Dab tsi yog cov specifications thiab cov kev xav tau rauhluav taws xob grounding?
Cov txheej txheem kev tiv thaiv rau kev teeb tsa hluav taws xob muaj xws li: kev tiv thaiv hauv av, tiv thaiv nruab nrab kev sib txuas, rov qab grounding,
ua hauj lwm hauv av, thiab lwm yam. Ib qho hluav taws xob zoo sib txuas ntawm ib feem ntawm cov khoom siv hluav taws xob thiab lub ntiaj teb hu ua grounding.Cov hlau
tus neeg xyuas pib lossis pawg neeg hlau txuas ncaj qha nrog lub ntiaj teb av hu ua grounding body: hlau conductor txuas lub
grounding ib feem ntawm cov khoom siv hluav taws xob mus rau lub cev hauv av hu ua grounding wire;Lub cev grounding thiab grounding hlau yog
collectively hu ua grounding devices.
Grounding tswvyim thiab hom
(1) Kev tiv thaiv xob laim hauv av: grounding rau lub hom phiaj ntawm kev qhia sai sai rau hauv lub ntiaj teb thiab tiv thaiv xob laim puas.
Yog tias cov cuab yeej tiv thaiv xob laim sib koom ua ke nrog cov phiaj xwm dav dav nrog kev ua haujlwm hauv av ntawm cov khoom siv xov tooj, cov av tiv thaiv
yuav tsum ua kom tau raws li qhov tsawg kawg nkaus.
(2) AC ua haujlwm hauv av: hlau kev sib txuas ntawm ib qho taw tes hauv lub zog hluav taws xob thiab lub ntiaj teb ncaj qha lossis los ntawm cov cuab yeej tshwj xeeb.Ua haujlwm
grounding feem ntau yog hais txog grounding ntawm transformer nruab nrab point lossis nruab nrab kab (N kab).N xaim yuav tsum yog tooj liab tub ntxhais insulated hlau.Nyob ntawd
yog auxiliary equipotential terminals nyob rau hauv lub hwj chim faib, thiab cov equipotential terminals feem ntau yog nyob rau hauv lub txee.Nws yuav tsum tau muab sau tseg tias
lub davhlau ya nyob twg thaiv tsis tuaj yeem raug nthuav tawm;Nws yuav tsum tsis txhob tov nrog lwm cov av hauv av, xws li DC grounding, shielding grounding, anti-static
grounding, thiab lwm yam;Nws tsis tuaj yeem txuas nrog PE kab.
(3) Kev tiv thaiv kev nyab xeeb hauv av: kev tiv thaiv kev nyab xeeb hauv av yog ua kom muaj kev sib txuas hlau zoo ntawm cov hlau tsis muaj hluav taws xob.
khoom siv thiab lub cev grounding.Cov khoom siv hluav taws xob hauv lub tsev thiab qee cov khoom siv hlau nyob ze ntawm cov khoom siv txuas nrog
PE kab, tab sis nws yog nruj me ntsis txwv tsis pub txuas PE kab nrog N kab.
(4) DC grounding: Yuav kom ntseeg tau qhov tseeb thiab ruaj khov ntawm txhua yam khoom siv hluav taws xob, yuav tsum tau muab cov ntaub ntawv muaj peev xwm ruaj khov.
mus rau lub zog ruaj khov.Insulated tooj liab tub ntxhais hlau nrog loj seem cheeb tsam yuav siv tau raws li cov hlau lead, ib kawg ntawm uas yog ncaj qha kev cob cog rua nrog lub
siv peev xwm, thiab lwm qhov kawg yog siv rau DC grounding ntawm cov khoom siv hluav taws xob.
(5) Anti static grounding: lub hauv av los tiv thaiv kev cuam tshuam ntawm hluav taws xob zoo li qub tsim nyob rau hauv qhov chaw qhuav ntawm chav computer hauv chav.
ntse lub tsev rau cov khoom siv hluav taws xob yog hu ua anti-static grounding.
(6) shielding grounding: txhawm rau tiv thaiv kev cuam tshuam sab nraud ntawm electromagnetic, lub shielding hlau lossis hlau yeeb nkab sab hauv thiab sab nraud hluav taws xob.
cov khoom siv enclosure thiab cov khoom siv yog grounded, uas yog hu ua shielding grounding.
