IEEE C57.12.00-2006.pdf
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1、IEEE Std C57.12.00-2006 (Revision of IEEE Std C57.12.00-2000) IEEE Standard for Standard General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers I E E E 3 Park Avenue New York, NY 10016-5997, USA 28 February 2007 IEEE Power Engineering Society Sponsored by the Trans
2、formers Committee IEEE Std C57.12.00-2006 (Revision of IEEE Std C57.12.00-2000) IEEE Standard for Standard General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers Sponsor Transformers Committee of the IEEE Power Engineering Society Approved 15 September 2006 IEEE-SA
3、 Standards Board ii Copyright 2007 IEEE. All rights reserved. Abstract: Electrical, mechanical, and safety requirements are set forth for liquid-immersed distribution and power transformers, and autotransformers and regulating transformers; single and polyphase, with voltages of 601 V or higher in t
4、he highest voltage winding. This standard is a basis for the establishment of performance, limited electrical and mechanical interchangeability, and safety requirements of equipment described; and for assistance in the proper selection of such equipment. The requirements in this standard apply to al
5、l liquid-immersed distribution, power, and regulating transformers except the following: instrument transformers, step-voltage and induction voltage regulators, arc furnace transformers, rectifier transformers, specialty transformers, grounding transformers, mobile transformers, and mine transformer
6、s. Keywords: autotransformers, distribution transformers, electrical requirements, mechanical requirements, power transformers, regulating transformers, safety requirements _ The Institute of Electrical and Electronics Engineers, Inc. 3 Park Avenue, New York, NY 10016-5997, USA Copyright 2007 by the
7、 Institute of Electrical and Electronics Engineers, Inc. All rights reserved. Published 28 February 2007. Printed in the United States of America. IEEE is a registered trademark in the U.S. Patent +1 978 750 8400. Permission to photocopy portions of any individual standard for educational classroom
8、use can also be obtained through the Copyright Clearance Center. iv Copyright 2007 IEEE. All rights reserved. Introduction This introduction is not part of IEEE Std C57.12.00-2006, IEEE Standard for Standard General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers. T
9、his standard is a voluntary consensus standard. Its use may become mandatory only when required by a duly constituted legal authority, or when specified in a contractual agreement. To meet specialized needs and to allow for innovation, specific changes are permissible when mutually determined by the
10、 user and the manufacturer, provided these changes do not violate existing laws and are considered technically adequate for the function intended. When this standard is used on a mandatory basis, the words shall and must indicate mandatory requirements. The words should and may refer to matters that
11、 are recommended or permissive, but not mandatory. When applicable, editorial changes have been incorporated into this revision. Sentence structure and punctuation has been edited to improve clarity and conciseness. Also, editorial changes have been made to conform to the IEEE Standards Style Manual
12、. Some changes have also been made to correct errors in previous revisions. When applicable, references to other standards have been updated. Changes of major importance to the revision of this standard are listed in sequential order and reference by their clause number or table number: In Clause 2,
13、 the designation and title for IEEE Std C57.131-1995 has been corrected. IEEE Std C62.1- 1989 (Reaff 1994) and IEEE Std C62.2-1987 (Reaff 1994) have been removed. Also, ANSI C92.2-1987 has been added.a In 4.3.3, item g) has been revised to read: “Unusual duty or frequency of operation, or high curre
14、nt short duration loading.” In 5.1, the word “power” has been replaced with “kVA” in the paragraph preceding the examples. In 5.10.3.1, IEEE Std C62.11-1999 B46 has been added as surge arrester information.b In Table 2, row 5 has been revised from ONAN/ODAF to ONAN/OFAF, and previous designation is
15、revised to OA/FOA without reference to footnote a). In 5.4.2, the entire second paragraph has been removed after a lengthy debate by the PCS working group. The position of the working group is that this information belongs in product-specific standards and not in standard for general requirements. I
16、n 5.5.3, words referring to the capacity of taps for windings with load tap-changing equipment have been revised. In Table 5, 250 kV BIL (corresponding to 69 kV nominal system voltage) has been added. In 5.11.1, the determination of maximum (hottest spot) temperature rise by calculation or testing w
17、as added. Prior editions of this standard required the hottest spot temperature rise not to exceed 80 oC. However, there was no approved test or calculation method for this required performance parameter. Many transformer users rely on this parameter for loading calculations. Therefore, an IEEE task
18、 force was a Additional information on references can be found in Clause 2. b Numbers in brackets refer to sources in the bibliography found in Annex A. -,-,- v Copyright 2007 IEEE. All rights reserved. formed to propose a revision of 5.11.1.1. Fiber optic temperature sensors now permit direct measu
19、rement of specific points. Prior winding analysis permits sensor placement for reading maximum winding temperature. Also, modern computer technology permits heat transfer programs to calculate the temperature distribution within transformer windings. At the time this revision was approved, an IEEE w
20、orking group had developed IEEE Std 1538 B15, IEEE Guide for Determination of Maximum Winding Temperature Rise in Liquid Filled Transformer. This guide provides additional guidance for compliance with 5.11.1.1. Subclause 5.12 of this standard recognizes the use of metric and/or empirical units for d
21、ata appearing on transformer nameplates. In this revision of IEEE Std C57.12.00, all units of dimension, volume, weight, and pressure are listed in metric and empirical (U.S. customary) units. Subclause 5.12.1 has been modified to accommodate either system of units for nameplate information. Numerou
22、s equations throughout this standard have also been revised to reflect the use of metric and empirical units. In 5.12.1, the requirement for an LTC nameplate per IEEE Std C57.131 has been added. In Table 10, dual system of units for weight or mass has been incorporated. Additional text preceding the
23、 table was added to clarify the intent of allowing either SI system of units (metric) or the U.S. customary units (in, lbs) on the nameplate, but does not require both. Additional editorial changes have been made to the entire table for greater clarity. The requirement for “location (country)” has b
24、een added to “name of manufacturer”. Also in Table 10, changes have been made to the table notes. The changes are as follows: Note 1, the minimum height requirement for engraved letters and numerals (denoting kVA, serial number, and voltage ratings) has been changed to 4.00 mm (0.157 in). Note 9, th
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