Standard Requirements, Terminology, and Test Code for Shunt Reactors Rated Over 500 kVA
|Publication Date:||27 March 2008|
(This Foreword is not a part of IEEE C57.21-1990, IEEE Standard Requirements, Terminology, and Test Code for Shun Reactors Rated Over 500 kVA.)
The Standard Requirements, Terminology, and Test Code for Shunt Reactors Rated Over 501 kVA, C57.21, was first issued as a separate standard in 1971. The next revision was completed in 1981. The present revision was started in 1980 by the Standards Subcommittee, chaired by Leonard R. Smith, approved by the C57 Subcommittee in 1981, and completed within the IEEE Transformer Committee. This included work on the dielectric tests by the Task Force on Revisions of Dielectric Tests of Shunt Reactors, chaired by W. N. Kennedy, and the Task Force on Dry-Type Reactors chaired by R. F. Dudley. The work was correlated by the Working Group on Shunt Reactors, chaired by J. W. McGill, which reports to the Performance Characteristics Subcommittee.
The present standard represents the agreement of those involved in reactor design, construction testing, and usage based on the present state-of-the-art for shunt reactors.
This standard applies to all oil-immersed or dry-type, single-phase or three-phase, outdoor or indoor shunt reactors rated over 500 kVA.
This standard does not apply to other devices such as
1) Shunt reactors, 500 kVA and smaller
2) Current-limiting reactors (see ANSI C57.16-1958 1)
3) Arc-suppression coils
4) Neutral-grounding devices (see IEEE Std 32-1972 )
5) Saturable reactors
6) Line-resonant reactors
7) Filter reactors