IEEE Std C37.081a-1997 标准pdf

2008-8-12 00:17:04 3139

0 PS810 pdf datasheet The contents of this supplement will be incorporated into IEEE Std C37.081 in a future edition. At that time figures and tables will be labeled sequentially. This supplement is intended to be used in conjunction with IEEE Std C37.081- 1981. Editing instructions necessary to incorporate this supplement into IEEE Std C37.081 are provided in bold italics. 8.3.2 Recovery voltage for terminal faults; asymmetrical short-circuit current Replace subclause 8.3.2 with the following: The transient recovery voltage rate R and peak E2, together with the di/dt of the current at current zero for asymmetrical faults needs to be modified in accordance with the degree of asymmetry of the fault current. The normal power frequency recovery voltage is sinusoidal with a value equal to that of the symmetrical fault current case. The basis of rating for asymmetrical faults is a fully offset current with a decrement based on an X/R of 17. The total current dc component and voltage are shown in Figure 8.3.2-1 for this condition. From this it can be seen that current zeros occur at the times shown in Table 8.3.2-1 with the corresponding degree of asymmetry D. 0 本帖子中包含更多资源您需要登录才可以下载或查看，没有帐号？注册 x
2008-8-12 00:17:04　　评论淘帖0 举报相关推荐 • IEEE Std C37.081a-1997 21 • IEEE Std 1110-2002标准pdf 4297 • IEEE Std 1226.3-1998标准pdf 3899 • ANSI/IEEE C37.081-1981 pdf 15 • IEEE Std 1226.6-1996标准pdf 3003 • IEEE Std 802.15.4-2003.pdf 标准 185 • IEEE STD C57.12.59-2001标准 27 • IEEE Std C37.09-1999标准 12 • IEEE Std C37.09a-2005标准下载 11 • ieee std c37.2-1996标准 61