IEC 60970-2007
绝缘液体.粒子计数和大小测定用方法

Insulating liquids - Methods for counting and sizing particles

标准号

IEC 60970-2007

发布日期

2007年07月

实施日期

废止日期

无

中国标准分类号

K15;E38

国际标准分类号

17.220.99;29.040.10

发布单位

IX-IEC

引用标准

IEC 60475 ISO 4406 ISO 4407 ISO 5884 EN 50353

被代替标准

IEC 10/695/FDIS-2007 IEC 60970-1989

适用范围

This standard describes the sampling procedures and methods for the determination of particle concentration and size distribution. Three methods are specified. One uses an automatic particle size analyser, working on the light interruption principle.The other two use an optical microscope,in either the transmitted light or incident light mode,to count particles collected on the surface of a membrane filter.The optical microscope methods are described in ISO 4407. All three methods are applicable to both used and unused insulating liquids. Annex A contains an alternative sampling procedure using a syringe and Annex B reports a reference for the calibration of automatic particle counters.

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