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ASTM D4652-20

(Specification)

Standard Specification for Silicone Liquid Used for Electrical Insulation

Standard Specification for Silicone Liquid Used for Electrical Insulation

ABSTRACT
This specification covers silicone fluid, polydimethylsiloxane, for use in transformers, capacitors, and electronic assemblies as an insulating or cooling medium, or both. Physical, electrical, and chemical tests shall be conducted on the specimen to check for quality conformance. The silicone fluid shall conform to the color, flash point, fire point, pour point, refractive index, viscosity, specific gravity, weight of volatile matter, dielectric breakdown, disk electrodes, VDE electrodes, dissipation factor, volume resistivity, neutralization number, water content, and PCB content requirements.
SCOPE
1.1 This specification covers silicone liquid for use in transformers, capacitors, and electronic assemblies as an insulating or cooling medium, or both.  
1.2 Silicone liquid covered by this specification is polydimethylsiloxane having a nominal viscosity of 50 mm2/s at 25°C and a fire point of 340°C or greater. This specification applies only to new silicone liquid. Information on in-service maintenance testing is available in appropriate guides.2  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.4 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.

General Information

Status
Published
Publication Date
31-Oct-2020
ICS
29.035.20 - Plastics and rubber insulating materials
71.100.55 - Silicones
Technical Committee
D27 - Electrical Insulating Liquids and Gases
Drafting Committee
D27.02 - Gases and Non-Mineral Oil Liquids
Current Stage
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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:D4652 −20
Standard Specification for
1
Silicone Liquid Used for Electrical Insulation
This standard is issued under the fixed designation D4652; 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.
1. Scope D923 Practices for Sampling Electrical Insulating Liquids
D924 Test Method for Dissipation Factor (or Power Factor)
1.1 This specification covers silicone liquid for use in
and Relative Permittivity (Dielectric Constant) of Electri-
transformers, capacitors, and electronic assemblies as an insu-
cal Insulating Liquids
lating or cooling medium, or both.
D974 Test Method for Acid and Base Number by Color-
1.2 Silicone liquid covered by this specification is polydim-
Indicator Titration
2
ethylsiloxane having a nominal viscosity of 50 mm /s at 25°C
D1169 Test Method for Specific Resistance (Resistivity) of
and a fire point of 340°C or greater. This specification applies
Electrical Insulating Liquids
only to new silicone liquid. Information on in-service mainte-
D1298 Test Method for Density, Relative Density, or API
2
nance testing is available in appropriate guides.
Gravity of Crude Petroleum and Liquid Petroleum Prod-
1.3 The values stated in SI units are to be regarded as ucts by Hydrometer Method
D1481 Test Method for Density and Relative Density (Spe-
standard. No other units of measurement are included in this
standard. cific Gravity) of Viscous Materials by Lipkin Bicapillary
Pycnometer
1.4 This international standard was developed in accor-
D1533 Test Method for Water in Insulating Liquids by
dance with internationally recognized principles on standard-
Coulometric Karl Fischer Titration
ization established in the Decision on Principles for the
D1807 Test Methods for Refractive Index and Specific
Development of International Standards, Guides and Recom-
Optical Dispersion of Electrical Insulating Liquids (With-
mendations issued by the World Trade Organization Technical
4
drawn 2014)
Barriers to Trade (TBT) Committee.
D1816 Test Method for Dielectric Breakdown Voltage of
2. Referenced Documents Insulating Liquids Using VDE Electrodes
3 D2129 Test Method for Color of Clear Electrical Insulating
2.1 ASTM Standards:
Liquids (Platinum-Cobalt Scale)
D92 Test Method for Flash and Fire Points by Cleveland
D2225 Test Methods for Silicone Fluids Used for Electrical
Open Cup Tester
Insulation
D97 Test Method for Pour Point of Petroleum Products
D2864 Terminology Relating to Electrical Insulating Liq-
D445 Test Method for Kinematic Viscosity of Transparent
uids and Gases
and Opaque Liquids (and Calculation of Dynamic Viscos-
D4052 Test Method for Density, Relative Density, and API
ity)
Gravity of Liquids by Digital Density Meter
D664 Test Method for Acid Number of Petroleum Products
D4059 Test Method for Analysis of Polychlorinated Biphe-
by Potentiometric Titration
nyls in Insulating Liquids by Gas Chromatography
D877 Test Method for Dielectric Breakdown Voltage of
D4559 Test Method for Volatile Matter in Silicone Fluid
Insulating Liquids Using Disk Electrodes
3. Terminology
1
This specification is under the jurisdiction of ASTM Committee D27 on
3.1 Definitions and descriptions of terms specific to this
Electrical Insulating Liquids and Gasesand is the direct responsibility of Subcom-
specification are given in Test Methods D2225 and Terminol-
mittee D27.02 on Gases and Non-Mineral Oil Liquids.
ogy D2864.
Current edition approved Nov. 1, 2020. Published November 2020. Originally
approved in 1992. Last previous edition approved in 2012 as D4652 – 05(2012).
4. Sampling and Testing
DOI: 10.1520/D4652-20.
2
IEEE C57.111, IEEE Guide forAcceptance of Silicone Insulating Fluid and its
4.1 Take all samples in accordance with practices listed in
Maintenance inTransformers is published by the Insulating Fluids Subcommittee of
D923.
the IEEE Power Engineering Society Transformers Committee.
3
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
4
Standards volume information, refer to the standard’s Document Summary page on The last approved version of this historical standard is referenced on
the ASTM website. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D4652−20
TABLE 1 Detail Requirements for Silicone Liquid
Property Limit A
...

