ASTM D923-15

Standard Practices for Sampling Electrical Insulating Liquids

SIGNIFICANCE AND USE
4.1 Accurate sampling, whether of the complete contents or only parts thereof, is extremely important from the standpoint of evaluating the quality of the liquid insulant sampled. Obviously, examination of a test specimen that, because of careless sampling procedure or contamination in sampling equipment, is not directly representative, leads to erroneous conclusions concerning quality and in addition results in a loss of time, effort, and expense in securing, transporting, and testing the sample.  
4.2 A study of gases and moisture contained in insulating oils from transformers and other electrical power apparatus can frequently give an early indication of abnormal behavior of the apparatus, and may indicate appropriate action be taken on the equipment before it suffers greater damage. Specific gas and moisture content can be determined from oil sampled for this purpose.
SCOPE
1.1 These practices cover sampling of new electrical insulating liquids including oils, askarels, silicones, synthetic liquids, and natural ester insulating liquids as well as those insulating liquids in service or subsequent to service in cables, transformers, circuit breakers, and other electrical apparatus. These practices apply to liquids having a viscosity of less than 6.476 × 10-4 m2/s (540 cSt) at 40°C (104°F).  
1.2 Representative samples of electrical insulating liquids are taken for test specimens so that the quality pertinent to their use may be determined. The quality in different portions of a given container, or the average quality of the whole bulk may be ascertained if desired.  
1.3 The values stated in SI units are regarded as the standard where applicable. Inch pound units are used where there is no SI equivalent.  
1.4 These practices also include special techniques and devices for sampling for dissolved gases-in-oil (DGA) (D3612), water (D1533) and particles (D6786).  
1.5 For ease of use, this document has been indexed as follows:    
Section Title  
Section/Paragraph  
Mandatory Conditions and General Information  
Section 5  
Description of Sampling Devices and Containers  
Section 6, Annex A1, Appendix X2  
Most Frequently Used Sampling Techniques for Electrical Apparatus  
Collecting Samples from Electrical Equipment Using Bottles and Cans  
Section 7, Appendix X1, Appendix X2  
Collecting Samples from Electrical Equipment Using Glass Syringes (DGA and Water Analysis)  
Section 8  
Collecting Samples from Electrical Equipment Using Stainless Steel Cylinders (DGA and Water Analysis)  
Section 9  
Sampling of Cans, Drums, Tank Cars, Tank Trucks and Small Electrical Equipment  
Sampling Using the Dip-Type Device (drum thief)  
Section 10  
Sampling Using the Pressure-Type Device  
Section 11, Annex A1.1  
Sampling Using the Tank Car-Type Device  
Section 12, Annex A1.2  
Sampling Cable Feeders  
Mandatory Conditions  
Section 13  
General Considerations  
Section 14  
Sampling Using the Manifold-Type Device  
Section 15, Annex A1.3  
Cleaning, Preparation, Storage, and Handling of Sampling Containers  
Section 16  
Storage, Packaging and Shipping of Samples  
Section 17  
Cleaning and Storage of Sampling Devices  
Section 18  
Sample Information  
Section 19  
Mandatory Information—Construction of Sampling Devices  
Annex A1  
Determination of Electrical Apparatus Temperature  
Appendix X1  
Sample Container Types  
Appendix X2  
1.6 Handle askarels containing polychlorinated biphenyls (PCBs) according to federal and local regulations existing for that country. For example, the federal regulations concerning PCBs in the United States can be found in 40 CFR Part 761.  
1.7 Properly contain, package and dispose of any liquid or material resulting from the use of these practices in a manner that is in accordance with local and state regulations specific to the country in whi...

General Information

• Status: Historical
• Publication Date: 30-Sep-2015
• ICS: 29.040.10 - Insulating oils
• Technical Committee: D27 - Electrical Insulating Liquids and Gases
• Drafting Committee: D27.07 - Physical Test

