Terms that have a specific meaning in VLF testing are defined, and VLF test equipment and wave shape are described. A uniform procedure for testing the armature insulation of large AC machines with VLF voltage is provided. Constants for relating VLF tests to power-frequency and direct-voltage tests to obtain equally effective test levels are recommended.
- Standard Committee
- PE/EM - Electric Machinery
- Status
- Inactive-Withdrawn Standard
- Superseded by
- 433-2009
- Board Approval
- 1973-12-13
- History
-
- Withdrawn:
- 2004-01-16
- ANSI Approved:
- 1992-05-06
- Published:
- 1974-12-18
- Reaffirmed:
- 1991-09-26
Working Group Details
- Society
- IEEE Power and Energy Society
- Standard Committee
- PE/EM - Electric Machinery
Other Activities From This Working Group
Current projects that have been authorized by the IEEE SA Standards Board to develop a standard.
No Active Projects
Standards approved by the IEEE SA Standards Board that are within the 10-year lifecycle.
No Active Standards
These standards have been replaced with a revised version of the standard, or by a compilation of the original active standard and all its existing amendments, corrigenda, and errata.
No Superseded Standards
These standards have been removed from active status through a ballot where the standard is made inactive as a consensus decision of a balloting group.
No Inactive-Withdrawn Standards
These standards are removed from active status through an administrative process for standards that have not undergone a revision process within 10 years.
433-2009
IEEE Recommended Practice for Insulation Testing of AC Electric Machinery with High Voltage at Very Low Frequency
This recommended practice describes very low frequency withstand and diagnostic tests that are performed on the stator windings of ac electric machines.