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IEEE 421B-1979
Scope
This standard applies to high-potential testing of complete excitation systems and their components for synchronous machines. The components of the excitation system are described in IEEE Std 421-1972@ Criteria and Definitions for Excitation Systems for Synchronous Machines. Also included are auxiliary devices that are exposed to excitation system stresses. Examples of such auxiliary devices are temperature indicators@ transducers@ meters@ etc. This standard does not cover the synchronous- machine field winding or field circuit breaker and discharge resistor. This standard supplements existing standards for components used on excitation systems: ANSI C19.3-1973@ Industrial Control Apparatus - General; ANSI C19.4-1973@ Industrial Control Apparatus - Enclosures; ANSI C19.5-1973@ Industrial Control Apparatus - Switching or Controlling Devices; ANSI C19.6-1973@ Industrial Control Apparatus - Control-Circuit Devices and Assemblies; ANSI C19.7-1973@ Industrial Control Apparatus - Controllers and Controller Assemblies; ANSI C34.2-1968 (R1973)@ Practices and Requirements for Semiconductor Power Rectifiers; ANSI C37.18-1968 (R1975)@ Requirements for Field Discharge Circuit Breakers for Rotating Electric Machinery; ANSI/IEEE C57.12.00-197 3@ General Requirements for Distribution@ Power@ and Regulating Transformers; ANSI/IEEE C57.12.90-1973@ Test Code for Distribution@ Power@ and Regulating Transformers; and NEMA ICs1970 (R1975)@ Industrial Controls and Systems.
IEEE 421B-1979 history
1979IEEE 421B-1979 High-Potential-Test Requirements for Excitation Systems for Synchronous Machines