FprEN IEC 63177:2024
(Main)Test methods for compatibility of construction materials with electrical insulating liquids
Test methods for compatibility of construction materials with electrical insulating liquids
IEC 63177:2024 specifies the test method for the compatibility of construction materials with electrical insulating liquids for use in electrical equipment, such as liquid-immersed transformers and tap-changers, liquid-impregnated capacitors, and liquid-cooled rotating machines used in electrical vehicles and oil pumps. This document is applicable to mineral insulating liquids, natural esters, silicone insulating liquids, synthetic organic esters, modified esters, capacitor fluids based on synthetic aromatic hydrocarbons and e-transmission fluids used in electrical vehicles and oil pumps. The compatibility tests are not sufficient for a full qualification of construction materials for a given application without additional tests requested by the appropriate IEC Technical Committee or equipment manufacturers.
Prüfverfahren für die Verträglichkeit von Baumaterialien mit elektrischen Isolierflüssigkeiten
Méthodes d'essai pour évaluer la compatibilité des matériaux de construction avec les isolants électriques liquides
L'IEC 63177:2024 spécifie la méthode d'essai pour évaluer la compatibilité des matériaux de construction avec les isolants électriques liquides destinés à être utilisés dans des matériels électriques, notamment les transformateurs et les changeurs de prises immergés dans du liquide, les condensateurs imprégnés de liquide, ainsi que les machines tournantes refroidies par un liquide utilisées dans les véhicules électriques et les pompes à huile. Le présent document s'applique aux liquides minéraux isolants, aux esters naturels, aux liquides isolants silicones, aux esters organiques de synthèse, aux esters modifiés, aux fluides pour condensateurs à base d'hydrocarbures aromatiques de synthèse, ainsi qu'aux fluides de transmission électronique utilisés dans les véhicules électriques et les pompes à huile. Les essais de compatibilité ne sont pas suffisants pour effectuer une qualification complète des matériaux de construction destinés à une application spécifique, sans effectuer les essais supplémentaires demandés par le comité d'études de l'IEC compétent ou par les fabricants d'équipements concernés.
Preskusna metoda za ugotavljanje združljivosti gradbenih materialov z elektroizolacijskimi tekočinami
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN IEC 63177:2023
01-marec-2023
Preskusna metoda za ugotavljanje združljivosti gradbenih materialov z
elektroizolacijskimi tekočinami
Test method for compatibility of construction materials with electrical insulating liquids
Ta slovenski standard je istoveten z: prEN IEC 63177:2023
ICS:
29.040.01 Izolacijski fluidi na splošno Insulating fluids in general
29.080.99 Drugi standardi v zvezi z Other standards related to
izolacijo insulation
oSIST prEN IEC 63177:2023 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
oSIST prEN IEC 63177:2023
oSIST prEN IEC 63177:2023
112/599/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 63177 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2023-01-20 2023-04-14
SUPERSEDES DOCUMENTS:
112/577/CD, 112/598/CC
IEC TC 112 : EVALUATION AND QUALIFICATION OF ELECTRICAL INSULATING MATERIALS AND SYSTEMS
SECRETARIAT: SECRETARY:
Germany Mr Bernd Komanschek
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
TC 2,TC 10,TC 14
Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of
• any relevant patent rights of which they are aware and to provide supporting documentation,
• any relevant “in some countries” clauses to be included should this proposal proceed. Recipients are
reminded that the enquiry stage is the final stage for submitting "in some countries" clauses. See
AC/22/2007.
TITLE:
Test method for compatibility of construction materials with electrical insulating liquids
PROPOSED STABILITY DATE: 2026
NOTE FROM TC/SC OFFICERS:
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.