Relations

• Replaces: ASTM D923-07 - Standard Practices for Sampling Electrical Insulating Liquids
• Effective Date: 01-Oct-2015
• Refers: ASTM D3612-02(2017) - Standard Test Method for Analysis of Gases Dissolved in Electrical Insulating Oil by Gas Chromatography
• Effective Date: 15-Nov-2017
• Refers: ASTM D1933-03(2017) - Standard Specification for Nitrogen Gas as an Electrical Insulating Material
• Effective Date: 01-Jan-2017
• Refers: ASTM D6786-15 - Standard Test Method for Particle Count in Mineral Insulating Oil Using Automatic Optical Particle Counters
• Effective Date: 01-Oct-2015
• Refers: ASTM D4057-06(2011) - Standard Practice for Manual Sampling of Petroleum and Petroleum Products
• Effective Date: 01-Jun-2011
• Refers: ASTM D3612-02(2009) - Standard Test Method for Analysis of Gases Dissolved in Electrical Insulating Oil by Gas Chromatography
• Effective Date: 15-May-2009
• Refers: ASTM D1933-03(2008) - Standard Specification for Nitrogen Gas as an Electrical Insulating Material
• Effective Date: 01-May-2008
• Refers: ASTM D6786-08 - Standard Test Method for Particle Count in Mineral Insulating Oil Using Automatic Optical Particle Counters
• Effective Date: 01-Jan-2008
• Refers: ASTM D6786-07 - Standard Test Method for Particle Count in Mineral Insulating Oil Using Automatic Optical Particle Counters
• Effective Date: 01-Dec-2007
• Refers: ASTM D1533-00(2005) - Standard Test Method for Water in Insulating Liquids by Coulometric Karl Fischer Titration
• Effective Date: 01-Oct-2005
• Refers: ASTM D1933-03 - Standard Specification for Nitrogen Gas as an Electrical Insulating Material
• Effective Date: 01-Oct-2003
• Refers: ASTM D3612-02e1 - Standard Test Method for Analysis of Gases Dissolved in Electrical Insulating Oil by Gas Chromatography
• Effective Date: 10-Oct-2002
• Refers: ASTM D3612-02 - Standard Test Method for Analysis of Gases Dissolved in Electrical Insulating Oil by Gas Chromatography
• Effective Date: 10-Oct-2002
• Refers: ASTM D6786-02 - Standard Test Method for Particle Count in Mineral Insulating Oil Using Automatic Optical Particle Counters
• Effective Date: 10-Apr-2002
• Refers: ASTM D3612-01 - Standard Test Method for Analysis of Gases Dissolved in Electrical Insulating Oil by Gas Chromatography
• Effective Date: 10-Feb-2001

