Publication details
| Publication CODE |
Title |
| IEC 60970:2007 (2007-07) |
INSULATING LIQUIDS - METHODS FOR COUNTING AND SIZING PARTICLES |
| |
| Price Excl. VAT |
Total number of pages, tables and drawings |
|
122.00 €
|
37. |
Description
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.
|
| Class |
C990
(IEC PUBLICATIONS IEC PUBLICATIONS)
|
Status
| Status |
IEC PUBLICATION |
| Situation |
Currently active
Replaces
IEC 60970:1989
|
|
Origin
| Committee |
TC 10
FLUIDS FOR ELECTROTECHNICAL APPLICATIONS
|
| Responsible |
Monsieur DE LEEUW Thierry, Technical Officer
Diamant Building
Bd Auguste Reyers, 80
1030
BRUXELLES
Phone: +32 2 706 85 72
E-mail: thierry.deleeuw@ceb-bec.be
|
Approval
| BEC Approval |
2007-07-16 |
| ICS-Code (International Standards Classification) |
17.220.99
, 29.040.10
|
|
| IEC publication date |
2007-07-16 |
| IEC stability date |
2022-12-31 |
| IEC last modification date |
2017-11-30 |
|
|