(7) Lub zog hauv av: hauv cov khoom siv hluav taws xob, txhawm rau tiv thaiv kev cuam tshuam hluav taws xob ntawm ntau zaus los ntawm kev cuam tshuam los ntawm AC thiab DC lub zog
kab thiab cuam tshuam rau kev ua haujlwm ntawm cov teeb liab qis, AC thiab DC lim tau teeb tsa.Cov av ntawm cov lim dej yog hu ua lub zog grounding.
Kev ua haujlwm ntawm av yog muab faib ua kev tiv thaiv hauv av, ua haujlwm hauv av thiab tiv thaiv zoo li qub
(1) Lub plhaub hlau, pob zeb, ncej, thiab lwm yam ntawm cov khoom siv hluav taws xob tuaj yeem raug hluav taws xob vim kev puas tsuaj los ntawm rwb thaiv tsev.Txhawm rau tiv thaiv qhov xwm txheej no los ntawm
ua rau muaj kev phom sij rau tus kheej thiab tsis txhob muaj kev sib tsoo hluav taws xob, cov hlau plhaub ntawm cov khoom siv hluav taws xob txuas nrog cov khoom siv hauv av
tiv thaiv av.Thaum tib neeg lub cev kov cov khoom siv hluav taws xob nrog lub plhaub hluav taws xob, kev sib cuag ntawm cov av
Lub cev yog deb tshaj li tib neeg lub cev tsis kam, Feem ntau ntawm cov tam sim no nkag mus rau hauv lub ntiaj teb los ntawm lub grounding lub cev, thiab tsuas yog ib feem me me ntws los ntawm lub ntiaj teb no.
tib neeg lub cev, uas yuav tsis ua rau tib neeg lub neej.
(2) Kev siv av ua kom ntseeg tau tias cov khoom siv hluav taws xob ua haujlwm tau zoo nyob rau hauv ib txwm muaj thiab raug xwm txheej hu ua haujlwm
hauv av.Piv txwv li, qhov ncaj qha grounding thiab indirect grounding ntawm nruab nrab point raws li zoo raws li rov qab grounding ntawm xoom kab thiab xob laim.
kev tiv thaiv grounding yog txhua yam ua haujlwm grounding.Txhawm rau ua kom pom xob laim rau hauv av, txuas lub davhlau ya nyob twg ntawm xob laim
cov cuab yeej tiv thaiv (xov tooj cua, thiab lwm yam) rau hauv av kom tshem tawm qhov teeb meem ntawm xob laim overvoltage rau cov khoom siv hluav taws xob, khoom ntiag tug,
tseem hu ua overvoltage tiv thaiv grounding.
(3) Cov av hauv av ntawm cov roj av, cov khoom siv roj av, cov kav dej, cov khoom siv hluav taws xob, thiab lwm yam yog hu ua anti-static grounding los tiv thaiv kev cuam tshuam.
ntawm electrostatic txaus ntshai.
Cov kev xav tau rau kev txhim kho cov khoom siv hauv av
(1) Cov xaim hauv av feem ntau yog 40mm × 4mm galvanized ca steel.
(2) Lub cev hauv av yuav tsum yog galvanized steel yeeb nkab lossis lub kaum sab xis steel.Txoj kab uas hla ntawm cov yeeb nkab steel yog 50mm, cov yeeb nkab phab ntsa thickness tsis tsawg
tshaj 3.5mm, thiab qhov ntev yog 2-3 m.50mm rau lub kaum sab xis steel × 50mm × 5mm.
(3) Sab saum toj ntawm lub cev hauv av yog 0.5 ~ 0.8m deb ntawm av kom tsis txhob thawing av.Tus naj npawb ntawm cov kav hlau lossis lub kaum sab xis nyob ntawm
Nyob rau hauv cov av resistivity nyob ib ncig ntawm lub grounding lub cev, feem ntau tsis tsawg tshaj li ob, thiab qhov sib nrug ntawm txhua tus yog 3 ~ 5m
(4) Qhov kev ncua deb ntawm lub cev hauv av thiab lub tsev yuav tsum yog ntau tshaj 1.5m, thiab qhov kev ncua deb ntawm lub cev hauv av thiab lub tsev
Txoj kev ywj pheej xob laim grounding lub cev yuav tsum ntau tshaj 3m.
