GB 50169-2016 GB50169-2016電氣裝置安裝工程接地裝置施工及驗(yàn)收規(guī)范:英文

專用

人人文庫

NATIONALSTANDARD

OFTHEPEOPLESREPUBLICOFCHINA

CodeforConstructionandAcceptanceof

GroundingConnectionElectricEquipment

InstallationEngineering

GB50169-2016

ChiefDevelopmentDepartment：ChinaElectricityCouncil

ApprovalDepartment：MinistryofHousingandUrbanRuralDevelopment

-

ofthePeoplesRepublicofChina

ImplementationDate：Apr1，2017專用

人人文庫

ChinaPlanningPress

Beijing2020

ChineseeditionfirstpublishedinthePeoplesRepublicofChinain2017

EnglisheditionfirstpublishedinthePeoplesRepublicofChinain2020專用

byChinaPlanningPress

rd

3Floor，CTower，GuohongBuilding

No.A11，Muxidi-Beili，XichengDistrict

Beijing，100038

PrintedinChinabyBeijingJingyintangGraphicPrintingCenter

?2017byChinaElectricityCouncil

Allrightsreserved.Nopartofthispublicationmaybereproducedortransmittedinanyformor

byanymeans人人文庫，graphic，electronic，ormechanical，includingphotocopying，recording，

oranyinformationstorageandretrievalsystems，withoutwrittenpermissionofthepublisher.

Thisbookissoldsubjecttotheconditionthatitshallnot，bywayoftradeorotherwise，belent，

resold，hiredoutorotherwisecirculatedwithoutthepublisherspriorconsentinanyformof

blindingorcoverotherthanthatinwhichthisispublishedandwithoutasimilarcondition

includingthisconditionbeingimposedonthesubsequentpurchaser.

ISBN978-7-5182-1139-5

AnnouncementoftheMinistryofHousingandUrban-Rural

DevelopmentofthePeoplesRepublicofChina

No.1260

AnnouncementoftheMinistryofHousingandUrbanRuralDevelopmenton

-

PublishingtheNationalStandardofCodeforConstructionandAcceptanceof

GroundingConnectionElectricEquipmentInstallationEngineering

TheCodeforConstructionandAcceptanceofGroundingConnectionElectricEquipment

InstallationEngineeringhasbeenapprovedasanationalstandardwithaserialnumberofGB50169-

2016，andshallbeimplementedfromApril1，2017.Inthisstandard，clauses3.0.4，4.1.8，4.2.9are

mandatoryonesandmustbeimpletmentedstrictly.TheoriginalnationalstandardCodefor

ConstructionandAcceptanceofGroundingConnectionElectricEquipment專用InstallationEngineering

GB50169-2006isabolishedatthesametime.

AuthorizedbytheResearchInstituteofStandardsandNorms，MinistryofhousingandUrban

-

RuralDevelopmentofP.R.China，thisStandardispublishedanddistributedbyChinaPlanningPress.

MinistryofHousingandUrbanRuralDevelopmentofthePeoplesRepublicofChina

-

August18，2016

人人文庫

中華人民共和國住房和城鄉(xiāng)建設(shè)部公告

2019年第338號

住房和城鄉(xiāng)建設(shè)部關(guān)于發(fā)布《電氣裝置安裝工程

接地裝置施工及驗(yàn)收規(guī)范》

等10項(xiàng)工程建設(shè)標(biāo)準(zhǔn)英文版的公告

現(xiàn)批準(zhǔn)《電氣裝置安裝工程接地裝置施工及驗(yàn)收規(guī)范》（GB50169—2016）、《±800kV

直流換流站設(shè)計(jì)規(guī)范》（GB/T50789—2012）、《1000kV系統(tǒng)電氣裝置安裝工程電氣設(shè)備交

接試驗(yàn)標(biāo)準(zhǔn)》（GB/T50832—2013）、《光伏發(fā)電站施工規(guī)范》（GB/T專用50794—2012）、《光伏發(fā)