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: D4652 − 05 (Reapproved 2012) D4652 − 20
Standard Specification for
1
Silicone FluidLiquid Used for Electrical Insulation
This standard is issued under the fixed designation D4652; 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.
1. Scope
1.1 This specification covers silicone fluidliquid for use in transformers, capacitors, and electronic assemblies as an insulating or
cooling medium, or both.
2
1.2 Silicone fluidliquid covered by this specification is polydimethylsiloxane having a nominal viscosity of 50 cStmm /s at 25°C
and a fire point of 340°C or greater. This specification applies only to new silicone fluid.liquid. Information on in-service
2
maintenance testing is available in appropriate guides.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 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.
2. Referenced Documents
3
2.1 ASTM Standards:
D92 Test Method for Flash and Fire Points by Cleveland Open Cup Tester
D97 Test Method for Pour Point of Petroleum Products
D445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)
D664 Test Method for Acid Number of Petroleum Products by Potentiometric Titration
D877 Test Method for Dielectric Breakdown Voltage of Insulating Liquids Using Disk Electrodes
D923 Practices for Sampling Electrical Insulating Liquids
D924 Test Method for Dissipation Factor (or Power Factor) and Relative Permittivity (Dielectric Constant) of Electrical
Insulating Liquids
D974 Test Method for Acid and Base Number by Color-Indicator Titration
D1169 Test Method for Specific Resistance (Resistivity) of Electrical Insulating Liquids
D1298 Test Method for Density, Relative Density, or API Gravity of Crude Petroleum and Liquid Petroleum Products by
Hydrometer Method
D1481 Test Method for Density and Relative Density (Specific Gravity) of Viscous Materials by Lipkin Bicapillary Pycnometer
D1533 Test Method for Water in Insulating Liquids by Coulometric Karl Fischer Titration
1
This specification is under the jurisdiction of ASTM Committee D27 on Electrical Insulating Liquids and Gasesand is the direct responsibility of Subcommittee D27.02
on Gases and Non-Mineral Oil Liquids.
Current edition approved Oct. 15, 2012Nov. 1, 2020. Published October 2012November 2020. Originally approved in 1992. Last previous edition approved in 20052012
as D4652 – 05.D4652 – 05(2012). DOI: 10.1520/D4652-05R12.10.1520/D4652-20.
2
IEEE C57.111, IEEE Guide for Acceptance of Silicone Insulating Fluid and its Maintenance in Transformers is published by the Insulating Fluids Subcommittee of the
IEEE Power Engineering Society Transformers Committee.
3
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 Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D4652 − 20
4
D1807 Test Methods for Refractive Index and Specific Optical Dispersion of Electrical Insulating Liquids (Withdrawn 2014)
D1816 Test Method for Dielectric Breakdown Voltage of Insulating Liquids Using VDE Electrodes
D2129 Test Method for Color of Clear Electrical Insulating Liquids (Platinum-Cobalt Scale)
D2161 Practice for Conversion of Kinematic Viscosity to Saybolt Universal Viscosity or to Saybolt Furol Viscosity
D2225 Test Methods for Silicone Fluids Used for Electrical Insulation
D2864 Terminology Relating to Electrical Insulating Liquids and Gases
D4052 Test Method for Density, Relative Density, and API Gravity of Liquids by Digital Density Meter
D4059 Test Method for Analysis of Polychlorinated Biphenyls in Insulating Liquids by Gas Chromatography
D4559 Test Method for Volatile Matter in Silicone Fluid
3. Terminology
3.1 Definitions and descriptions of terms spec
...

