Instruction for the testing of distribution transformers as sources of voice-frequency noise for communication circuits is provided. The tests measure the degree to which a transformer may contribute to electrical noise in communication circuits that are physically paralleling the power-supply circuits feeding the transformer. They provide a standard method for use by the transformer manufacturer, user, and others in the industry for the purpose of better evaluating the design choices that are available and moving toward industry objectives with regard to levels of harmonic exciting current.
- Sponsor Committee
- COM/TRANS - Transmission Systems
- Status
- Inactive-Withdrawn Standard
- Superseding
- 469-1977
- Board Approval
- 1988-06-09
- History
-
- Withdrawn:
- 2000-03-06
- ANSI Approved:
- 1988-09-26
- Published:
- 1988-12-29
- Reaffirmed:
- 1994-03-17
Working Group Details
- Society
- IEEE Communications Society
Learn More - Sponsor Committee
- COM/TRANS - Transmission Systems
No Active Projects
No Active Standards
No Superseded Standards
No Inactive-Withdrawn Standards
No Inactive-Reserved Standards