電站設(shè)計(jì)規(guī)范》（GB/T50797—2012）、《光伏發(fā)電工程驗(yàn)收規(guī)范》（GB/T50796—2012）、《電

氣裝置安裝工程電氣設(shè)備交接試驗(yàn)標(biāo)準(zhǔn)》（GB50150—2016）、《電力設(shè)施抗震設(shè)計(jì)規(guī)范》

（GB50260—2013）、《110kV～750kV架空輸電線路施工及驗(yàn)收規(guī)范》（GB50233—2014）、《電

氣裝置安裝工程串聯(lián)電容器補(bǔ)償裝置施工及驗(yàn)收規(guī)范》（GB51049—2014）英文版。工程建

設(shè)標(biāo)準(zhǔn)英文版與中文版出現(xiàn)異議時(shí)，以中文版為準(zhǔn)。

工程建設(shè)標(biāo)準(zhǔn)英文版由住房和城鄉(xiāng)建設(shè)部組織中國計(jì)劃出版社出版發(fā)行。

中華人民共和國住房和城鄉(xiāng)建設(shè)部

2019年12月11日

人人文庫

Foreword

ThiscodeisrevisedbyChinaElectricPowerResearchInstituteandrelevantdepartmentsonthe

basisofGB50169-2006ElectricalEquipmentInstallationEngineeringCodeforConstructionand

AcceptanceofGroundingDevicesaccordingtotherequirementsoftheAnnouncementofPrintingand

DistributionofEstablishmentandRevisionPlansforNationalStandardsinEngineeringConstruction

2013（JIANBIAO〔2013〕No.6）issuedbyMinistryofHousingandUrbanRuralDevelopment.

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Thiscodecomprises5chapterswiththemaincontentsasfollows：General；Terms；Basic

Requirements；Groundingofelectricequipment；Engineeringhandoverandacceptance.

Comparedwiththeoriginalcode，thiscodeaddsthefollowingcontents：1.BasicRequirements；

2.Resistancereductionofgroundingconnection；3.GroundingofWTGSsandphotovoltaicpower

station；4.Groundingofrelayingprotectionandautomaticsafetyequipment；5.Groundingagainst

lightninginductionandstaticelectricity.

Theprovisionsprintedinboldtypeinthiscodearemandatoryonesandmustbeimpletmented

strictly.

TheMinistryofHousingandUrbanRuralDevelopmentofthePeople專用sRepublicofChinaisin

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chargeoftheadministrationofthiscodeandtheexplanationofthemandatoryprovisions.China

ElectricityCouncilisresponsiblefortheroutinemanagement.ChinaElectricPowerResearchInstitute

isresponsiblefortheexplanationofspecifictechnicalcontents.

Allrelevantorganizationsarekindlyrequestedtosumupandaccumulateyourexperienceinactual

practicesduringtheprocessofimplementingthiscode.Therelevantopinionsandadvice，whenever

necessary，canbepostedorpassedontoChinaElectricPowerResearchInstitute（Address：No.33，

SouthBinheRoad，XichengDistrict，BeijingCity，Postalcode：100055）forreferenceinfuturerevision.

ThefollowingaretheChiefDevelopmentOrganization，ParticipatingDevelopmentOrganizations，

ChiefDraftingStaffandChiefReviewStaffofthiscoderespectively：

ChiefDevelopmentOrganization:

ChinaElectricPowerResearchInstitute

ParticipatingDevelopmentOrganizations:

StateGridSmartPowerGridResearchInstitute

人人文庫ChinaSouthernPowerGridGuangdongProvinceTransmissionandTransformation

EngineeringCompany

StateGridShaanxiElectricPowerCompanyElectricPowerResearchInstitute

AnhuiElectricPowerConstructionEngineeringQualitySupervisionCenterStation

GezhoubaGroupsElectricPowerCompanyLtd.

CEECTianjinElectricPowerConstructionCo.，Ltd.

BeijingShuangyuanEngineeringConsultingandSupervisionCo.，Ltd.