(5) Lap vuam yuav tsum siv rau kev sib txuas ntawm cov xaim hauv av thiab lub cev hauv av.
Txoj kev txo cov av resistivity
(1) Ua ntej kev teeb tsa ntawm cov cuab yeej hauv av, qhov kev tiv thaiv ntawm cov av nyob ib ncig ntawm lub cev hauv av yuav tsum nkag siab.Yog siab heev,
kev ntsuas tsim nyog yuav tsum raug coj los xyuas kom meej tias tus nqi hauv av yog tsim nyog.
(2) Hloov cov qauv av nyob ib ncig ntawm lub cev hauv av hauv 2 ~ 3m ntawm cov av nyob ib ncig ntawm lub cev hauv av, thiab ntxiv cov khoom uas yog
impermeable rau dej thiab muaj dej zoo nqus, xws li charcoal, coke cinder los yog slag.Txoj kev no tuaj yeem txo cov av resistivity rau
thawj 15 ~ 110.
(3) Siv ntsev thiab charcoal kom txo cov av tiv taus.Siv ntsev thiab charcoal tamp hauv txheej.Cov charcoal thiab nplua yog tov rau hauv ib txheej, txog
10 ~ 15cm tuab, thiab tom qab ntawd 2 ~ 3cm ntawm ntsev yog paving, tag nrho ntawm 5 ~ 8 txheej.Tom qab paving, tsav mus rau hauv lub cev av.Txoj kev no tuaj yeem txo qhov
resistivity rau tus thawj 13 ~ 15.Txawm li cas los xij, ntsev yuav ploj nrog dej ntws dhau sijhawm, thiab feem ntau nws yog qhov tsim nyog yuav tsum tau rov ua dua ib zaug ntxiv
tshaj li ob xyoos.
(4) Cov av tiv taus tuaj yeem txo mus rau 40% los ntawm kev siv cov tshuaj tiv thaiv ntev ntev.Lub grounding kuj ntawm cov khoom siv hluav taws xob
yuav tsum tau sim ib xyoos ib zaug nyob rau lub caij nplooj ntoos hlav thiab lub caij nplooj zeeg thaum muaj nag tsawg los xyuas kom meej tias cov av tsim nyog.Feem ntau, tshwj xeeb
cov cuab yeej (xws li ZC-8 grounding resistance tester) yog siv rau kev sim, thiab ammeter voltmeter txoj kev kuj tseem siv tau rau kev kuaj.
Cov ntsiab lus ntawm kev soj ntsuam hauv av muaj xws li
(1) Txawm hais tias qhov txuas txuas yog xoob lossis xeb.
(2) Txawm hais tias corrosion ntawm grounding hlau thiab grounding lub cev hauv qab hauv av yog desoldered.
(3) Txawm hais tias cov xaim hauv av hauv av puas, tawg, corroded, thiab lwm yam. Cov kab hluav taws xob ntawm cov khoom siv hluav taws xob tuaj, suav nrog cov nruab nrab.
kab, yuav tsum muaj ib feem ntawm tsis pub tsawg tshaj 16 mm2 rau txhuas hlau thiab tsis pub tsawg tshaj 10 mm2 rau tooj liab hlau.
(4) Txhawm rau txheeb xyuas qhov sib txawv ntawm kev siv ntau yam conductors, theem kab, kev ua haujlwm xoom kab thiab kab tiv thaiv yuav tsum txawv ntawm
cov xim sib txawv los tiv thaiv cov theem kab los ntawm kev sib xyaw nrog xoom kab lossis kev ua haujlwm xoom kab los ntawm kev sib xyaw nrog kev tiv thaiv xoom
kab.Txhawm rau kom ntseeg tau qhov tseeb kev sib txuas ntawm ntau lub qhov (socket), peb-theem tsib xaim hluav taws xob faib hom yuav tsum tau siv.
