SIST EN 60970:2007

Oznaka standarda: SIST EN 60970:2007
Koda projekta: 20683
Organizacija: SIST
Naslov (angleški): Insulating liquids - Methods for counting and sizing particles
Naslov (slovenski): Izolacijske tekočine – Metode za štetje in ugotavljanje velikosti delcev (IEC 60970:2007)
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Tehnični odbor: TPD - Tekoči in plinasti dielektriki
ICS: 17.220.99 29.040.01
Status: Objavljen
Objavljen: 01-dec-2007
Refer. št. objave: Sporočila 2007-12
Referenčna oznaka: EN 60970:2007
Področje projekta (angleško): 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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