1、IEEE Standards Interpretations for IEEE Std C57.19.01 -2000IEEE Standard Performance Characteristics and Dimensions for Outdoor Apparatus Bushings Copyright 2010 by the Institute of Electrical and Electronics Engineers, Inc. Three Park Avenue New York, New York 10016-5997 USA All Rights Reserved. Th
2、is is an interpretation of IEEE Std C57.19.01-2000. Interpretations are issued to explain and clarify the intent of a standard and are not intended to constitute an alteration to the original standard or to supply consulting information. Permission is hereby granted to download and print one copy of
3、 this document. Individuals seeking permission to reproduce and/or distribute this document in its entirety or portions of this document must contact the IEEE Standards Department for the appropriate license. Use of the information contained in this document is at your own risk. IEEE Standards Depar
4、tment Copyrights and Permissions 445 Hoes Lane, P. O. Box 1331 Piscataway, New Jersey 08855-1331, USA August 2010 Interpretation Request #1 Topic: C1 or C power factor Clause, Subclause, Annex, Figure, or Table: Table 6 IEEE Std C57.19.00-2004 establishes in 7.4.2 regarding power factor tests: “Limi
5、ts and tolerance of acceptable change are specified in Table 6 of IEEE Std C57.19.01.” Table 6 specifies limits for C1 or C power factor for different types of construction - the interpretation request is about the 0.5% power factor limit for Oil-impregnated, paper insulated type. Does this limit (a
6、nd table) apply for new equipment only? Apparently, there is a conflict with IEEE Std 62-1995, which recommends in 6.2.4: “In practice, if the power factor of capacitance-graded bushings exceeds 1%, the user should seek further specialized help.” Such statement Page 1 of 2IEEE Std C57.19.01-20008/23
7、/2010file:/A:AcquisitionIEEE Errata, IEEE Intp & NESC Intp08232010C57_19_01-2000_In.implies that values of power factor below 1% are, at least, acceptable. Doesnt it?Interpretation Response #1 IEEE bushing standards - IEEE Std C57.19.00-2004 and IEEE Std C57.19.01-2000 - apply to new bushings. Other
8、 standards such as IEEE Std C57.19.100-1995 and IEEE Std 62-1995 contain information addressing testing of in-service bushings and interpretation of the test results. . Back to Available IEEE Standards Interpretations Online Copyright IEEE-SA Contact IEEE-SA For questions or comments, please contact the IEEE-SA Webmaster. Page 2 of 2IEEE Std C57.19.01-20008/23/2010file:/A:AcquisitionIEEE Errata, IEEE Intp & NESC Intp08232010C57_19_01-2000_In.