NorthChinaPowerDesignInstituteEngineeringCo.，Ltd.

BeijingAlldayScienceandTechnologyCo.，Ltd.

JiangsuJinheyiCompositeNewMaterialCo.，Ltd.

1··

ChiefDrafters:

ChenXinHanYuJingJinHeGuanhengChenChangcaiWangSen

LiuShihuaGeZhanyuZhouWeixinXuChunliMaGuangWangWei

SunYongchunZhuZhixiang

ChiefReviewers:

ChenFayuXuJunDuShuchunLiQianFangJingYanGuozeng

LiaoGuanghongWeiGuozhuWangYumingLongQingzhiWangGuomin

ChengYuntangGuWei

ChiefTranslators:

JingJinTianXiaoChenXinHanYuMaGuangHaoWenkui

ChengYangchunXuJunGeZhanyuZengGuangyuGuWeiLiKaizhou

ZhuHongHeFei

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2··

Contents

1GeneralProvisions……………（1）

2Terms…………………………（2）

3BasicRequirements……………（4）

4GroundingofElectricEquipment………………（6）

4.1SelectionofGroundingConnection………………（6）

4.2LayingofGroundingConnection…………………（8）

4.3ConnectionofGroundingConductorandGroundingElectrode………（10）

4.4ResistanceReductionofGroundingConnection……………………（12）

4.5GroundingofWindTurbineGeneratorSystem（WTGS）andPhotovoltaicPowerStation………………（13）

4.6GroundingofAirterminationSystem……………（14）

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4.7GroundingofTransmissionTowers………………（15）

4.8GroundingofMainControlBuilding，DispatchingBuildingandCommunicationStation……（16）

4.9GroundingofRelayProtectionandAutomaticSafetyEquipment……（17）

4.10GroundingofMetalSheathofPowerCable………（19）

4.11GroundingofDistributionElectricEquipment……………………專用（19）

4.12GroundingofElectricEquipmentinBuildings……………………（20）

4.13GroundingofPortableandMobileElectricEquipment………………（21）

4.14GroundingagainstLightningInductionandStaticElectricity…………（21）

5EngineeringHandoverandAcceptance………（23）

-

ExplanationofWordinginThisCode……………（24）

ListofQuotedStandards…………（25）

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1GeneralProvisions

Thiscodeisformulatedtoensurethequalityoftheelectricequipmentinstallationengineering

1.0.1

aboutgroundingconnection，facilitatetheimprovementofengineeringconstructiontechnologyand

guaranteethesafeoperationofgroundingconnection.

Thiscodeisapplicabletotheconstructionandacceptanceofgroundingconnectionoftheelectric

1.0.2

equipmentininstallationengineeringbutnottotheconstructionandacceptanceoftheDChighvoltage

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transmissiongroundingelectrode.

Constructionandacceptanceofgroundingconnectionshallnotonlymeettherequirements

1.0.3

stipulatedinthiscode（standard），butalsothoseinthecurrentrelevantonesofthenation.

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·1·

2Terms

Groundingelectrode

2.0.1

Itmeansthemetalconductorsburiedintheground，whichdirectlycontactstheearth.Itincludes

horizontalandverticalgroundingelectrodes.

Naturalgroundingelectrode

2.0.2

Naturalgroundingelectrodereferstothosedirectlycontacttheearthandcanbeservedas

grounding，suchasmetalstructures，metalwellpipes，foundationsofRCCbuilding，metalpipelineand

equipment，etc.

Airterminationsystem

2.0.3-

Itisthegeneraltermofdevicesreceivinglightningstrike，includinglightningrod，lightningstrip，

lightningline，lightninggrid，metalroofandmetalstructure.

Groundingconductor

2.0.4

Itmeansthemetalconductorthatconnectsgroundterminalsofelectricequipmentorair

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terminationsystemwithgroundingelectrode.Ithasnocurrentloadundernormalcircumstances.

Groundingconnection專用

2.0.5

Itisthegeneraltermofgroundingelectrodeandgroundingline.

