IEC 60045-1-2020 Steam turbines – Part 1: Specifications.
This part of IEC 60045 is applicable primarily to land-based horizontal steam turbines driving generators for electrical power services. Some of its provisions are relevant to turbines for other applications. Generator, gear box and other auxiliaries which are considered as a part of the system are also mentioned in this document. Detailed specifications for this equipment are not included in this document.
The purpose of this document is to make an intending purchaser aware of options and alternatives which it may wish to consider, and to enable it to state its technical requirements clearly to potential suppliers. Consequently, final technical requirements will be in accordance with an agreement between the purchaser and the supplier in the contract.
2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document.
For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 60034-3, Rotating electrical machines – Part 3: Specific requirements for synchronous generators driven by steam turbines or combustion gas turbines
IEC 60079 (all parts), Explosive atmospheres IEC 60204-1 , Safety of machinery – Electrical equipment of machines – Part 1: General requirements
IEC 60953 (all parts), Rules for steam turbine thermal acceptance tests IEC 61 000-6-2, Electromagnetic compatibility (EMC) – Part 6-2: Generic standards – Immunity standard for industrial environments
IEC 61 000-6-4, Electromagnetic compatibility (EMC) – Part 6-4: Generic standards – Emission standard for industrial environments
IEC 61 064, Acceptance tests for steam turbine speed control systems ISO 1 940, Mechanical vibration – Balance quality requirements for rotors in a constant (rigid) state ISO 791 9-3, Mechanical vibration – Evaluation of mechanical vibration by measurements on rotating shafts – Part 3: Coupled industrial machines ISO 1 0494, Turbines and turbine sets – Measurement of emitted airborne noise – Engineering/survey method
3 Terms and definitions For the purposes of this document, the following terms and definitions apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at
• ISO Online browsing platform: available at
3.1 Turbine types
3.1.1 high-pressure turbine HP turbine turbine as classified by manufacturers with high pressure level of steam admission
3.1.2 intermediate-pressure turbine IP turbine turbine as classified by manufacturers with intermediate pressure level of steam admission
3.1.3 low-pressure turbine LP turbine turbine as classified by manufacturers with low pressure level of steam admission
3.1.4 superheat turbine turbine whose initial steam is significantly superheated
3.1.5 wet-steam turbine saturated-steam turbine turbine whose initial steam is saturated or nearly so。IEC 60045-1 pdf download.