电力变压器 - 第10部分:声级测定

[中文适用范围]： 本部分 IEC 6076 定义了通过测量声压和声强来确定变压器、电抗器及其相关冷却设备的声功率级。这些方法适用于 IEC 60076 和 IEC 61378 系列涵盖的变压器、电抗器及其冷却设备——无论是安装在变压器上还是与变压器分离。本标准主要适用于工厂进行的测量。现场条件可能非常不同，因为存在其他物体（包括其他变压器）的邻近影响。尽管如此，本标准在尽可能适用的范围内也适用于现场测量。 注：对于本标准的目的，术语“变压器”通常指“变压器或电抗器”。 [外文原描述]： IEC 60076-10:2016 defines sound pressure and sound intensity measurement methods from which sound power levels of transformers, reactors and their associated cooling devices are determined. The methods are applicable to transformers, reactors and their cooling devices - either fitted to or separate from the transformer - as covered by the IEC 60076 and IEC 61378 series. This standard is primarily intended to apply to measurements made at the factory. Conditions on-site can be very different because of the proximity of objects, including other transformers. Nevertheless, this standard is applied to the extent possible for on site measurements. This edition includes the following significant technical changes with respect to the previous edition: - additional useful definitions introduced; - definition of distribution type transformers introduced for the purpose this standard; - new clause for sound level measurement specification introduced; - requirement for 1/3 octave band measurements introduced for transformers other than distribution type transformers; - standard measurement distance changed from 0,3 m to 1 m for transformers other than distribution type transformers; - height of measurement surface is now clearly defined to count from the reflecting plane; - measurement surface formula unified; - correction criteria for intensity method introduced; - rules for sound measurements on dry-type reactors introduced; - figures revised; - new informative test report templates introduced (Annex B); - IEC 60076-10-1 (application guide) revised in parallel providing worthwhile information for the use of this standard.