NEMA SM 24:1991 (R2002)

NEMA SM 24:1991 (R2002) Land Based Steam Turbine Generator Sets 0 To 33,000 Kw Defines construction standards and testing and performance requirements for single stage and multi stage steam turbines, reduction gears, air cooled electric generators, switchgear, and auxiliary syst

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Table of Contents

Foreword
Scope
1Referencedstandardsanddefinitions
Referencedstandards
Definitions
2Construction
General
Typesofsteamturbines
Steamturbinecomponents
Featuresandaccessories
Turbinegeneratorrating
Thermodynamicterms
Turbineconnections
Lubrication
Provisionsfortheenvironment
Generalmechanicalrequirements
Gearconstruction
Typesofgenerators
Generatorcomponents
Generalelectricalrequirements
3Controls
Governingsystem
Speedgoverningsystemclassification
Steampressurecontrol
Compensatedcontrolsystem
Electronicgoverningsystem
Automaticstartcontrols
Turbinegeneratorcontrols
Synchronousgenerator
Inductiongenerator
Generationsystemcontrol
Generatorvoltagecontrol
Generatorcontrolpanelandswitchgear
4Protection
Basicfeatures
Overcurrent
5Factorytesting
Turbine
Gear
Generator
Combinedtest(optional)
6Soundpressurelevels
General
Soundpressurelevels
Soundpressurelevelmeasurementprocedure
Correctionforbackgroundnoise
Soundresolution
Instruments
Soundattenuation
7Preparationforshipmentandstorage
Shippingpreparation
Shipment
Receiptandstorageofequipment
8Installation
Introduction
Supervisionofinstallation
Installation
Steampipingsystems
Drainpiping
Leak-offs
Full-flowreliefdevice
Couplingalignment
Grouting
Flushingoilsystem
Generatorleads
Sampleproblems
9Operationandmaintenance
Introduction
Operation
Noncondensingturbineoperationofamultistage
condensingturbine
Typicalstartingsequenceforasteamturbine
generatorset
Maintenance
Internalwaterwashing
Steampurity
10Inquiryguide
Appendix

Abstract

Defines construction standards and testing and performance requirements for single stage and multi stage steam turbines, reduction gears, air cooled electric generators, switchgear, and auxiliary systems. Coverage includes shaftseals, rotor assembly, controlling device, nameplate data, generator constants, maximum speed rise, voltage control, generation system control, overspeed sensing device, sound pressure levels, sound attenuation, supervision of installation, coupling alignment, internal water washing, and receipt and storage of equipment.

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