaiv tsev tsis ua haujlwm, yog li tiv thaiv kev sib tsoo hluav taws xob. Thaum lub casing ua energized, ib tug luv luv Circuit Court yog tsim nyob rau hauv lub grounding voj, prompting lub Circuit Court breaker los yog fuse kom sai disconnect lub hwj chim mov.
2. Qhov System Grounding
Transformer nruab nrab point yog ncaj qha hauv av, muab xoom- muaj peev xwm siv rau qhov system. Hauv lub thawv loj, cov xaim nruab nrab txuas nrog PE xaim thiab hauv av; hauv sub- lub thawv faib khoom, ob qho yuav tsum tau sib cais.
Muaj nuj nqi: Ua kom ruaj khov kev ua haujlwm thiab tsim lub voj voog tam sim no nyob rau hauv qhov xwm txheej ntawm ib qho - theem hauv av txhaum.
3. Rov ua dua
Nyob rau hauv TN system, ntxiv rau hauv av ntawm lub transformer ntawm qhov kawg ntawm lub hwj chim mov, ib tug thib ob grounding yog ua nyob rau hauv ib tug tseem ceeb point ntawm PE los yog PEN kab.
Lub Hom Phiaj: Qhov no txo cov PE kab lub peev xwm rau hauv av, txo qhov kev pheej hmoo ntawm hluav taws xob poob thaum lub sij hawm nruab nrab lossis hauv av txhaum thiab txhim kho qhov kev xav ntawm cov khoom siv tiv thaiv.
4. Equipotential Bonding
Nruab ib qho kev sib txuas ntawm qhov sib txuas ntawm qhov chaw nyob ze ntawm lub thawv xa khoom kom txuas tag nrho cov khoom, suav nrog PE busbar, hlau kav, thiab cov hlau txuas ntxiv. Qhov no yog qhov tshwj xeeb tshaj yog nyob rau hauv qhov chaw ntub dej xws li chav dej thiab pas dej da dej.
Muaj nuj nqi: Tshem tawm qhov sib txawv ntawm cov hlau sib txawv nyob ib ncig ntawm lub thawv xa khoom, tiv thaiv kev sib tsoo hluav taws xob los ntawm xob laim los yog qhov kev taw qhia tsis raug.
5. Kev tiv thaiv xob laim hauv av
Qhov chaw nres nkoj hauv av ntawm qhov kev tiv thaiv hluav taws xob tau nruab rau hauv lub thawv xa khoom yuav tsum txuas nrog PE busbar lossis ib qho khoom siv hluav taws xob tiv thaiv hluav taws xob uas siv cov hlau luv thiab tuab tshaj plaws. Kev tiv thaiv hauv av feem ntau yuav tsum tsawg dua lossis sib npaug rau 4Ω (tsawg dua lossis sib npaug rau 10Ω rau kev tiv thaiv hluav taws xob ywj pheej).
Muaj nuj nqi: Tshem tawm cov hluav taws xob loj tam sim no los ntawm xob laim mus rau hauv av los ntawm cov khoom siv hauv qab thiab cov khoom siv hauv av los tiv thaiv lub thawv xa khoom thiab nws cov khoom siv sab hauv los ntawm kev puas tsuaj los ntawm xob laim.
6. Kev tiv thaiv hauv av (Residual Current Circuit Breaker)
Txhim kho qhov seem tam sim no ua hluav taws xob hluav taws xob (RCCB). Thaum cov xau tam sim no mus txog qhov pib (xws li 30mA), nws txiav tawm lub hwj chim, ua ib qho tseem ceeb ntxiv rau hauv av.
Muaj nuj nqi: Nws tuaj yeem txiav tawm lub zog hluav taws xob thaum muaj teeb meem hauv av. Nws tsis yog ib txoj hauv kev hauv av, tab sis yog kev tiv thaiv kev tiv thaiv uas ua haujlwm nrog rau hauv av.