GB/T 41146-2021Method of sampling insulating liquids (English PDF)

1 Scope

This document specifies sampling methods for insulating liquids, including transport containers and electrical equipment [such as power transformers, transformers, reactors, casings

Methods of sampling insulating liquids in pipes, oil-filled cables, oil-filled tank capacitors, switchgear and on-load tap-changers (LTCs)]:

This document applies to mineral oils and non-mineral oils (such as synthetic esters, natural ester or silicone oil):

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document:

IEC 60567:2011 Guide for gas sampling and analysis of free and dissolved gases in oil-filled electrical equipment (Oil-filed electrical equipment-Samplingofgasesand analysisoffreeanddissolvedgases-Guidance)

IEC 60970 Methods for particle counting and size classification of insulating liquids (Insulating liquids-Methodsforcountingand sizing particles)

3 Terms and Definitions

The following terms and definitions apply to this document:

3:1 shipping containers deliverycontainers

Containers for storing, transporting and delivering bulk oil products:

Note: Such as oil drums, railway tankers, road tankers or soft plastic bags:

3:2

Electrical equipment electricalequipment

Equipment filled with insulating oil, such as power transformers and transformers, reactors, bushings, oil-filled cables, oil-immersed iron-shell capacitors, switchgear and

On-load tap-changer (LTCS):

3:3 sampling equipment samplingequipment

For fittings from shipping containers (e:g: sampling probes, which can be ladle or siphon) and electrical equipment (e:g: connecting pipes and drain valves)

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