1、14 October 2011 STD97020IEEE Std C37.122-2010(Revision ofIEEE Std C37.122-1993)Errata to IEEE Standard fo High Voltage Gas-Insulated Substations RatedAbove 52 kVSponsorSubstations and Switchgear Committeeof theIEEE Power & Energy SocietyCorrection SheetIssued 14 October 2011Copyright 2011 by the Ins
2、titute of Electrical and Electronics Engineers, Inc. All rights reserved. Published 2011.Printed in the United States of America.This correction sheet may be freely reproduced and distributed in order to maintain the utility and currency of theunderlying Standard. This correction sheet may not be so
3、ld, licensed or otherwise distributed for any commercialpurposes whatsoever. The content of this correction sheet may not be modified. Correction Sheet to IEEE Std C37.122-201014 October 2011 STD97020Page 46, 6.18.3, subclause title should be corrected to read as follows:Switching bus charging curre
4、nts test proceduresSee Annex APage 46, 6.18.4 Bus charging currents, Table 9 should be corrected to read as follows:Table 9Specified bus charging currentPage 72, A.4.3, the S at the end of the second sentence in item b) should be deleted to read as follows:b) The force (Fm) or the torque (Tm) transm
5、itted by the strain limiting device is measuredupstream of the opening point while attempting to operate the switching device, either by actuatingthe power operated mechanism or by hand, until the strain limiting device operates. The operatingmechanism is supplied with 110% of its rated supply volta
6、ge or rated supply pressure or, in the case ofa manual operating mechanism, a force up to the operation of the strain limiting device with amaximum of 750 N is applied halfway along the length of the gripping part of the operating handle ofthe operating mechanism.Rated voltage 72.5 100 123 145 170 245 300 362 420 550 800 (kV rms)Bus charging current0.1 0.1 0.1 0.1 0.1 0.25 0.25 0.5 0.5 0.5 0.8 (A rms)NOTE: The values are normally not exceeded in practice. rU