Grounding

2.0.6

Itmeanstheconnectionofgroundingelectrodewiththeelectricequipment，facilitiesandover

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voltageprotectiondevicesofthepowersystemorbuildingsthroughgroundingline.

Groundingimpedance

2.0.7

Itreferstotheimpedancebetweenthesetpointandthereferencepointofthesystem，deviceor

equipmentatagivenfrequency.

Groundresistance

2.0.8

Itmeanstherealpartofgroundingimpedance.Groundresistancevalueunderthepowerfrequency

isthepowerfrequencygroundresistance.

Neutralline

2.0.9

Itreferstotheconductorelectricallyconnectswithneutralpointandcanbeusedforpower

distribution.

Protectiveground

2.0.10人人文庫

Itreferstogroundingsetformetalshellofelectricequipment，theframeworkofpowerdistribution

equipmentandpolesandtowersoftransmissionlinestopreventthepersonnelandequipmentfrom

possibleelectrificationduetoinsulationdamage.

Concentratedgroundingconnection

2.0.11

Concentratedgroundingconnectionistheadditionalgroundingconnectiontoenhancediffusingof

lightningcurrentandreducethepotential.Forexample，theverticalgroundingelectrodeisequipped

nearthelightningrod.

Groundinggrid

2.0.12

Itreferstothenettedgroundingdevice，whichiscomprisedofverticalandhorizontalgrounding

·2·

electrodesandhasthefunctionsofcurrentdischargeandvoltagesharing.

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Exothermicwelding

2.0.13

Itisaweldingmethodinwhichworkpieceisheatedandmoltendirectlyorindirectlythroughthe

chemicalreactionbetweenmetaloxideandaluminumpowder.

Equipotentialgroundinggrid

2.0.14

Itreferstothegridwhichcomprisesofhorizontalconductorsandinwhicheachnodeis

equipotential.Itisfinallyconnectedwiththegroundinggridinthesoil.

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·3·

3BasicRequirements

Thegroundingconnectionshallbeinstalledbytheconstructioncompanyaccordingtothe

3.0.1

approveddesigndocuments.Specialpersonnelfromprojectmanagementcompanyandsupervision

companyshallberesponsibleforsupervision.

Thenewtechnology，newprocessandnewmaterialsshallbetestedandsubjecttonational

3.0.2

qualifiedverificationandvalidationtomeettherequirementofdesignandsafeuse.

Theinstallationofgroundingconnectionshallbeincoordinationwithcivilworks.Theconcealed

3.0.3

partshallbechecked，acceptedandrecordedbyrelevantdepartmentsbeforebeingcoveredup.

3.0.4Thefollowingmetalpartsintheelectricequipmentmustbegrounded:

1Metalbase，frame，shell，drivingdeviceofelectricequipment；

2Metalbaseandshellofportableormobileelectricapparatus；

3Metalboxofcubiclesubstation；

4SecondarywindingsofCTandPT；

5Metalframeandbaseofpanel（cabinet，box）fordistribution，controlandrelayprotection

；專用

andconsole

6Metalsheath，jointbox，terminalsandmetalprotectiontubeofpowercablesaswellas

shieldinglayerofsecondarycable；

7Cabletray，bracketandsupportstructureofcablewell；

8Framesandequipmentsupportsinsubstation（converterstation）；

9Powerlinetowersequippedwithoverheadgroundwireorelectricequipment；

10Metalfencingofpowerdistributionunit；

11Metalshellofelectricalheatingequipment.

DCsystemneedstobegroundedshallbeinaccordancewiththefollowingrequirements

3.0.5

Thegroundingconductorthatcanformloopcircuitwiththegroundandthroughwhichthe

1

currentnormallyflowsshallbelaidalongtheinsulatingpaddingplateandshallnotbeconnectedwith

metalpipes，buildingsorequipmentcomponentsthroughmetal；

Thegroundingconnectionshouldnotbelaidinsoilwherethecorrosivesubstancecanbe

2

producedbyelectrolyzing.Theexternalgroundingconnectionorsoilimprovementmaybeadoptedif

necessary；人人文庫

TheDCpositivegroundingconductorandgroundingelectrodeshallnotbeconnectedwith

3

naturalgroundingelectrodethroughmetal；thedistancebetweenthemshallnotbelessthan1mwhen

thereisnoinsulation.

