,2.0版本:电子设备机械结构的IEC 60917和60297标准测试.第2部分:箱柜和支架的抗震测试

[中文适用范围]： IEC 61587 的这一部分规定了适用于 IEC 60917 和 60297 系列的机柜和机架的抗震测试。它全部或部分仅适用于根据上述系列标准@的电子设备机柜和机架的机械结构，而不适用于被视为安装在这些机械结构内的电子设备或系统。本标准不适用于具有外部或内部抗震隔离结构的机柜或机架。本标准旨在提供测试条件和标准，为评估机柜或机架的机械结构可接受的承受规定地震烈度的能力提供参考。为此目的@本标准规定了测试样本条件@如机柜和机架的尺寸（即高度@宽度和深度）@负载分布@结构测试条件以及单轴或三轴加速度的RRS（所需响应谱）作为地震试验波条件。单轴或三轴加速度可选择。 [外文原描述]： IEC 61587-2:2011 specifies seismic tests for cabinets and racks accommodated with IEC 60917 and 60297 series. It applies, in whole or in part, only to the mechanical structures of cabinets and racks for electronic equipment according to the above cited series of standards, while it does not apply to the electronic equipment or systems deemed to be installed within these mechanical structures. This standard does not apply either to a cabinet or a rack having an anti-seismic isolation structure, either external or internal. This standard aims to provide test conditions and criteria that constitute a reference to evaluate the ability of the mechanical structure of the cabinets or racks to acceptably withstand specified seismic intensities. For this purpose, this standard specifies test specimen conditions, such as dimensions (i.e. height, width and depth) of the cabinet and the rack, load distribution, structural test condition and the RRS (required response spectra) of single-axis or tri-axis acceleration as the seismic test wave condition. The single-axis or tri-axis acceleration is selectable. The second edition of this standard replaces the first edition published in 2000 and constitutes a technical revision. The main technical changes with regard to the previous edition are as follows: Edition 1.0 specified the test condition with one size of the cabinet, and one load distribution. The specified acceleration condition for the test specimen was single-axis and one of the RRS (required response spectra) specified in the standard was selected. The test was aimed to obtain the reference for the structural strength of the enclosure against the specified seismic intensity. Earthquakes are actually random phenomena that are much more carefully simulated by tri-axial simultaneous operation. The demand of tri-axial excitation has emerged as a more accurate representation of an earthquake.