Cov khoom siv hauv av hauv lub thawv-hom substation

Txhawm rau txhim kho kev nyab xeeb hauv kev ua haujlwm, cov kab hauv av yuav raug muab tso rau hauv cov khoom siv sib txawv kom txo qis hauv cov khoom siv hluav taws xob thiab hluav taws xob poob siab. Ntau cov khoom siv hauv av thiab lawv cov haujlwm tau piav qhia hauv qab no.

1. xob laim tiv thaiv grounding:

Yuav kom ceev nrooj qhia xob laim rau hauv lub ntiaj teb, nws yog lub hauv paus rau lub hom phiaj ntawm kev tiv thaiv xob laim.

Yog tias cov cuab yeej tiv thaiv hluav taws xob siv nrog kev ua haujlwm hauv av ntawm cov khoom siv hluav taws xob hauv cov phiaj xwm hauv av, qhov kev tiv thaiv hauv av yuav tsum ua kom tau raws li qhov tsawg kawg nkaus.

2. AC ua haujlwm hauv av:

Ib qho taw qhia hauv lub zog hluav taws xob txuas nrog lub ntiaj teb ncaj qha lossis los ntawm cov cuab yeej tshwj xeeb.

Kev ua haujlwm hauv av feem ntau yog hais txog qhov av ntawm qhov nruab nrab ntawm qhov hloov pauv lossis kab nruab nrab (N kab). N xaim yuav tsum tau insulated nrog tooj liab core. Muaj cov equipotential terminals nyob rau hauv lub hwj chim faib, thiab cov equipotential terminals feem ntau yog nyob rau hauv lub txee. Nws yuav tsum raug sau tseg tias lub davhlau ya nyob twg tsis tuaj yeem raug nthuav tawm. Nws tsis tuaj yeem sib xyaw nrog lwm cov av hauv av, xws li DC grounding, shielding grounding, thiab anti-static grounding. Nws kuj tsis tuaj yeem txuas nrog PE kab.

3. Kev nyab xeeb grounding:

Kev nyab xeeb hauv av yog ua kom muaj kev sib txuas hlau zoo ntawm cov hlau tsis muaj nqi ntawm cov khoom siv hluav taws xob thiab lub cev hauv av. 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:

Txhawm rau ua kom txhua yam khoom siv hluav taws xob muaj qhov raug zoo thiab muaj kev ruaj ntseg siab, ntxiv rau cov khoom siv hluav taws xob ruaj khov, nws yuav tsum muaj peev xwm siv tau ruaj khov. Insulated tooj liab tub ntxhais hlau nrog ib tug loj cross-sectional cheeb tsam yuav siv tau raws li cov hlau lead, ib kawg yog txuas ncaj qha mus rau lub peev xwm siv, thiab lwm yam kawg yog siv rau DC grounding ntawm cov khoom siv hluav taws xob.

5. Shield grounding thiab anti-static grounding:

Kev siv av los tiv thaiv kev cuam tshuam ntawm cov hluav taws xob zoo li qub uas tsim los ntawm qhov chaw qhuav ntawm chav tsev computer hauv lub tsev ntse rau cov khoom siv hluav taws xob hu ua anti-static grounding. Txhawm rau tiv thaiv kev cuam tshuam ntawm cov khoom siv hluav taws xob sab nraud, lub hauv paus txheej txheej ntawm cov khoom siv hluav taws xob thiab cov ntaub thaiv npog sab hauv thiab sab nraud ntawm cov khoom siv lossis cov kav hlau hlau uas dhau los ntawm nws yog hu ua shielding grounding.

6. Fais fab grounding system:

Hauv cov khoom siv hluav taws xob, AC thiab DC cov ntxaij lim dej tau teeb tsa los tiv thaiv kev cuam tshuam ntawm ntau zaus los ntawm kev cuam tshuam los ntawm AC thiab DC fais fab kab thiab cuam tshuam rau kev ua haujlwm ntawm cov teeb liab qis. Lub grounding ntawm lub lim yog hu ua lub zog grounding.