ASTM D923-07

Standard Practices for Sampling Electrical Insulating Liquids

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) (D 3612), water (D 1533) and particles (D 6786).
1.5 For ease of use, this document has been indexed as follows:
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.
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 other materials used to clean the sampling tools and devices. When required, or as a matter of diligence to personal safety, use personal protective equipment (PPE).

General Information

• Status: Historical
• Publication Date: 14-Jul-2007
• ICS: 29.040.10 - Insulating oils
• Technical Committee: D27 - Electrical Insulating Liquids and Gases
• Drafting Committee: D27.07 - Physical Test

Relations

• Replaces: ASTM D923-97 - Standard Practices for Sampling Electrical Insulating Liquids (Withdrawn 2006)
• Effective Date: 15-Jul-2007
• Replaced By: ASTM D923-15 - Standard Practices for Sampling Electrical Insulating Liquids
• Effective Date: 01-Oct-2015
• Referred By: ASTM D877/D877M-19 - Standard Test Method for Dielectric Breakdown Voltage of Insulating Liquids Using Disk Electrodes
• Effective Date: 15-Jul-2007
• Referred By: ASTM D117-22 - Standard Guide for Sampling, Test Methods, and Specifications for Electrical Insulating Liquids
• Effective Date: 15-Jul-2007
• Referred By: ASTM D7151-15 - Standard Test Method for Determination of Elements in Insulating Oils by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES)
• Effective Date: 15-Jul-2007
• Referred By: ASTM D4059-00(2018) - Standard Test Method for Analysis of Polychlorinated Biphenyls in Insulating Liquids by Gas Chromatography
• Effective Date: 15-Jul-2007
• Referred By: ASTM D971-20 - Standard Test Method for Interfacial Tension of Insulating Liquids Against Water by the Ring Method
• Effective Date: 15-Jul-2007
• Referred By: ASTM D4652-20 - Standard Specification for Silicone Liquid Used for Electrical Insulation
• Effective Date: 15-Jul-2007
• Referred By: ASTM D8180-23 - Standard Specification for Rerefined Mineral Insulating Liquid Used in Electrical Apparatus
• Effective Date: 15-Jul-2007
• Referred By: ASTM D1533-20 - Standard Test Method for Water in Insulating Liquids by Coulometric Karl Fischer Titration
• Effective Date: 15-Jul-2007
• Referred By: ASTM F1799-97(2021) - Standard Guide for Shipboard Generated Waste Management Audits
• Effective Date: 15-Jul-2007
• Referred By: ASTM D8086-20 - Standard Test Method for Determination of Methanol and Ethanol in Electrical Insulating Liquids of Petroleum Origin by Headspace (HS)-Gas Chromatography (GC) Using Mass Spectrometry (MS) or Flame Ionization Detection (FID)
• Effective Date: 15-Jul-2007
• Referred By: ASTM D1816-12(2019) - Standard Test Method for Dielectric Breakdown Voltage of Insulating Liquids Using VDE Electrodes
• Effective Date: 15-Jul-2007
• Referred By: ASTM D2144-07(2021) - Standard Practices for Examination of Electrical Insulating Oils by Infrared Absorption
• Effective Date: 15-Jul-2007
• Referred By: ASTM D2225-20 - Standard Test Methods for Silicone Liquids Used for Electrical Insulation
• Effective Date: 15-Jul-2007

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D923 − 07
StandardPractices 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 July 15, 2007. Published September 2007. Originally
devices.When required, or as a matter of diligence to personal
approved in 1947. Last previous edition approved in 1997 as D923–07. DOI:
10.1520/D0923-07. safety, use personal protective equipment (PPE).
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D923 − 07
2. Referenced Documents 5.1.1 Energized electrical apparatus being sampled must
2 have a positive pressure at the sampling outlet, so as not to
2.1 ASTM Standards:
introduce an air bubble into the apparatus durin
...