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5.1 This test method is designed to determine the temperature at which the Wet Blue or Wet White specimen experiences shrinkage. In this test method, shrinkage occurs as a result of hydrothermal denaturation of the collagen protein molecules which make up the fiber structure of the Wet Blue or Wet White. The shrinkage temperature of Wet Blue or Wet White is influenced by many different factors, most of which appear to affect the number and nature of crosslinking interactions between adjacent polypeptide chains of the collagen protein molecules. The value of the shrinkage temperature of Wet Blue or Wet White is commonly used as an indicator of the type of tannage or the degree of tannage, or both, of that particular Wet Blue or Wet White (especially for the more hydrothermally stable tannages such as chrome tannage).
SCOPE
1.1 This test method covers the determination of the shrinkage temperature of all types of Wet Blue and Wet White. The heating medium is water when the shrinkage temperature is at or below 98 °C. The heating medium is a glycerine-water solution when the shrinkage temperature is above 98 °C.  
1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.  
1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 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.

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ASTM
ASTM D8530/D8530M-23(Guide)
Standard Guide for the Selection and Use of Waterstops

SIGNIFICANCE AND USE
4.1 This guide is intended to be used in the selection and installation of waterstops in cast-in-place concrete construction. This guide is intended to assist the building owner, owner’s representative, architect, engineer, contractor, and/or authorized inspector during the specification and installation of waterstops.  
4.2 This guide is applicable to cast-in-place concrete construction. The use of this guide may not be appropriate for installation of waterstops in other types of concrete construction, including but not limited to, pneumatically applied (that is, shotcrete) and precast concrete construction.
SCOPE
1.1 This guide covers the use of waterstops within cast-in-place concrete construction. Waterstops are generally placed within static, non-moving construction joints in concrete to close off the joint to water, which may be under significant hydrostatic pressure. They are used as part of the overall waterproofing strategy for a building or other structure. Expansion and other types of moving joints may require the use of waterstops, which can accommodate the anticipated movement of the structure and are beyond the scope of this guide.  
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents: therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.  
1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 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.

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ASTM
ASTM E2956-23(Guide)
Standard Guide for Monitoring the Neutron Exposure of LWR Reactor Pressure Vessels

SIGNIFICANCE AND USE
4.1 Regulatory Requirements—The USA Code of Federal Regulations (10CFR Part 50, Appendix H) requires the implementation of a reactor vessel materials surveillance program for all operating LWRs. Other countries have similar regulations. The purpose of the program is to (1) monitor changes in the fracture toughness properties of ferritic materials in the reactor vessel beltline6 resulting from exposure to neutron irradiation and the thermal environment, and (2) make use of the data obtained from surveillance programs to determine the conditions under which the vessel can be operated with adequate margins of safety throughout its service life. Practice E185, derived mechanical property data, and (r, θ, z) physics-dosimetry data (derived from the calculations and reactor cavity and surveillance capsule measurements (1) using physics-dosimetry standards) can be used together with information in Guide E900 and Refs. 4, 11-18 to provide a relation between property degradation and neutron exposure, commonly called a “trend curve.” To obtain this trend curve at all points in the pressure vessel wall requires that the selected trend curve be used together with the appropriate (r, θ, z) neutron field information derived by use of this guide to accomplish the necessary interpolations and extrapolations in space and time.  
4.2 Neutron Field Characterization—The tasks required to satisfy the second part of the objective of 4.1 are complex and are summarized in Practice E853. In doing this, it is necessary to describe the neutron field at selected (r, θ, z) points within the pressure vessel wall. The description can be either time dependent or time averaged over the reactor service period of interest. This description can best be obtained by combining neutron transport calculations with plant measurements such as reactor cavity (ex-vessel) and surveillance capsule or RPV cladding (in-vessel) measurements, benchmark irradiations of dosimeter sensor materials, and knowledge of th...
SCOPE
1.1 This guide establishes the means and frequency of monitoring the neutron exposure of the LWR reactor pressure vessel throughout its operating life.  
1.2 The physics-dosimetry relationships determined from this guide may be used to estimate reactor pressure vessel damage through the application of Practice E693 and Guide E900, using fast neutron fluence (E > 1.0 MeV and E > 0.1 MeV), displacements per atom (dpa), or damage-function-correlated exposure parameters as independent exposure variables. Supporting the application of these standards are the E853, E944, E1005, and E1018 standards, identified in 2.1.  
1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 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.

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    12 pages
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  • Guide
    12 pages
    English language
    sale 15% off