Kuv .}}}} Xaiv cov hloov pauv nruab nrab hauv av: Kev Nyab Xeeb thiab Kev Tshawb Xyuas Kev Nyab Xeeb
Kev xaiv ntawm txoj kev hauv av yuav tsum muaj kev tshuaj xyuas kev siv hluav taws xob ntxiv, thiab kev tiv thaiv kom muaj kev phom sij
TN-S kaw lus TN (Kev Tiv Thaiv Txiaj Ntsig)
Cov Nta Quav: Tus hloov pauv nruab nrab yog ncaj qha . Cov khoom siv hauv ntiaj teb no tau txuas nrog tus neeg saib xyuas PE .
Kev Ruaj Ntseg Kev Ruaj Ntseg: Hauv kev sib txig sib luag, tsim lub peev xwm hauv lub zog sib xyaw, ua kom muaj peev xwm ua haujlwm luv luv (ID)
Cov Ntawv Thov Raug: Cov Vaj Tse (Thaj Chaw, Chaw Haujlwm, Tsev Kho Mob, thiab lwm yam chaw uas xav tau cov qauv hluav taws xob rau niaj hnub no}
Nws system (rho tawm cov ntsej muag)
Kev Ruaj Ntseg Kev Ruaj Ntseg: thaum thawj zaug ua txhaum hauv ntiaj teb, qhov kev txhaum tam sim no txwv tsis pub rau lub kaw lus xa tawm tam sim no rau lub ntiaj teb (feem ntau<10 A). Line-to-line voltages remain balanced, allowing continued equipment operation. An Insulation Monitoring Device (IMD) must provide real-time alarms to prevent secondary faults causing phase-to-phase short circuits.
Tus nqi tseem ceeb: ua kom muaj zog txuas ntxiv ntawm thaj chaw muaj kev pheej hmoo thiab txo qis tawg tawg / hluav taws kub nyhiab los ntawm hluav taws xob txim taws.
Cov ntawv thov raug: Cov av hauv av (tiv thaiv methane cov khoom tawg), thiab petrochism chav), thiab petress
TN-CS system (CSOSITE GROUNDING system)
Cov Nta Cov Nta: Lub Zog Hluav Taws Xob Inlet Siv TN-C (Ib Leeg Cwj Pwm Ua Si. Lub tsev txuas ntxiv yog sib npaug rau tn-s {}}
Cov yam ntxwv zoo sib piv:
TN-s: Ua kom cov neeg ua haujlwm ua kom muaj kev nyab xeeb los ntawm kev ua txhaum sai tab sis pheej hmoo cuam tshuam kev cuam tshuam rau kev cuam tshuam rau lub zog {}}
Nws: maximizes muaj kev sib txuas ntxiv nrog tsawg dua kev ua txhaum tab sis xav tau txoj hlua khi tswj hwm .
TN-CS: Cov nyiaj tshuav nqi siv tau ua haujlwm thiab kev nyab xeeb poob; Cwj mem tus txiv neej breakage txaus ntshai yuav tsum muaj kev ntsuas .
Ii {{{|}}} xob laim kev tiv thaiv kev tiv thaiv: cov tsis tseem ceeb thiab kev ntsuas lub zog
Xob laim overvoltage poses ib qho kev hem thawj rau cov khoom siv fais fab ntawm xob tawm hauv lub hom phiaj kev tiv thaiv tam sim no thiab muaj peev xwm sib luag.
Tub ntxhais ntawm av tiv thaiv cov qauv
impulse grounding tsis kam rau kev tiv thaiv hluav taws xob ywj pheej (tiv thaiv lub ru tsev loj dua lossis sib npaug "
Txhim kho qhov yuav tsum tau ua (tsawg dua los yog sib npaug rau 4 ω): Siv tau:
High/strong lightning activity areas (annual thunderstorm days >90);
Cov chaw tseem ceeb (cov ntaub ntawv cov ntaub ntawv, cov chaw sib txuas lus, tswj chav);
High soil resistivity zones (ρ >500 Ω·m);
Fais fab system nruab nrab aving ntsiab lus (cov lej tshwj xeeb yuav xav tau tsawg dua lossis sib npaug rau 4 .
Nqe 6 ntawm GB 50057 Hais txog Nplhaib Ua Si Network, hais txog lawv cov kev pheej hmoo ntawm thaj chaw.
Kev txhawb nqa rau cov chaw pheej hmoo
Ring Grounding Network: A closed-loop horizontal grounding conductor (galvanized flat steel ≥40mm×4mm or copper strand ≥95mm²) buried >0 {. 5m tob ncig thaj chaw tseem ceeb. Cov haujlwm suav nrog:
Txo cov hauv av tsis kam (nthuav dav thaj tsam ntawm thaj chaw dissipation);
Vaj Huam Sib Luag Vaj Huam Sib Luag (Kev Pab Cuam Tshuam / kov Voltages);
Kev ua haujlwm hauv lub hauv paus av hauv av mus rau hauv composite network .
Muaj kev puas tsuaj tiv thaiv-txo cov txuj ci:
Kev sib sib zog nqus-zoo: DRILLING rau hauv av Aquifers (20-100m qhov tob) rau nruab cov tshuab ntsug;
Resistivity-txo cov tebchaw: backfilling bentonite lossis tshuaj lom neeg ib puag ncig electrodes los txhim kho cov av ua haujlwm;
Kev Txuas Ntxiv Hauv Paus: nthuav tawm network rau cov chaw tsis tshua muaj (e ., pas dej}, pas dej, noo noo);
Tsawg dua los yog sib npaug rau 4 ω + ntiv nplhaib hauv av tes hauj lwm hauv cov kev ntsuam xyuas kev nyab xeeb thiab kev sib sau ua ke thiab kev sib sau ua ke