1、30 March 2009 SH95182IEEE Std C37.40-2003(R2009)(Revision ofIEEE Std C37.40-1993)Errata to IEEE Standard Service Conditions andDefinitions for High-Voltage Fuses,Distribution Enclosed Single-Pole Air Switches, and AccessoriesSponsorSwitchgear Committeeof theIEEE Power Engineering SocietyCorrection S
2、heetIssued 30 March 2009Copyright 2009 by the Institute of Electrical and Electronics Engineers, Inc. All rights reserved.Published 2009. Printed in the United States of America.This correction sheet may be freely reproduced and distributed in order to maintain the utility and currencyof the underly
3、ing Standard. This correction sheet may not be sold, licensed or otherwise distributed for anycommercial purposes whatsoever. The content of this correction sheet may not be modified. Thisinformation has been incorporated into the second printing of IEEE Std C37.40-2003.Correction Sheet to IEEE Std
4、C37.40-2003SH95182 30 March 2009Page 5, Table 1Limits of temperature and temperature rise for components and materials where the ratedmaximum application temperature for the device is 40 C or less, should be replaced with the following:Table 1Limits of temperature and temperature rise for components
5、 and materials where the rated maximum application temperature for the device is 40 C or lessComponent or materiala,baIf the manufacturer uses coatings other than those indicated in this table, the properties of these materials should betaken into consideration.bWhere engaging contact surfaces have
6、different coatings, the permissible temperatures and temperature rises shall bethose of the component having the lowest values permitted.Maximum value ofTemperature CTemperature rise Ca) Contacts in air or other insulating gasses1) Spring-loaded contacts (copper or copper alloy) Bare Tin coated Silv
7、er or nickel coated Other coatingsa2) Bolted contacts or equivalent (copper, copper alloy and aluminum alloy) Bare Tin coated Silver or nickel coated Other coatingsa759510590105115355565506575b) Contacts in liquid insulating material (copper or copper alloy)1) Spring-loaded contacts Bare Silver, tin
8、 or nickel coated Other coatingsa2) Bolted contacts Bare Silver, tin, or nickel coated Other coatingsa80908010040504060c) Bolted terminals in airc Bare Silver, tin, or nickel coated Other coatingsacThe temperature of a terminal should be no higher than that of the nearest device contact also subjec
9、t to temperaturelimits covered by this table.901055065d) Metal parts acting as springsddThe temperature or the temperature rise should not reach such a value that the elasticity of the metal is impaired.e) Materials used as insulation and metal parts in contact with insulation of following classes:Bone fiber 90 105130 155 180 220 Over 220eeLimited only by the requirement not to cause any damage to surrounding parts.709010513015518022030506590115140180