(5) Rau qhov hloov pauv huab cua tsis siv neeg lossis fuse ntawm cov khoom siv hluav taws xob ntawm tus neeg siv kawg, yuav tsum tau nruab ib qho kev tiv thaiv ib zaug hauv nws.Cov neeg siv kab
uas tau tawm ntawm kev kho lub sij hawm ntev, kev laus rwb thaiv tsev los yog nce load, thiab cov seem tsis me me, yuav tsum tau hloov sai li sai tau
txhawm rau tshem tawm cov hluav taws xob hluav taws xob thiab muab cov xwm txheej rau kev ua haujlwm ib txwm muaj ntawm cov khoom tiv thaiv to.
(6) Txawm li cas los xij, kev tiv thaiv hauv av thiab cov xaim nruab nrab ntawm peb yam khoom siv tsib xaim hluav taws xob hauv lub zog hluav taws xob yuav tsum tsis txhob
yuav tsum tsawg dua 1/2 ntawm theem kab, thiab cov xaim hauv av thiab cov xaim nruab nrab ntawm lub teeb pom kev zoo, txawm tias peb yam tsib xaim lossis ib yam peb
xaim system, yuav tsum yog tib yam li cov khoom kab.
(7) Cov kab tseem ceeb ntawm kev ua haujlwm hauv av thiab kev tiv thaiv hauv av tau tso cai sib koom, tab sis nws cov seem yuav tsum tsis pub tsawg dua ib nrab ntawm cov seem.
ntawm theem kab.
(8) Lub hauv paus ntawm txhua lub cuab yeej hluav taws xob yuav tsum txuas nrog cov kab hauv av nrog cov xaim hauv av.Nws tsis pub txuas
ob peb lub tshuab hluav taws xob uas yuav tsum tau grounded nyob rau hauv series nyob rau hauv ib tug grounding hlau.
(9) Ntu ntawm tooj liab grounding hlau ntawm 380V faib lub thawv, kho lub thawv fais fab thiab lub thawv teeb pom kev zoo yuav tsum> 4 hli2, ntu
ntawm liab qab txhuas hlau yuav tsum> 6 mm2, seem ntawm insulated tooj liab hlau yuav tsum> 2.5 mm2, thiab seem ntawm insulated txhuas hlau yuav tsum> 4 hli2.
(10) Qhov kev ncua deb ntawm cov xaim hauv av thiab hauv av yuav tsum yog 250-300mm.
(11) Kev ua haujlwm hauv av yuav tsum tau pleev xim rau saum npoo nrog cov kab txaij daj thiab ntsuab, kev tiv thaiv hauv av yuav tsum tau pleev xim rau saum npoo nrog dub,
thiab nruab nrab kab ntawm cov cuab yeej yuav tsum tau pleev xim rau lub teeb xiav cim.
(12) Nws tsis raug tso cai siv cov hlau sheath lossis hlau mesh ntawm cov yeeb nkab nab, cov yeeb nkab rwb thaiv tsev txheej thiab cable hlau sheath raws li cov xaim hauv av.
(13) Thaum cov xaim hauv av yog welded, lub caj npab vuam yuav tsum tau siv rau vuam hauv av xaim.Lub puab tsaig ntev yuav tsum ua tau raws li qhov yuav tsum tau ua kom lub tiaj tus
steel yog 2 npaug ntawm nws qhov dav (thiab tsawg kawg 3 npoo yog welded), thiab cov hlau puag ncig yog 6 npaug ntawm nws txoj kab uas hla (thiab yuav tsum muaj ob sab vuam).Thaum lub
puag ncig steel yog txuas nrog lub tiaj tus hlau, lub caj dab vuam ntev yog 6 npaug ntawm cov hlau puag ncig (thiab yuav tsum tau siv ob sab vuam).
(14) tooj liab thiab txhuas hlau yuav tsum tau crimped nrog kho screws mus txuas nrog grounding bar, thiab yuav tsum tsis txhob twisted.Thaum tooj liab
Cov xaim hloov pauv tau siv los ua cov xaim hauv av, qhov ntev yuav tsum tsim nyog, thiab cov hlua crimping yuav tsum txuas nrog cov ntsia hlau hauv av.
(15) Thaum lub sijhawm ua haujlwm ntawm cov khoom siv, tus neeg teb xov tooj yuav tsum xyuas tias cov khoom siv hluav taws xob hauv av tau txuas nrog cov khoom siv hluav taws xob zoo.
grounding grid thiab cov khoom siv hluav taws xob, thiab tsis muaj qhov tawg uas txo qhov seem ntawm cov xaim hauv av, txwv tsis pub nws yuav raug kho raws li qhov tsis xws luag.
