BS EN IEC 60475:2022 – TC 2023
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Tracked Changes. Method of sampling insulating liquids
Published By | Publication Date | Number of Pages |
BSI | 2023 | 82 |
This document is applicable to the sampling procedure used for insulating liquids in delivery containers and in electrical equipment such as power and instrument transformers, reactors, bushings, oil-filled cables, oil-filled tank-type capacitors, switchgear and load tap changers (LTCs). This document applies to liquids the viscosity of which at the sampling temperature is less than 1 500 mm2/s (or cSt). It applies to mineral oils and non-mineral oils (such as synthetic esters, natural esters, vegetable oils or silicones).
PDF Catalog
PDF Pages | PDF Title |
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48 | undefined |
51 | Annex ZA (normative)Normative references to international publicationswith their corresponding European publications |
53 | English CONTENTS |
54 | FOREWORD |
56 | INTRODUCTION |
57 | 1 Scope 2 Normative references 3 Terms and definitions |
58 | 4 General principles for the sampling of insulating liquids 4.1 New insulating liquids in delivery containers 4.1.1 Place of sampling 4.1.2 Quantity of sample to be taken 4.1.3 Sampling equipment |
59 | Figure 1 – Thief dipper |
60 | Figure 2 – Cream dipper |
61 | Figure 3 – Pipette Figure 4 – Siphon |
62 | 4.1.4 Sampling procedure Table 1 – Types of samples of new insulating liquids |
64 | 4.2 Sampling of oil from oil-filled equipment 4.2.1 General remarks |
66 | Figure 5 – Sampling of oil by syringe |
67 | Figure 6 – Sampling of oil by ampoule |
68 | Figure 7 – Sampling of oil by bottle |
69 | Table 2 – Sample containers for oil tests |
70 | 4.2.2 Sampling of oil by syringe |
71 | 4.2.3 Sampling of oil by ampoule |
72 | 4.2.4 Sampling of oil by flexible metal bottles |
73 | 4.2.5 Sampling of oil by glass and rigid metal bottles |
74 | 4.2.6 Sampling of oil by plastic bottles 4.3 Storage and transportation of samples 4.4 Labelling of samples |
75 | Table 3 – Information required on oil sample labels |
76 | Annex A (informative) Procedure for sampling at intermediate levels (making up of the average sample) A.1 Use of the thief dipper A.2 Use of the pipette A.3 Use of the siphon A.4 General remark |
77 | Annex B (informative) Procedure for testing the integrity of the syringes |
78 | Annex C (informative) Procedure for sampling oil from bushings |
80 | Bibliography |