IEC 60477-1:2022 实验室电阻器第1部分:实验室直流电阻器

标准编号：IEC 60477-1:2022

中文名称：实验室电阻器第1部分:实验室直流电阻器

英文名称：Laboratory resistors - Part 1: Laboratory DC resistors

发布日期：2022-03-30

标准范围

IEC 60477-1:20 22适用于预期用作实验室DC电阻器的电阻器（以下称为“电阻器”），包括标准电阻器、精度等级为0,000 05至10的单个或多个电阻器以及精度等级为0,000 5至10的单个或多个刻度盘电阻器。本文件不适用于:1)仅用作永久安装电路元件的电阻器，2）用在交流电或脉冲电流上的电阻器，3）有源电阻器，4）在相关IEC文件中被视为电气测量仪器附件的串联电阻器和分流器（示例如下）。IEC 60477-1:20 22取消并取代1974年发布的第一版IEC 60477及其修正案1:19 97。本版构成技术修订版。与上一版相比，此版本包括以下重大技术变更:a)扩展电阻器精度等级；b)删除了以百万分率(ppm)表示的电阻器精度等级；c)将有源电阻器排除在本文件的范围之外；d)根据新的IEC 60050系列更新了术语和定义；e)将术语“电阻十进制”更改为“电阻刻度盘”，以覆盖具有其他电阻阶跃值的多刻度盘电阻器；f)根据IEC 60359将固有误差更新为固有不确定性；g)增加了0.0005至0.01类电阻器的相对稳定性限值；h)增加了高压电阻器的要求；i)根据新的IEC 61010系列更新了安全符号和要求；j)更新了电阻器的绝缘电阻要求；k)增加了温度系数的要求；l）更新了电阻器运输和储存的温度要求。

IEC 60477-1:2022 applies to resistors intended for use as laboratory DC resistors (hereinafter referred to as "resistors") comprising standard resistors, single or multiple resistors of accuracy Classes 0,000 05 to 10 and single or multi-dial resistors of accuracy Classes 0,000 5 to 10.
This document does not apply to:
1) resistors which are intended for use solely as permanently mounted circuit components,
2) resistors used on alternating current or on pulsed current,
3) active resistors,
4) series resistors and shunts which are considered as accessories of electrical measuring instruments in the relevant IEC document (examples of these are as follows).
IEC 60477-1:2022 cancels and replaces the first edition of IEC 60477 published in 1974, and its Amendment 1:1997. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) extended the resistor accuracy classes;
b) deleted the resistor accuracy class expression in parts per million (ppm);
c) excluded the active resistor from the scope of this document;
d) updated the terms and definitions according to new IEC 60050 series;
e) changed the term "resistance decade" to "resistance dial" to cover the multi-dial resistors with other resistance step values;
f) updated the intrinsic error to intrinsic uncertainty according to IEC 60359;
g) added the limits of relative stability for resistors of classes 0,000 05 to 0,01;
h) added the requirements of high voltage resistors;
i) updated the safety symbols and requirements according to the new IEC 61010 series;
j) updated the insulation resistance requirements of resistors;
k) added the requirements of temperature coefficient;
l) updated the temperature requirements for transport and storage of resistors.

标准预览图