IEEE 421 : 1986
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
EXCITATION SYSTEMS FOR SYNCHRONOUS MACHINES, DEFINITIONS FOR
01-01-1986
12-01-2013
Evaluates dynamic performance of excitation control systems applied by electric utilities. Covers closed loop performance for small and large signal disturbances. Describes high potential testing of complete excitation systems and components for synchronous machines. Includes auxiliary devices exposed to excitation system stresses, e.g. temperature indicators, transducers, meters, etc.
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