(16) Thaum lub sij hawm lees txais cov khoom siv tu, nws yog ib qho tsim nyog yuav tsum tau xyuas tias cov khoom siv hluav taws xob hauv av yog qhov zoo.
(17) Lub Tsev Haujlwm Saib Xyuas Cov Khoom Siv yuav tsum tsis tu ncua xyuas cov khoom siv hluav taws xob hauv av, thiab ceeb toom rau lub sijhawm kho yog tias muaj teeb meem.
(18) Kev tiv thaiv hauv av ntawm cov khoom siv hluav taws xob yuav tsum tau saib xyuas raws li cov kev cai ntawm lub voj voog lossis thaum lub sijhawm ua haujlwm loj thiab me.
ntawm cov khoom siv.Yog tias pom muaj teeb meem, cov laj thawj yuav tsum tau txheeb xyuas thiab kho raws sijhawm.
(19) Cov khoom siv hluav taws xob hauv av thiab cov khoom siv hluav taws xob hauv av yuav tsum tau ua los ntawm Cov Khoom Siv.
Lub Tsev Haujlwm Saib Xyuas Kev Ua Haujlwm raws li Txoj Cai Lij Choj thiab Kev Tiv Thaiv Kev Ntsuas ntawm Cov Khoom Siv Hluav Taws Xob, thiab cov khoom siv hluav taws xob hauv av qis
yuav tsum tau ua los ntawm lub tuam tsev nyob rau hauv kev txiav txim ntawm cov khoom siv.
(20) Lub luv luv Circuit Court tam sim no ntawm cov khoom siv hauv av txais qhov siab tshaj plaws symmetrical tivthaiv ntawm qhov siab tshaj plaws luv luv tam sim no
ntws mus rau hauv av los ntawm cov khoom siv hauv av nyob rau hauv rooj plaub ntawm sab hauv thiab sab nraud luv luv ntawm cov khoom siv hauv av.Tam sim no yuav tsum tau txiav txim
Raws li kev ua haujlwm siab tshaj plaws ntawm lub kaw lus tom qab 5 txog 10 xyoo ntawm kev txhim kho, thiab luv luv Circuit Court tam sim no faib ntawm
grounding nruab nrab cov ntsiab lus nyob rau hauv lub system thiab qhov sib cais grounding luv luv Circuit Court tam sim no nyob rau hauv lub xob laim conductor yuav tsum tau txiav txim siab.
Cov khoom siv hauv qab no yuav tsum muaj av
(1) Secondary coil ntawm tam sim no transformer.
(2) Enclosures ntawm faib boards thiab tswj vaj huam sib luag.
(3) Lub kaw lus ntawm lub cev muaj zog.
(4) Lub plhaub ntawm lub cable sib koom ua ke thiab cov hlau sheath ntawm lub cable.
(5) Lub hauv paus hlau lossis vaj tsev ntawm qhov hloov pauv thiab nws cov khoom sib kis.
(6) Hlau puag ntawm high-voltage insulator thiab bushing.
(7) Cov kav hlau rau hauv tsev thiab sab nraum zoov.
(8) Metering meter grounding davhlau ya nyob twg.
(9) Cov ntaub thaiv npog rau cov khoom siv hluav taws xob thiab teeb pom kev zoo.
(10) Hlau thav duab ntawm cov khoom siv hluav taws xob sab hauv tsev thiab sab nraum zoov thiab cov hlau thaiv ntawm qhov chaw nyob.
Muaj feem xyuam rau lub cev muaj zog grounding
(1) Lub cev muaj zog grounding hlau yuav tsum tau txuas nrog cov kab sib txuas hauv av ntawm tag nrho cov nroj tsuag los ntawm cov hlau tiaj tus.Yog tias nws nyob deb ntawm lub hauv paus tseem ceeb
kab los yog lub tiaj tus hlau grounding hlau yog teem rau kev zoo nkauj ntawm ib puag ncig, lub ntuj grounding lub cev yuav tsum tau siv raws li deb li deb.
ua tau, los yog ca tooj liab hlau yuav tsum tau siv raws li cov av xaim.
