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NEMA SM 24-1991 (R1997, R2002)

Withdrawn
Withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

LAND BASED STEAM TURBINE GENERATOR SETS 0 TO 33,000 kW
Withdrawn date

12-31-2015

Published date

12-06-2012

Foreword
Scope
1 Referenced standards and definitions
      Referenced standards
      Definitions
2 Construction
      General
      Types of steam turbines
      Steam turbine components
      Features and accessories
      Turbine generator rating
      Thermodynamic terms
      Turbine connections
      Lubrication
      Provisions for the environment
      General mechanical requirements
      Gear construction
      Types of generators
      Generator components
      General electrical requirements
3 Controls
      Governing system
      Speed governing system classification
      Steam pressure control
      Compensated control system
      Electronic governing system
      Automatic start controls
      Turbine generator controls
      Synchronous generator
      Induction generator
      Generation system control
      Generator voltage control
      Generator control panel and switchgear
4 Protection
      Basic features
      Overcurrent
5 Factory testing
      Turbine
      Gear
      Generator
      Combined test (optional)
6 Sound pressure levels
      General
      Sound pressure levels
      Sound pressure level measurement procedure
      Correction for background noise
      Sound resolution
      Instruments
      Sound attenuation
7 Preparation for shipment and storage
      Shipping preparation
      Shipment
      Receipt and storage of equipment
8 Installation
      Introduction
      Supervision of installation
      Installation
      Steam piping systems
      Drain piping
      Leak-offs
      Full-flow relief device
      Coupling alignment
      Grouting
      Flushing oil system
      Generator leads
      Sample problems
9 Operation and maintenance
      Introduction
      Operation
      Noncondensing turbine operation of a multistage
       condensing turbine
      Typical starting sequence for a steam turbine
       generator set
      Maintenance
      Internal water washing
      Steam purity
10 Inquiry guide
Appendix

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.

DocumentType
Standard
PublisherName
National Electrical Manufacturers Association
Status
Withdrawn

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