Theelectricequipmentshallbereliablyconnectedwiththegroundinggrid.Intheexpansion

3.0.6

project，theconnectionofgroundinggridwiththeexistingoneshallmeetthedesignrequirementsand

shallbeatleastattwopoints.

Thegroundingconnectionacceptancetests，includingconductiontest，shallbecarriedoutafter

3.0.7

thegroundingconnectionisconstructedassoonaspossible.Thegroundresistancevalueshallmeetthe

requirementsofdesign.

·4·

Thegroundingconnectionintheregionwithhighsoilresistivitymaybeputintooperationafter

3.0.8

thecorrespondingmeasuresaredeterminedbythedesigndepartmentifthegroundresistancecannot

meettherequirements.

Thefollowingmetalpartsattachedtothegroundedelectricequipmentandproductionfacilities

3.0.9

maynotbegrounded：

Shellsoftheelectricalmeasuringinstrument，relayandotherlowvoltageapparatusesinstalled

1-

inthedistributionboard，controlpanelandpowerdistributionunits；

Shellsofmotorandelectricapplianceinreliableelectriccontactwiththemachinetoolandbase；

2

Metalsupportinbatteryroomwiththeratedvoltageof220Vandbelow.

3

Groundingconductorshallnotbeusedforotherpurposes.

3.0.10

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·5·

4GroundingofElectricEquipment

4.1SelectionofGroundingConnection

Thegroundingconnectionsshallutilizenaturalgroundingelectrodeburieddirectlyunderground

4.1.1

orunderwater.Thefollowingnaturalgroundingelectrodemaybeused：

Metalpipesburiedunderground，excludingpipesconveyingcombustibleorexplosivematerials；

1

Metalwellpipes；

2

Metalstructureofbuildingreliablyconnectedwiththeground；

3

Metalpipes，pilesandfoundationreinforcingmeshofthehydraulicstructuresandothersimilar

4

structures.

GroundingconductorofACelectricequipmentmaybegroundedthroughthefollowing

4.1.2

groundingelectrodes：

Metalstructure，beamandcolumnofbuildings；

1

Metalstructuresinproduction，suchascranetrack，passageway，platform，frameofcraneand

2

elevator，steelbeamforconveybelt，frameofelectrostaticdustcollectorandsoon.

Thegroundingconnectioninthepowerplantandsubstationshall專用besetwithnotonlynatural

4.1.3

groundingelectrodebutalsoartificialgroundingelectrode，i.e.thegroundinggriddominatedby

horizontalgroundingelectrode.Themeasuringwellseparatingnaturalgroundingelectrodefrom

artificialgroundingelectrodeshallbefurnished.Substationanddistributionsubstationof3kV～10kV

maynotbeartificiallygroundedwhenthereinforcingmeshinthebuildingfoundationisusedasthe

groundingelectrodeandthegroundresistancesatisfiesdefinedvalue.

Selectionofthegroundingconnectionmaterialshallbeinaccordancewiththefollowing

4.1.4

requirements：

Exceptthetemporarygroundingconnection，thegroundingconnectionshallbehotdip

1-

galvanizedifsteelisused.Thehotdipgalvanizedroundsteelandflatsteelshallbeusedforhorizontal

-

laying.Thehotdipgalvanizedanglesteel，steeltubeorroundsteelshallbeusedforverticallaying；

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Whenflatcopperstrip，copperstrandedwire，copperrod，coppercoatedsteel（roundwireand

2

strandedwire），zinccoatedsteelandothermaterialsareusedasthegroundingconnection，theselection

shallmeettherequirementsofdesign；

Aluminumconductorsshallnotbeusedasthegroundingelectrodeorgroundingconductor.