(2) Rau cov motors nrog grounding screws ntawm lub plhaub, cov xaim hauv av yuav tsum tau txuas nrog cov ntsia hlau hauv av.
(3) Rau cov motors tsis muaj grounding screws ntawm lub plhaub, nws yuav tsum tau rau nruab grounding screws ntawm qhov tsim nyog txoj hauj lwm ntawm lub cev muaj zog plhaub.
txuas nrog grounding hlau.
(4) Lub plhaub lub cev muaj zog nrog kev tiv thaiv hluav taws xob zoo nrog lub hauv paus hauv av yuav tsis raug av, thiab cov xaim hauv av yuav tsum tau npaj.
zoo nkauj thiab zoo nkauj.
Cov kev cai tsim nyog rau switchboard grounding
(1) Cov xaim hauv av ntawm lub rooj tsav xwm faib khoom yuav tsum txuas nrog cov phiaj xwm hauv av ntawm tag nrho cov nroj tsuag los ntawm cov hlau tiaj tus.Yog nyob deb
grounding lub ntsiab kab los yog lub tiaj tus hlau grounding hlau layout cuam tshuam qhov zoo nkauj ntawm ib puag ncig, lub ntuj grounding lub cev yuav tsum tau
siv kom deb li deb tau, los yog cov hlau mos tooj liab yuav tsum tau siv los ua cov xaim hauv av.
(2) Thaum tus neeg xyuas pib liab qab siv los ua cov xaim hauv av ntawm cov hluav taws xob qis qis, ntu yuav tsum tsis pub tsawg dua 6mm2, thiab thaum twg
insulated tooj liab hlau yog siv, seem yuav tsum tsis txhob tsawg tshaj li 4mm2.
(3) Rau lub rooj sib tham nrog cov ntsia hlau hauv av ntawm lub plhaub, cov xaim hauv av yuav tsum tau txuas nrog cov ntsia hlau hauv av.
(4) Rau lub rooj tsav xwm faib khoom yam tsis muaj qhov ntsia hlau ntsia hlau rau ntawm lub plhaub, nws yuav tsum tau nruab cov ntsia hlau hauv av ntawm txoj hauj lwm kom zoo.
faib board plhaub los txuas nrog cov kab hauv av.
(5) Lub plhaub ntawm lub rooj sib tham nrog cov khoom siv hluav taws xob txhim khu kev qha nrog lub cev hauv av tuaj yeem ua tsis tau.
Kev tshuaj xyuas thiab ntsuas txoj hauv kev ntawm grounding hlau
(1) Ua ntej qhov kev sim, qhov kev nyab xeeb txaus yuav tsum tau khaws cia los ntawm cov khoom siv kuaj kom tsis txhob muaj kev sib cuag nrog cov khoom nyob thiab tig,
thiab qhov kev xeem yuav tsum tau ua los ntawm ob tug neeg.
(2) Ua ntej qhov kev xeem, xaiv cov iav tiv thaiv ntawm lub multimeter, luv luv ntawm ob qhov kev sojntsuam ntawm multimeter, thiab cov iav tiv thaiv ntawm lub calibration
meter qhia 0.
(3) Txuas ib kawg ntawm qhov kev sojntsuam mus rau hauv av xaim thiab lwm qhov kawg rau lub davhlau ya nyob twg tshwj xeeb rau cov khoom siv hauv av.
(4) Thaum cov cuab yeej kuaj tsis muaj qhov tshwj xeeb hauv av, qhov kawg ntawm qhov kev sojntsuam yuav tsum ntsuas ntawm lub qhov rooj lossis
hlau tivthaiv ntawm cov khoom siv hluav taws xob.
(5) Daim phiaj hauv av tseem ceeb lossis kev sib txuas txhim khu kev qha nrog cov phiaj xwm hauv av yuav tsum raug xaiv raws li qhov chaw nres nkoj hauv av, thiab
nto oxide yuav tsum tau muab tshem tawm kom ntseeg tau tias kev sib cuag zoo.
(6) Tus nqi yuav tsum tau nyeem tom qab qhov ntsuas ntsuas tau ruaj khov, thiab tus nqi hauv av yuav tsum ua raws li cov cai.
Post lub sij hawm: Oct-10-2022