ASTM D1275-15
(Test Method)Standard Test Method for Corrosive Sulfur in Electrical Insulating Liquids
Standard Test Method for Corrosive Sulfur in Electrical Insulating Liquids
SIGNIFICANCE AND USE
3.1 In most of their uses, insulating liquids are continually in contact with metals that are subject to corrosion. The presence of elemental sulfur or corrosive sulfur compounds will result in deterioration of these metals and cause conductive or high resistive films to form. The extent of deterioration is dependent upon the quantity and type of corrosive agent and time and temperature factors. Detection of these undesirable impurities, even though not in terms of quantitative values, is a means for recognizing the hazard involved.
3.2 Two methods are provided, one for copper corrosion and one for silver corrosion. Copper is slightly less sensitive to sulfur corrosion than silver but the results are easier to interpret and less prone to error. The silver corrosion procedure is provided especially for those users who have applications where the insulating liquid is in contact with a silver surface.
SCOPE
1.1 This test method describes the detection of corrosive sulfur compounds (both inorganic and organic) in electrical insulating liquids.
1.2 New and in-service insulating liquids may contain elemental sulfur or sulfur compounds, or both, that cause corrosion under certain conditions of use. This test method is designed to detect the presence of, or the propensity to form, free (elemental) sulfur and corrosive sulfur compounds by subjecting copper or silver to contact with an insulating liquid under prescribed conditions.
1.3 The values stated in SI units are to be regarded as the standard. Inch-pound units are included for informational purposes.
1.4 This standard does not purport to address the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D1275 − 15
315/98
Standard Test Method for
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Corrosive Sulfur in Electrical Insulating Liquids
This standard is issued under the fixed designation D1275; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been adopted for use by government agencies to replace Method5328-2 of Federal Test Method Standard No. 791b.
This standard was adopted as an ASTM-IP Standard.
This standard has been approved for use by agencies of the U.S. Department of Defense.
INTRODUCTION
Prior to 2006, this test method existed as a singular method in which the main aging parameters of
the test specimen were 19 h at 140°C. In 2006, it was determined that those parameters were
inadequate (not sensitive enough to detect all levels of corrosive sulfur) and Method B was instituted
in which the main aging parameters were 48 h at 150°C. The old parameters were kept as MethodA
to avoid any confusion. The current edition of this test method for the copper corrosion procedure
reverts back to a singular method in which the main aging parameters are the same as the previous
Method B (2006-2014). Results from the current test method cannot be compared or correlated to the
method prior to 2006 and only to Method B from 2006 to 2014.
1. Scope 1.5 This international standard was developed in accor-
dance with internationally recognized principles on standard-
1.1 This test method describes the detection of corrosive
ization established in the Decision on Principles for the
sulfur compounds (both inorganic and organic) in electrical
Development of International Standards, Guides and Recom-
insulating liquids.
mendations issued by the World Trade Organization Technical
1.2 New and in-service insulating liquids may contain
Barriers to Trade (TBT) Committee.
elemental sulfur or sulfur compounds, or both, that cause
corrosion under certain conditions of use. This test method is
2. Referenced Documents
designed to detect the presence of, or the propensity to form,
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2.1 ASTM Standards:
free (elemental) sulfur and corrosive sulfur compounds by
D130Test Method for Corrosiveness to Copper from Petro-
subjecting copper or silver to contact with an insulating liquid
leum Products by Copper Strip Test
under prescribed conditions.
D923Practices for Sampling Electrical Insulating Liquids
1.3 The values stated in SI units are to be regarded as the
E11Specification forWovenWireTest Sieve Cloth andTest
standard. Inch-pound units are included for informational
Sieves
purposes.
2.2 Other Document:
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1.4 This standard does not purport to address all of the
ANSI B74.10Grading of Abrasive Microgrits
safety concerns, if any, associated with its use. It is the
DIN51353TestingofInsulatingOils;detectionofcorrosive
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responsibility of the user of this standard to establish appro-
sulfur, silver strip test
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
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This test method is under the jurisdiction of ASTM Committee D27 on Standards volume information, refer to the standard’s Document Summary page on
Electrical Insulating Liquids and Gases and is the direct responsibility of Subcom- the ASTM website.
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mittee D27.06 on Chemical Test. Available from American National Standards Institute, 25 W. 43rd St., 4th
Current edition approved Nov. 15, 2015. Published January 2016. Originally Floor, New York, NY 10036, USA.
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approvedin1953.Lastpreviouseditionapprovedin2006asD1275–06whichwas Available from Deutsches Institut für Normung e.V.(DIN), Am DIN-Platz,
withdrawn January 2015 and reinstated in December 2015. DOI: 10.1520/D1275- Burggrafenstrasse 6, 10787 Berlin, Germany, http://www.din.de or http://
15. www.bleuth.de
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D1275 − 15
3. Significance and Use 5.5 Water, distilled.
3.1 In most of their uses, insulating liquids are continually
6. Summary of Test Methods
in contact with metals that are subject to corrosion. The
6.1 Copper Corrosion—220 mLof insulating liquid is aged
presence of elemental sulfur or corrosive sulfur compounds
in a sealed heavy-walled bottle for 48 h at 150°C in the
willresultindeteri
...
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