3人人文庫

Thecrosssectionareaoftheartificialgroundingelectrodeofthegroundingconnectionshall

4.1.5

meettherequirementsonthermalstability，voltagesharing，mechanicalstrengthandcorrosion

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resistance.Thecrosssectionareaofthehorizontalgroundingelectrodeshallnotbelessthan75%of

thatofthegroundingconductorconnectedtotheabovementionedgroundingconnection，andshallnot

belessthanthespecificationlistedinTable4.1.51andTable4.1.52.Thecrosssectionareaofthe

--

outgoinglineofthegroundingelectrodeofthepowerlinetowershallnotbelessthan50mm2.

·6·

Table4.1.5-1Minimumspecificationofsteelgroundingelectrodeandgroundingconductor

Type，specificationandunitAbovegroundUnderground

Diameterofroundsteel（mm）88/10

FlatCrosssectionarea（mm2）4848

steelThickness（mm）44

Thicknessofanglesteel（mm）2.54

Wallthicknessofsteelpipe（mm）2.53.5/2.5

Notes：1Thenumeratoranddenominatorofthediameteroftheundergroundroundsteelcorrespondtotheoverheadlineandthe

groundinggridofthepowerplantandsubstationrespectively.

2Thenumeratoranddenominatorofthewallthicknessoftheundergroundsteeltubecorrespondtothegroundembeddedinthe

soilandembeddedinindoorconcreterespectively.

Table4.1.5-2Minimumspecificationofcopperandcoppercoatedsteelgroundingelectrode

Type，specificationandunitAbovegroundUnderground

Horizontalgroundingelectrode8

Diameterofcopperrod（mm）8

Verticalgroundingelectrode15

Crosssectionarea（mm2）/thickness（mm）ofcopperbar50/250/2

Wallthicknessofcopperpipe（mm）23

Crosssectionareaofcopperstrandedconductor（mm2）5050

Diameterofcoppercoatedroundsteel（mm）8專用10

Diameterofcoppercoatedsteelstrandedconductor（mm）810

Crosssectionareaofcoppercoatedflatsteel（mm2）/thickness（mm）48/448/4

Notes：1Thebarecopperstrandedwireshouldnotbeusedasthegroundingelectrodeofsmallgroundingconnection.Whenitisusedas

thegroundingelectrodeofthegroundinggrid，thecrosssectionareashallmeettherequirementsofdesign.

2Thesinglestranddiameterofthecopperstrandedconductorisnotlessthan1.7mm.

3Thecoppercoatedsteelspecificationisthesteelsizeandthecopperlayerthicknessshallnotbelessthan0.25mm.

Thezinclayerthicknessofthehotdipgalvanizedsteelandzinccoatedsteelforconnecting

4.1.6-

electrodeshallmeettherequirementsofdesign.

Theminimumcrosssectionareaoftheexposedgroundingconnectorabovegroundconnectedto

4.1.7

thegroundingelectrodeorprotectiveconductor（PE）onthelowvoltageelectricequipmentshallmeet

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therequirementsoftheprovisionsinTable4.1.7.

Table4.1.7Minimumcrosssectionareaofexposedcoppergroundingconductor

onlow-voltageelectricequipmentground

Minimumcrosssectionarea

Name

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Exposedlaidbareconductor4

Insulatedconductor1.5

Groundingcoreofcableorgroundingcoreofmulticoreconductorwrappedinsidethe

-1

sameprotectiveshellwithphasewire

4.1.8Theflexiblemetaltubing，metalsheathormetalnetofpipelineinsulationlayer，the

conductorleadsheetoflow-voltagelightingnetworkandthemetalsheathofcablemustnotbe

usedasgroundingconductors.

Theselffixedconnectororthehoseconnectorshallbeadoptedatbothendsoftheflexiblemetal

4.1.9-

tubingandtheflexiblemetaltubingshallbeelectricallywellconnectedwiththesteelpipese