oSIST prEN IEC 63177:2023
– 2 – IEC CDV 63177 © IEC:2022
1 CONTENTS
3 FOREWORD . 3
4 INTRODUCTION . 5
5 1 Scope . 6
6 2 Normative references . 6
7 3 Terms and definitions . 7
8 4 General Information . 10
9 5 Sampling and preparation . 10
10 5.1 Test specimens – Solid materials . 10
11 5.2 Pre-treatment . 11
12 5.3 Test liquids . 11
13 5.3.1 Liquids applied in transformers and tap-changers . 11
14 5.3.2 Liquids applied in capacitors . 12
15 5.3.3 Liquids applied in liquid-cooled rotating machines . 12
16 6 Procedure . 12
17 6.1 General . 12
18 6.2 Conditioning procedure for liquid-immersed transformers and tap-changers . 12
19 6.3 Conditioning procedure for liquid-impregnated capacitors . 12
20 6.4 Conditioning procedure for liquid-cooled rotating machines . 13
21 6.5 Test Procedure . 13
22 7 Report . 14
23 Annex A (informative) Example for a Compatibility Testing of a NBR O-Ring under
24 Mineral Oil for Transformer Application . 16
25 A.1 General . 16
26 A.2 Test Items and Standards . 16
27 Bibliography . 17
29 Table 1 – Limit values of water content and breakdown voltage for transformer
30 insulating liquids after pre-conditioning . 11
31 Table 2 – Required properties of insulating liquids for transformers and tap-changers . 13
32 Table 3 – Required properties of capacitor fluids . 13
33 Table 4 – Required properties of e-transmission fluids for rotating machines . 14
34 Table 5 – Examples for test of impregnating resins, multi-component materials . 14
35 Table 6 – Examples for test of enamelled wire . 14
36 Table 7 – Examples for test of gasket materials . 14
37 Table A.1. – Tests of a NBR O-Ring under delivery conditions . 16
38 Table A.2. – Tests on the O-Ring after storage mineral oil . 16
39 Table A.3. – Tests on the mineral oil after storage with the O-ring . 16
oSIST prEN IEC 63177:2023
IEC CDV 63177 © IEC:2022 – 3 –
42 TEST METHODS FOR COMPATIBILITY OF CONSTRUCTION MATERIALS
43 WITH ELECTRICAL INSULATING LIQUIDS
44 ____________
46 FOREWORD
47 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
48 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
49 co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
50 in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
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55 Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
56 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
57 consensus of opinion on the relevant subjects since each technical committee has representation from all
58 interested IEC National Committees.
59 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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62 misinterpretation by any end user.
63 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
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66 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
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69 6) All users should ensure that they have the latest edition of this publication.
70 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
71 members of its technical committees and IEC National Committees for any personal injury, property damage or
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73 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
74 Publications.
75 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
76 indispensable for the correct application of this publication.
77 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
78 rights. IEC shall not be held responsible for identifying any or all such patent rights.
79 IEC 63177 has been prepared by subcommittee WG 6: general methods of evaluation of
80 electrical insulation systems, of IEC technical committee 112: evaluation and qualification of
81 electrical insulating materials and systems. It is an International Standard.
82 The text of this International Standard is based on the following documents:
Draft Report on voting
112/XX/FDIS 112/XX/RVD
84 Full information on the voting for its approval can be found in the report on voting indicated in
85 the above table.
86 The language used for the development of this International Standard is English.
87 This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
88 accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
89 at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
90 described in greater detail at http://www.iec.ch/standardsdev/publications.
91 The committee has decided that the contents of this document will remain unchanged until the
92 stability date indicated on the IEC website under webstore.iec.ch in the data related to the
93 specific document. At this date, the document will be
oSIST prEN IEC 63177:2023
– 4 – IEC CDV 63177 © IEC:2022
94 • reconfirmed,
95 • withdrawn,
96 • replaced by a revised edition, or
97 • amended.
oSIST prEN IEC 63177:2023
IEC CDV 63177 © IEC:2022 – 5 –
98 INTRODUCTION
99 The objective of the standard is to clarify the evaluation methodology for the compatibility
100 between construction materials and electrical insulating liquids. It provides recommendations
101 for manufacturers, who produce liquid-immersed transformers and tap-changers, liquid-
102 impregnated capacitors, and liquid-cooled rotating machines used in electrical vehicles and oil
103 pumps to screen appropriate construction materials for their use with different liquids under
104 different operating conditions and contains tests for aged liquids and aged construction
105 materials.
106 In the past, limited construction materials and liquids based on mineral oil served the industry
107 needs. Since the industry needs have been advanced with new applications and driven by
108 higher flash points and improved reliability of performance for liquid-filled electrical equipment,
109 it is necessary to be able to evaluate high temperature electrical insulation systems, using
110 silicone oils, synthetic esters, natural esters and other potential suitable insulating liquids.
111 At the same time, liquid-cooled rotating machines used in electrical vehicles and oil pumps also
112 increase the possibility for construction materials to be exposed to different liquids, driven by
113 better thermal conductive performance. To avoid mechanical, electrical and sealing failure for
114 construction materials, such as gasket materials, impregnating resins, prefabricates, etc., the
115 test methods described in this standard can be applied for different liquid-immersed electrical
116 equipment, including liquid-immersed transformers and tap-changers, liquid-impregnated
117 capacitors and liquid-cooled rotating machines used in electrical vehicles and oil pumps.
118 The evaluation process specified in this document focuses on the chemical compatibility
119 between construction materials and liquids but does not provide a long-term thermal or aging
120 evaluation. In addition, threshold values for functional parameters of each material are not
121 specified, as they depend on the requirements of the specific application.
122 Clauses 1 to 5 contain definitions and describe the preparation of suitable solid and liquid test
123 samples.
124 Clause 6 describes the test procedure (e.g. temperatures, test duration and cycles) and gives
125 exemplary guidance on characteristic parameters to be evaluated. This allows an estimate of
126 the basic compatibility of typical construction materials with insulating liquids.
...
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