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: D923 − 15
Standard Practices for
1
Sampling Electrical Insulating Liquids
This standard is issued under the fixed designation D923; 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 approved for use by agencies of the U.S. Department of Defense.
1. Scope
Section/
Section Title
Paragraph
1.1 These practices cover sampling of new electrical insu-
lating liquids including oils, askarels, silicones, synthetic Collecting Samples from Electrical Equipment Using Section 9
Stainless Steel Cylinders (DGA and Water Analysis)
liquids, and natural ester insulating liquids as well as those
insulating liquids in service or subsequent to service in cables,
Sampling of Cans, Drums, Tank Cars, Tank Trucks and
transformers, circuit breakers, and other electrical apparatus. Small Electrical Equipment
Sampling Using the Dip-Type Device (drum thief) Section 10
These practices apply to liquids having a viscosity of less than
Sampling Using the Pressure-Type Device Section 11,
-4 2
6.476 × 10 m /s (540 cSt) at 40°C (104°F).
Annex A1.1
Sampling Using the Tank Car-Type Device Section 12,
1.2 Representative samples of electrical insulating liquids
Annex A1.2
aretakenfortestspecimenssothatthequalitypertinenttotheir
Sampling Cable Feeders
Mandatory Conditions Section 13
use may be determined. The quality in different portions of a
General Considerations Section 14
given container, or the average quality of the whole bulk may
Sampling Using the Manifold-Type Device Section 15,
be ascertained if desired. Annex A1.3
Cleaning, Preparation, Storage, and Handling of Section 16
1.3 ThevaluesstatedinSIunitsareregardedasthestandard
Sampling Containers
Storage, Packaging and Shipping of Samples Section 17
where applicable. Inch pound units are used where there is no
Cleaning and Storage of Sampling Devices Section 18
SI equivalent.
Sample Information Section 19
1.4 These practices also include special techniques and
Mandatory Information—Construction of Sampling Devices Annex A1
devices for sampling for dissolved gases-in-oil (DGA)
Determination of Electrical Apparatus Temperature Appendix X1
(D3612), water (D1533) and particles (D6786).
Sample Container Types Appendix X2
1.6 Handle askarels containing polychlorinated biphenyls
1.5 For ease of use, this document has been indexed as
(PCBs) according to federal and local regulations existing for
follows:
that country. For example, the federal regulations concerning
Section/
Section Title
Paragraph PCBs in the United States can be found in 40 CFR Part 761.
1.7 Properly contain, package and dispose of any liquid or
Mandatory Conditions and General Information Section 5
Description of Sampling Devices and Containers Section 6,
material resulting from the use of these practices in a manner
Annex A1,
thatisinaccordancewithlocalandstateregulationsspecificto
Appendix X2
the country in which the samples are taken.
Most Frequently Used Sampling Techniques for
Electrical Apparatus
1.8 This standard does not purport to address all of the
Collecting Samples from Electrical Equipment Using Bottles Section 7,
safety concerns, if any, associated with its use. It is the
and Cans Appendix X1,
Appendix X2
responsibility of the user of this standard to establish appro-
Collecting Samples from Electrical Equipment Using Glass Section 8
priate safety and health practices and determine the applica-
Syringes (DGA and Water Analysis)
bility of regulatory limitations prior to use. Specific warning
statements are given in 1.6, 1.7, Section 5, 10.1, 13.2, 15.2.3,
1
These practices are under the jurisdiction of ASTM Committee D27 on Section 16, and 18.2. These practices involve close contact
Electrical Insulating Liquids and Gases and are the direct responsibility of
with the electrical insulating liquids being sampled as well as
Subcommittee D27.07 on Physical Test.
liquidsandothermaterialsusedtocleanthesamplingtoolsand
Current edition approved Oct. 1, 2015. Published October 2015. Originally
devices.When required, or as a matter of diligence to personal
approved in 1947. Last previous edition approved in 2007 as D923–07. DOI:
10.1520/D0923-15. safety, use personal protective equipment (PPE).
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D923 − 15
2. Referenced Documents 5.1.1 Energized electrical appara
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D923 − 07 D923 − 15
Standard Practices for
1
Sampling Electrical Insulating Liquids
This standard is issued under the fixed designation D923; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number 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 approved for use by agencies of the U.S. Department of Defense.
1. Scope
1.1 These practices cover sampling of new electrical insulating liquids including oils, askarels, silicones, synthetic liquids, and
natural ester insulating liquids as well as those insulating liquids in service or subsequent to service in cables, transformers, circuit
-4 2
breakers, and other electrical apparatus. These practices apply to liquids having a viscosity of less than 6.476 × 10 m /s (540 cSt)
at 40°C (104°F).
1.2 Representative samples of electrical insulating liquids are taken for test specimens so that the quality pertinent to their use
may be determined. The quality in different portions of a given container, or the average quality of the whole bulk may be
ascertained if desired.
1.3 The values stated in SI units are regarded as the standard where applicable. Inch pound units are used where there is no SI
equivalent.
1.4 These practices also include special techniques and devices for sampling for dissolved gases-in-oil (DGA) (D3612), water
(D1533) and particles (D6786).
1.5 For ease of use, this document has been indexed as follows:
Section/
Section Title
Paragraph
Mandatory Conditions and General Information Section 5
Description of Sampling Devices and Containers Section 6,
Annex A1,
Appendix X2
Most Frequently Used Sampling Techniques for
Electrical Apparatus
Collecting Samples from Electrical Equipment Using Bottles Section 7,
and Cans Appendix X1,
Appendix X2
Collecting Samples from Electrical Equipment Using Glass Section 8
Syringes (DGA and Water Analysis)
Collecting Samples from Electrical Equipment Using Section 9
Stainless Steel Cylinders (DGA and Water Analysis)
Sampling of Cans, Drums, Tank Cars, Tank Trucks and
Small Electrical Equipment
Sampling Using the Dip-Type Device (drum thief) Section 10
Sampling Using the Pressure-Type Device Section 11,
Annex A1.1
Sampling Using the Tank Car-Type Device Section 12,
Annex A1.2
Sampling Cable Feeders
Mandatory Conditions Section 13
General Considerations Section 14
Sampling Using the Manifold-Type Device Section 15,
Annex A1.3
Cleaning, Preparation, Storage, and Handling of Section 16
Sampling Containers
Storage, Packaging and Shipping of Samples Section 17
1
These practices are under the jurisdiction of ASTM Committee D27 on Electrical Insulating Liquids and Gases and are the direct responsibility of Subcommittee D27.07
on Physical Test.
Current edition approved July 15, 2007Oct. 1, 2015. Published September 2007October 2015. Originally approved in 1947. Last previous edition approved in 19972007
as D923 – 07. DOI: 10.1520/D0923-07.10.1520/D0923-15.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D923 − 15
Section/
Section Title
Paragraph
Cleaning and Storage of Sampling Devices Section 18
Sample Information Section 19
Mandatory Information—Construction of Sampling Devices Annex A1
Determination of Electrical Apparatus Temperature Appendix X1
Sample Container Types Appendix X2
1.6 Handle askarels containing polychlorinated biphenyls (PCBs) according to federal and local regulations existing for that
country. For example, the federal regulations concerning PCBs in the United States can be found in 40 CFR Part 761.
1.7 Properly contain, package and dispose of any liquid or material resulting from the use of these practices in a manner that
is in accordance with local and state regulations specific to the country in which the samples are taken.
1.8 This standard does not purport to address all of 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. Specific warning statements are given in 1.6, 1.7, Section 5, 10.1, 13.2, 15.2.3, Section 16, and 18.2. These
practices involve close contact with the electrical insulating liquids being sampled as well as liquids and ot
...