IEEE C50.13:2005 pdf download.IEEE Standard for Cylindrical-Rotor 50 Hz and 60 Hz Synchronous Generators Rated 10 MVA and Above.
The requirements in this standard apply to all 50 Hz and 60 Hz, two-pole and four-pole, cylindrical-rotor synchronous generators driven by steam turbines and/or by combustion gas turbines. The drive may be direct or through a gearbox or other device that permits different speeds for the turbine and the generator.
The generators covered by this standard are to have rated outputs of 10 MVA and above. Cylindrical-rotor, two-pole and four-pole generators below this rating are generally covered by NEMA MG 1-2003 [B 18].
2. Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments or corrigenda) applies.
IEEE Std , IEEE Recommended Practice—General Principles for Temperature Limits in the Rating of Electrical Equipment and for the Evaluation of Electrical Insulation.2’3
IEEE Std , IEEE Standard Techniques fbr High-Voltage Testing.
IEEE Std , IEEE Recommended Practice for Testing Insulation Resistance of Rotating Machinery.
IEEE Std , IEEE Guide for Operation and Maintenance of Turbine Generators.
IEEE Std , IEEE Recommended Practice for Insulation Testing of AC Electric Machinery (2300 V and above) with High Direct Voltage.
IEEE Std , IEEE Guide: Test Procedures for Synchronous Machines, Part 1—Acceptance and Performance Testing. Part Il—Test Procedures and Parameter Determination for Dynamic Analysis.
ISO 3746, Acoustics—Determination of’ Sound Power Levels of Noise Sources Using Sound Pressure- Survey Method Using an Enveloping Measurement Surface over a Reflecting Plane.4
ISO 7919-2, Mechanical Vibration of Non-Reciprocating Machines—Measurements on Rotating Shafts and Evaluation Criteria—Part 2: Large Land-Based Steam Turbine Generator Sets.
ISO 7919-4, Mechanical Vibration of Non-Reciprocating Machines—Measurements on Rotating Shafts and Evaluation Criteria—Part 4: Gas Turbine Sets.
3. Definitions
For the purposes of this standard, the following terms and definitions apply. The Authoritative Dictionary of IEEE Standard Terms [B 10] should be referenced for terms not defined in this clause.
Cooling classification
3.1 directly cooled windings: A direct cooled stator or rotor winding is one in which the primary coolant (air, hydrogen. or liquid) flows in direct contact with the conductors so that the heat generated within the principal portion of the winding reaches the primary coolant without flowing through the major ground insulation.
32 indirectly cooled windings: An indirect cooled stator or rotor winding is one in which the heat generated within the principal portion of the winding must flow through the major ground insulation before reaching the primary coolant (air or hydrogen).
Coolant types
3.3 primary coolant: A medium, liquid or gas. that, being at a lower temperature than a part of a machine and in contact with it, removes heat from that part.
3.4 secondary coolant: A medium, liquid or gas, that, being at a lower temperature than the primary coolant, removes heat given up by the primary coolant by means of a heat exchanger or through the external surface of the machine.IEEE C50.13 pdf download.