Table of Contents

FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
4 General
  4.1 General rules
  4.2 Rated conditions
  4.3 Rated voltage
  4.4 Power factor
  4.5 Rated speed
  4.6 Ranges of voltage and frequency
  4.7 Direction of rotation
  4.8 Stator winding
  4.9 Generator rated field current and voltage
  4.10 Winding insulation
       4.10.1 Thermal class
       4.10.2 Withstand voltage tests
  4.11 Insulation against shaft current
  4.12 Over-speed test
  4.13 Critical speeds
  4.14 P-Q capability diagram
  4.15 Overcurrent requirements
  4.16 Sudden short circuit
  4.17 Short-circuit ratio
  4.18 Direct axis transient and subtransient reactances for
       generators
  4.19 Tolerances on short-circuit ratio and direct axis
       transient and subtransient reactances
  4.20 Mechanical conditions for rotors
       4.20.1 Number of starts
       4.20.2 Turning gear operation
  4.21 Coolers
5 Air-cooled generators
  5.1 General
  5.2 Generator cooling
  5.3 Temperature of primary coolant
       5.3.1 Temperature detectors
6 Hydrogen-cooled or liquid-cooled generators
  6.1 General
  6.2 Hydrogen pressure and purity in the casing
  6.3 Generator housing and cover plates
  6.4 Stator winding terminals
  6.5 Temperature of primary coolants, temperatures and
       temperature rises of the generator
  6.6 Temperature detectors
  6.7 Auxiliary system
7 Generators for combustion gas turbines or combined
  cycle applications
  7.1 General
  7.2 Service conditions
       7.2.1 General
       7.2.2 Primary coolant temperature
       7.2.3 Number of starts
       7.2.4 Application of load
  7.3 Rated output
  7.4 Capabilities
       7.4.1 General
       7.4.2 Base capability
       7.4.3 Temperature rise and temperature at base
              capability
       7.4.4 Peak capability
  7.5 Rating plate
  7.6 Temperature tests
Annex A (normative) Precautions to be taken when using
        hydrogen cooled turbine-driven synchronous
        generators
Bibliography

Abstract

Applicable to three-phase synchronous generators, having rated outputs of 10 MVA and above driven by steam turbines or combustion gas turbines.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	International Electrotechnical Committee
Pages
ISBN
Committee	TC 2
Supersedes	IEC 60842 : 1.0