直接作用指示模拟电测量仪器及其附件 第2部分：电流表和电压表的特殊要求

[中文适用范围]： IEC 60051 的这一部分适用于具有模拟显示器的直接作用指示电流表和电压表。注 对于多功能仪器，请参阅 IEC 60051-7。它还适用于： 直接作用指示电流表和电压表，其刻度标记不直接对应于其电输入量，只要它们之间的关系已知；直接作用指示电流表和电压表以及在其测量和/或辅助电路中具有电子装置的附件。本文件不适用于；其自己的 IEC 标准涵盖的特殊用途仪器；特殊用途设备在用作附件时受其自己的 IEC 标准涵盖。 [外文原描述]： IEC 60051-2:2018 applies to direct acting indicating ammeters and voltmeters having an analogue display. It also applies to: • direct acting indicating ammeters and voltmeters whose scale marks do not correspond directly to their electrical input quantity, provided that the relationship between them is known; • direct acting indicating ammeters and voltmeters and accessories having electronic devices in their measuring and/or auxiliary circuits. This document does not apply to: • special purpose instruments which are covered by their own IEC standards; • special purpose devices which are covered by their own IEC standards when they are used as accessories. IEC 60051-2:2018 cancels and replaces the fourth edition published in 1984. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) updating of content in line with new editions of IEC 60051-1 and IEC 60051-9; b) addition of Annex A to specify the nonconformity classification of test item. This International Standard is to be used in conjunction with IEC 60051-1:2016.