當前位置： 首頁 > 標準詳情頁

IEC 60970 Ed. 2.0現行

Insulating liquids - Methods for counting and sizing particles

出版：International Electrotechnical Committee

獲取原文如何獲取原文？問客服獲取原文，即可享受本標準狀態變更提醒服務！

專家解讀視頻

基本信息

標準編號： IEC 60970 Ed. 2.0

發布時間：2007/7/16 0:00:00

標準類別：Standard

出版單位：International Electrotechnical Committee

標準頁數：37

標準簡介

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. The significant technical changes with respect to the previous edition are as follows: - new calibration procedures for automated laser particle; - three figures contamination code; - new procedure of sample pre-treatment when automated laser counter method are used.

本標準替代的舊標準

IEC 60970 Ed. 1.0

等同采用的國際標準

DIN IEC 60970 (1998-01) - Identical

VDE 0370-14:1998 - Identical

NFC 27 232:1990 - Identical

UNE 21970:1995 - Identical

CEI EN 60970 Ed. 1 (2007) - Identical

BS EN 60970:2007 - Identical

NF EN 60970:2007 - Identical

I.S. EN 60970:2007 - Identical

NEN EN IEC 60970:2007 - Identical