CENELEC
Project
| Reference | EN 62535:2009 |
|---|---|
| Title | Insulating liquids - Test method for detection of potentially corrosive sulphur in used and unused insulating oil |
| Project Number | 21436 |
| Abstract/Scope | IEC 62535:2008 specifies a test method for detection of potentially corrosive sulphur in used and unused mineral insulating oil. Most recent failures due to corrosive sulphur are related to the formation of copper sulphide deposits in and on the surface of winding cellulosic paper. The test method uses a copper conductor, wrapped with one layer of paper, immersed in the oil and heated to evaluate the capability of the oil to yield copper sulphide and transfer it to paper layers. The growth of copper sulphide on bare copper may cause the presence of conductive particulates in the oil, which can act as nuclei for electrical discharge and may lead to a fault. Other test methods exist using a bare copper strip immersed in oil and heated to detect the corrosive behaviour of oil against copper. ASTM D1275 Method B is also used for this test and a modified procedure using low oil volumes is included in Annex A. Tests with and without paper are considered as complementary and may lead to different results. |
| Status |
Published
|
Status
| Current Stage code | 6060 |
|---|---|
| Current Stage code date | 2009-01-14 |
| Current Stage code deadline | 2009-09-01 |
| Deadline date for vote |
Legal
| Directive(s) | |
|---|---|
| Mandate(s) | |
| Order Voucher |
Details
| IEC Technical Body | IEC/TC 10 |
|---|---|
| Reference Document | IEC 62535:2008 (EQV) |
| ICS | 29.040.10 - Insulating oils |
| Keywords | Insulation; Liquid; Detection; Corrosive; Sulphur |
| Note | |
| A-Deviation(s) | |
| Special National Condition(s) |
Environment
|
Clause
|
Categories - Aspects
|
Product Life Cycle
|
Information
|
|---|
History
|
Stage
|
Date
|
Deadline Date
|
Documents
|
|---|---|---|---|
| 6060 | 2009-01-14 | 2009-09-01 |  EN FR DE |
| 5099 | 2008-12-01 | 2009-02-01 | |
| 5061 | 2008-10-29 | 2008-12-01 | |
| 5060 | 2008-09-23 | 2008-10-07 | EN |
| 5020 | 2008-07-18 | 2008-09-19 | |
| 3090 | 2008-02-22 | 2008-06-30 | |
| 5060 | 2008-01-14 | 2008-01-28 | EN |
| 5020 | 2007-08-03 | 2008-01-11 | |
| 1090 | 2007-07-31 | 2007-08-03 | |
| 1090 | 2007-07-21 | 2007-08-03 |
Implementation Dates
| date of Ratification (DOR) (1) | 2008-12-01 |
|---|---|
| date of Availability (DAV) (2) | 2009-01-14 |
| date of Announcement (DOA) (3) | 2009-03-01 |
| date of Publication (DOP) (4) | 2009-09-01 |
| date of Withdrawal (DOW) (5) | 2011-12-01 |
Relations
| Supersedes | |
|---|---|
| Superseded by | |
| Normative reference (6) | ASTM D1275 DIN 51353 ASTM D130 EN 13601 IEC 60475:1974 IEC 60554-3-1:1979 |
(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved
(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat
(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level
(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement
(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn
(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.
