IEC 60990:2016 触摸电流和保护导体电流测量方法
标准编号：IEC 60990:2016
中文名称：触摸电流和保护导体电流测量方法
英文名称：Methods of measurement of touch current and protective conductor current
发布日期：2016-05-30
标准范围
IEC 60990:2016可作为IEC 60990:2016获得包含国际标准及其红线的RLV版本，显示技术内容与上一版。IEC 60990:2016定义了直流测量方法。或者交流电。可以流过人体的正弦或非正弦波形电流，以及流过保护导体的电流。推荐的触摸电流测量方法基于流经人体的电流的可能影响。在本标准中，通过表示人体阻抗的网络的电流的测量被称为触摸电流的测量。这些网络不一定对动物的身体有效。具体限值的规定或含义不在本标准范围内。IEC TS 60479系列提供了关于通过人体的电流的影响的信息，可以从中得出极限值。根据IEC 61140，本标准适用于所有类别的设备。本标准中的测量方法不适用于持续时间小于1秒的触摸电流，即IEC 60601-1，交流中定义的患者电流。频率低于15 Hz，电流高于电燃烧极限。这第三版取消并取代了1999年出版的第二版。它构成技术修订。本版与第二版相比，主要变化如下:-效果名称已更新，以反映对效果范围的理解增加，并与目前的用法一致；-基于对该效果的当前理解，在应用要求时已经减少了调用可抓握部件的使用条件；-对ISO 10012-1的引用，已被相同编号的管理标准所取代，在需要时已被解释性文本所取代，以保持文件的含义；-原资料性附件H（可抓握部分）已从本次更新中删除，因为其不能正确代表可能发生固定的全部条件。增加了一个新的信息性附录H（频率滤波接触电流电路测量分析），并更新了参考书目（以前的附录M），以确保完整性。本基本安全出版物主要供技术委员会根据IEC指南104和ISO/IEC指南51中规定的原则编写标准时使用。它不适合独立于产品标准的制造商或认证机构使用。关键词:触摸电流保护导体电流电流流动
IEC 60990:2016 is available as
IEC 60990:2016 defines measurement methods for d.c. or a.c. current of sinusoidal or non-sinusoidal waveform, which could flow through the human body, and current flowing through a protective conductor.The measuring methods recommended for TOUCH CURRENT are based upon the possible effects of current flowing through a human body. In this standard, measurements of current through networks representing the impedance of the human body are referred to as measurements of TOUCH CURRENT. These networks are not necessarily valid for the bodies of animals. The specification or implication of specific limit values is not within the scope of this standard. IEC TS 60479 series provides information regarding the effects of current passing through the human body from which limit values may be derived. This standard is applicable to all classes of EQUIPMENT, according to IEC 61140. The methods of measurement in this standard are not intended to be used for TOUCH CURRENTS having less than 1 s duration, patient currents as defined in IEC 60601-1, a.c. at frequencies below 15 Hz, and currents above those chosen for ELECTRIC BURN limits. This third edition cancels and replaces the second edition published in 1999. It constitutes a technical revision. The principal changes in this edition as compared with the second edition are as follows:
- the effects names have been updated to reflect increased understanding of the range of effects and is in concert with present usage;
- the conditions of use invoking a GRIPPABLE PART have been reduced in the application of the requirements based upon the current understanding of this effect;
- the references to ISO 10012-1, which has been replaced by management standard of the same number, have been replaced with explanatory text, where needed to maintain the sense of the document;
- former informative Annex H (GRIPPABLE PART) has been deleted from this update as it does not properly represent the full set of conditions under which immobilization can occur. A new informative Annex H (Analysis of frequency filtered touch current circuits measurement) has been added and the Bibliography (formerly Annex M) has been updated with additional references for completeness. This basic safety publication is primarily intended for use by technical committees in the preparation of standards in accordance with the principles laid down in IEC Guide 104 and ISO/IEC Guide 51. It is not intended for use by manufacturers or certification bodies independent of product standards.Key words: Touch Current, Protective Conductor Current, Current Flow
标准预览图
