BS EN 60599:2016

$167.15

Mineral oil-filled electrical equipment in service. Guidance on the interpretation of dissolved and free gases analysis

Published By	Publication Date	Number of Pages
BSI	2016	44

Guaranteed Safe Checkout

Categories: 17.220.99 - Other standards related to electricity and magnetism, BSI

If you have any questions, feel free to reach out to our online customer service team by clicking on the bottom right corner. We’re here to assist you 24/7.
Email:[email protected]

Description

This International Standard describes how the concentrations of dissolved gases or free gases may be interpreted to diagnose the condition of oil-filled electrical equipment in service and suggest future action.

This standard is applicable to electrical equipment filled with mineral insulating oil and insulated with cellulosic paper or pressboard-based solid insulation. Information about specific types of equipment such as transformers (power, instrument, industrial, railways, distribution), reactors, bushings, switchgear and oil-filled cables is given only as an indication in the application notes (see Annex A).

This standard may be applied, but only with caution, to other liquid-solid insulating systems.

In any case, the indications obtained should be viewed only as guidance and any resulting action should be undertaken only with proper engineering judgment.

PDF Catalog

PDF Pages	PDF Title
4	European foreword Endorsement notice
5	Annex ZA (normative) Normative references to international publications with their corresponding European publications
6	English CONTENTS
9	FOREWORD
11	INTRODUCTION
12	1 Scope 2 Normative references
13	3 Terms, definitions and abbreviations 3.1 Terms and definitions
15	3.2 Abbreviations 3.2.1 Chemical names and formulae 3.2.2 General abbreviations 4 Mechanisms of gas formation 4.1 Decomposition of oil
16	4.2 Decomposition of cellulosic insulation 4.3 Stray gassing of oil 4.4 Other sources of gas
17	5 Identification of faults 5.1 General 5.2 Dissolved gas compositions 5.3 Types of faults
18	5.4 Basic gas ratios Tables Table 1 – DGA interpretation table
19	5.5 CO2/CO ratio Table 2 – Simplified scheme of interpretation
20	5.6 O2/N2 ratio 5.7 C2H2/H2 ratio 5.8 C3 hydrocarbons 5.9 Evolution of faults
21	5.10 Graphical representations 6 Conditions for calculating ratios 6.1 Examination of DGA values 6.2 Uncertainty on gas ratios
22	7 Application to free gases in gas relays
23	8 Gas concentration levels in service 8.1 Probability of failure in service 8.1.1 General Table 3 – Ostwald solubility coefficients for various gases in mineral insulating oils
24	8.1.2 Calculation methods 8.2 Typical concentration values 8.2.1 General 8.2.2 Calculation methods 8.2.3 Choice of normality percentages
25	8.2.4 Alarm concentration values 8.3 Rates of gas increase 9 Recommended method of DGA interpretation (see Figure 1)
26	10 Report of results
27	Figures Figure 1 – Flow chart
28	Annex A (informative) Equipment application notes A.1 General warning A.2 Power transformers A.2.1 Specific sub-types A.2.2 Typical faults
29	A.2.3 Identification of faults by DGA A.2.4 Typical concentration values Table A.1 – Typical faults in power transformers
30	A.2.5 Typical rates of gas increase Table A.2 – Ranges of 90 % typical gas concentration values observed in power transformers, in μl/l Table A.3 – Ranges of 90 % typical rates of gas increase observed in power transformers (all types), in μl/l/year
31	A.2.6 Specific information to be added to the DGA report (see Clause 10) A.3 Industrial and special transformers A.3.1 Specific sub-types A.3.2 Typical faults A.3.3 Identification of faults by DGA. A.3.4 Typical concentration values
32	A.4 Instrument transformers A.4.1 Specific sub-types A.4.2 Typical faults Table A.4 – Examples of 90 % typical concentration values observed on individual networks
33	A.4.3 Identification of faults by DGA A.4.4 Typical concentration values Table A.5 – Typical faults in instrument transformers Table A.6 – Ranges of 90 % typical concentration values observed in instrument transformers
34	A.5 Bushings A.5.1 Specific sub-types A.5.2 Typical faults A.5.3 Identification of faults by DGA Table A.7 – Maximum admissible values for sealed instrument transformers Table A.8 – Typical faults in bushings
35	A.5.4 Typical concentration values A.6 Oil-filled cables A.6.1 Typical faults A.6.2 Identification of faults by DGA A.6.3 Typical concentration values Table A.9 – Simplified interpretation scheme for bushings Table A.10 – 95 % typical concentration values in bushings
36	A.7 Switching equipment A.7.1 Specific sub-types A.7.2 Normal operation A.7.3 Typical faults A.7.4 Identification of faults by DGA Table A.11 – Ranges of 95 % typical concentration values observed on cables Table A.12 – Typical faults in switching equipment
37	A.8 Equipment filled with non-mineral fluids
38	Annex B (informative) Graphical representations of gas ratios (see 5.10) Figure B.1 – Graphical representation 1 of gas ratios (see [3])
39	Figure B.2 – Graphical representation 2 of gas ratios
40	Figure B.3 – Graphical representation 3 of gas ratios – Duval’s triangle 1 for transformers, bushings and cables(see [4])
41	Figure B.4 – Graphical representation 4 of gas ratios – Duval’s triangle 2 for OLTCs (see A.7.2)
42	Bibliography

Additional information

Status	Withdrawn
Title	Mineral oil-filled electrical equipment in service. Guidance on the interpretation of dissolved and free gases analysis
Replaces	BS EN 60599:1999, BS EN 60599:1999
Publisher	BSI
Committee	GEL/10
Pages	44
Publication Date	2016-01-31
Withdrawn Date	2022-07-21
Replaced By	BS EN IEC 60599:2022, BS EN IEC 60599:2022
ISBN	978 0 580 83411 0
Standard Number	BS EN 60599:2016
Identical National Standard Of	IEC 60599:2015, EN 60300-3-16:2008, EN 60599:2016
Descriptors	Defects, Electrical equipment, Dissolved gases, Bushes (mechanical components), Mineral oils, Concentration (chemical), Transformers, Pressboard, Oil-filled electrical equipment, Power transformers, Solid electrical insulating materials, Instrument transformers, Gas analysis, Insulating oils, Switchgear, Degradation, Gases, Oil-immersed transformers, Switches, Paper
ICS Codes	17.220.99 - Other standards related to electricity and magnetism

Preview PDF


PDF Format	Searchable	Printable	Preview Now

BS EN 60599:2016

PDF Catalog

Related products