NECA 410:2005
NECA 410:2005 Installing And Maintaining Liquid-filled Transformers Describes installation and maintenance procedures for liquid-filled transformers.
Table of Contents
Foreword1.Scope
1.1ProductsandApplicationsIncluded
1.2ProductsandApplicationsExcluded
1.3RegulatoryRequirements
2.Definitions
3.Receiving,Inspecting,Handling,andStorage
3.1ReceivingandInspecting
3.2Handling
3.3Storage
3.4Pre-InstallationChecks
4.Installation
4.1GeneralInstallationRequirements
4.2TransformerPadandMounting
4.3GroundingandBonding
4.4LightingArresters
4.5ElectricalConnections
5.Inspecting,Testing,andCommissioning
5.1VisualandMechanicalInspection
5.2AcceptanceTesting
5.3RestoreTransformerFinishes
5.4EnergizingTransformers
6.ProjectClose-OutDeliveries
6.1TestDataandManuals
6.2Training
6.3SparePartsandSpecialTools
7.InspectionsandMaintenance
7.1SafetyProcedures
7.2General
7.3FirstYearofOperation
7.4RoutineInspections
7.5AnnualMaintenance
7.6ComprehensiveElectricalTesting
7.7Re-energizingTransformers
7.8OperatingTransformerSwitches
7.9ReconnectableTerminations
8.InspectionandRe-energizingAfterAdverseOperating
Conditions
8.1InspectionandTestingFollowingaShort-Circuit
ofGround-Fault
8.2TransformerSoakedByorSubmersedUnderWater
9.ElectricalandThermalTesting
9.1General
9.2ContactResistanceTest
9.3InsulationResistanceTest
9.4PolarizationandDielectricAbsorptionIndex
9.5TurnsRatioTest
9.6ExcitationCurrentTest
9.7WindingResistanceTest
9.8InsulationPowerFactorTest
9.9CoreInsulationResistanceTest
9.10HighPotentialTest
9.11InfraredScan
10.SamplingandTestingofInsulatingLiquid
10.1General
10.2SamplingforInsulatingLiquidCharacteristics
10.3SamplingforDissolvedGasAnalysis
10.4TestResults
AnnexA:OverviewofDissolvedGlassed
AnnexB:ReferenceStandards