1 Overview
1.1 Scope
1.2 Purpose
1.3 Disclaimer
1.4 Use of IEEE Std 125
2 Normative references
3 Definitions
4 Functions and characteristics
4.1 Control actuator position
4.2 Control actuator stroke
4.3 Control actuator time
5 Equipment specifications
5.1 General specifications
5.2 Governor and auxiliary functions
5.3 Other optional functions
5.4 Hydraulic pressure supply system
5.5 New installation considerations
5.6 Replacement and conversion considerations
5.7 Redundancy
5.8 Failsafe features
5.9 Dual-regulated turbines
5.10 Additional governor controller functions
5.11 Environmental specifications
5.12 Software
5.13 Interface to other plant systems
5.14 Operator Interface
5.15 Personnel safety features
5.16 Spare parts and accessories
5.17 Service Life
6 Performance specification
6.1 Stability
6.2 Permanent speed droop
6.3 Deadband
6.4 Deadtime
6.5 Governor damping adjustments
7 Information provided by the manufacturer
7.1 Information to be provided at the time of submission
of proposals
7.2 Information to be provided after contract award
7.3 Test procedures
7.4 Rehabilitation and conversion considerations
8 Governor testing
8.1 Factory acceptance testing
8.2 On-site acceptance testing
9 Information provided by the specifier
Annex A (informative) Bibliography
Annex B (informative) Glossary
Annex C (normative) Mode control logic
C.1 Droop mode control logic
C.2 Governor mode control logic
Annex D (normative) Tables