ДСТУ EN 60567:2022 Маслонаповнене електричне обладнання. Відбирання проб газів і аналізування вільних і розчинених газів. Настанови (EN 60567:2011, IDT; IEC 60567:2011, IDT)



ДСТУ EN 60567:2022
(EN 60567:2011, IDT; IEC 60567:2011, IDT)

Маслонаповнене електричне обладнання.
Відбирання проб газів і аналізування вільних і розчинених газів. Настанови

 

 
   
 
Не є офіційним виданням.
Офіційне видання розповсюджує національний орган стандартизації
(ДП «УкрНДНЦ» http://uas.gov.ua)

Contents

Introduction

1 Scope

2 Normative references

3 Sampling of gases from gas-collecting (Buchholz) relays

3.1 General remarks

3.2 Sampling of free gases by syringe

3.3 Sampling of free gases by displacement of oil

3.4 Sampling of free gases by vacuum

3.5 Sampling of oil from oil filled equipment

4 Labelling of gas samples

5 Sampling, labelling and transferring of oil from oil-filled equipment

5.1 Sampling and labelling of oil

5.2 Transfer of oil for DGA analysis

6 Preparation of gas-in-oil standards

6.1 General remark

6.2 First method: preparation of a large volume of gas-in-oil standard

6.3 Second method: preparation of gas-in-oil standards in a syringe or a vial

7 Extraction of gases from oil

7.1 General remarks

7.2 Multi-cycle vacuum extraction using Toepler pump apparatus

7.3 Vacuum extraction by partial degassing method

7.4 Stripping extraction method

7.5 Headspace method

8 Gas analysis by gas-solid chromatography

8.1 General remarks

8.2 Outline of suitable methods using Table 4

8.3 Apparatus

8.4 Preparation of apparatus

8.5 Analysis

8.6 Calibration of the chromatograph

8.7 Calculations

9 Quality control

9.1 Verification of the entire analytical system

9.2 Limits of detection and quantification

9.3 Repeatability, reproducibility and accuracy

10 Report of results

Annex A (informative) Correction for incomplete gas extraction in partial degassing method by calculation

Annex B (informative) Mercury-free and shake test versions of the standard extraction methods

Annex C (informative) Preparation of air-saturated standards

Annex D (informative) Correction for gas bubbles in syringes and air gap in rigid bottles

Annex E (informative) Procedure for comparing gas monitor readings to laboratory results

Bibliography