ASTM D5282-05(2020)
(Test Method)Standard Test Methods for Compatibility of Construction Material with Silicone Fluid Used for Electrical Insulation
Standard Test Methods for Compatibility of Construction Material with Silicone Fluid Used for Electrical Insulation
SIGNIFICANCE AND USE
3.1 The magnitude of the changes in the electrical properties of the silicone fluid is of importance in determining the contamination of the fluid by the test specimen.
3.2 Physical and chemical changes in the fluid, such as color and acidity, also indicate solubility or other adverse effects of the test specimen on the fluid.
3.3 Physical changes of the test specimen, such as hardness, swelling, and discoloration, show the effect of the fluid on the test specimen and are used to determine the suitability of the material for use in silicone fluid.
3.4 A material meeting the criteria recommended does not necessarily indicate suitability for use in electrical equipment. Other properties must also be considered. Additionally, certain materials containing additives may meet the requirements of these test methods yet be unsatisfactory when subjected to longer-term evaluations.
3.5 These test methods may be used as a guide for testing the compatibility of materials for silicone fluids other than 50 cSt poly-dimethyl siloxane fluid, but different criteria for judgment may be necessary.
SCOPE
1.1 These test methods cover screening for the compatibility of construction materials with silicone fluid for use in electrical equipment.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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.
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: D5282 − 05 (Reapproved 2020)
Standard Test Methods for
Compatibility of Construction Material with Silicone Fluid
Used for Electrical Insulation
This standard is issued under the fixed designation D5282; 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 D924 Test Method for Dissipation Factor (or Power Factor)
and Relative Permittivity (Dielectric Constant) of Electri-
1.1 Thesetestmethodscoverscreeningforthecompatibility
cal Insulating Liquids
ofconstructionmaterialswithsiliconefluidforuseinelectrical
D974 Test Method for Acid and Base Number by Color-
equipment.
Indicator Titration
1.2 The values stated in SI units are to be regarded as
D1169 Test Method for Specific Resistance (Resistivity) of
standard. No other units of measurement are included in this
Electrical Insulating Liquids
standard.
D1933 Specification for Nitrogen Gas as an Electrical Insu-
1.3 This standard does not purport to address all of the
lating Material
safety concerns, if any, associated with its use. It is the D2129 Test Method for Color of Clear Electrical Insulating
responsibility of the user of this standard to establish appro-
Liquids (Platinum-Cobalt Scale)
priate safety, health, and environmental practices and deter- D2225 TestMethodsforSiliconeLiquidsUsedforElectrical
mine the applicability of regulatory limitations prior to use.
Insulation
1.4 This international standard was developed in accor- D2413 Practice for Preparation of Insulating Paper and
dance with internationally recognized principles on standard-
Board Impregnated with a Liquid Dielectric
ization established in the Decision on Principles for the D3612 Test Method for Analysis of Gases Dissolved in
Development of International Standards, Guides and Recom-
Electrical Insulating Oil by Gas Chromatography
mendations issued by the World Trade Organization Technical D4243 Test Method for Measurement ofAverage Viscomet-
Barriers to Trade (TBT) Committee.
ric Degree of Polymerization of New andAged Electrical
Papers and Boards
2. Referenced Documents
D4559 Test Method for Volatile Matter in Silicone Fluid
D4652 Specification for Silicone Liquid Used for Electrical
2.1 ASTM Standards:
Insulation
D92 Test Method for Flash and Fire Points by Cleveland
D5837 Test Method for Furanic Compounds in Electrical
Open Cup Tester
Insulating Liquids by High-Performance Liquid Chroma-
D445 Test Method for Kinematic Viscosity of Transparent
tography (HPLC)
and Opaque Liquids (and Calculation of Dynamic Viscos-
ity)
3. Significance and Use
D664 Test Method for Acid Number of Petroleum Products
3.1 Themagnitudeofthechangesintheelectricalproperties
by Potentiometric Titration
of the silicone fluid is of importance in determining the
D828 Test Method for Tensile Properties of Paper and
contamination of the fluid by the test specimen.
PaperboardUsingConstant-Rate-of-ElongationApparatus
D877 Test Method for Dielectric Breakdown Voltage of
3.2 Physicalandchemicalchangesinthefluid,suchascolor
Insulating Liquids Using Disk Electrodes
and acidity, also indicate solubility or other adverse effects of
the test specimen on the fluid.
3.3 Physical changes of the test specimen, such as hardness,
These test methods are under the jurisdiction of ASTM Committee D27 on
swelling, and discoloration, show the effect of the fluid on the
Electrical Insulating Liquids and Gasesand are the direct responsibility of Subcom-
mittee D27.06 on Chemical Test.
test specimen and are used to determine the suitability of the
Current edition approved Nov. 1, 2020. Published November 2020. Originally
material for use in silicone fluid.
approved in 1992. Last previous edition approved in 2012 as D5282 – 05(2012).
DOI: 10.1520/D5282-05R20.
3.4 A material meeting the criteria recommended does not
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
necessarily indicate suitability for use in electrical equipment.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Other properties must also be considered.Additionally, certain
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. materials containing additives may meet the requirements of
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D5282 − 05 (2020)
these test methods yet be unsatisfactory when subjected to transformer applications. A realistic core steel ratio for regu-
longer-term evaluations. lators is 5000 cm of surface area per each 400 mL of silicone
fluid.
3.5 These test methods may be used as a guide for testing
6.1.7 Gasket materials shall be tested at a ratio of 13 cm of
the compatibility of materials for silicone fluids other than 50
surface area per 800 mL of silicone fluid.
cSt poly-dimethyl siloxane fluid, but different criteria for
6.1.8 Wire enamels shall be tested at a ratio of 1300 cm of
judgment may be necessary.
surface area per 800 mL of silicone fluid.
6.1.9 Cellulosicinsulationshallbetestedataratio2000cm
4. Apparatus
of surface area per 800 mL of silicone fluid. These test
4.1 Sample-Handling Apparatus:
specimens shall be prepared according to the instructions
4.1.1 Oven, forced draft, adjustable to 120 6 1°C, and a
provided in Practice D2413.
drying oven, adjustable to 105 6 5°C.
6.2 Caution must be taken in obtaining and preparing the
4.1.2 Glass Containers, 1-L, fitted with glass or aluminum
sample to ensure that it is a representative sample of the
foil covers (Note 1).
materialassuppliedbythemanufacturer.Useforcepstohandle
NOTE 1—Other materials have been found to be suitable as covers. the test specimens or adequately protect them from contami-
nation such as skin oils during handling.
4.1.3 Fritted Glass Dispersion Tube (coarse).
6.3 Pre-dry all solid materials for 16 h in an oven at 105 6
4.2 Sample-Testing Apparatus:
5°C. Gasket materials shall not be pre-dried and cellulosic
4.2.1 Tensile Strength—As specified in appropriate test
insulation does not require any further drying as long as it is
method.
prepared according to 6.1.9.
4.2.2 Hardness—As specified in appropriate test method.
6.4 Remove the test specimen from the oven and place in a
4.2.3 Dimensional Change—Micrometer and caliper.
1-Ljar with 800 mLof silicone fluid. Bubble the silicone fluid
4.2.4 Weight Change—Analytical balance.
with dry nitrogen for approximately 10 min through a fritted
glass tube. To minimize contamination, slide the cover on
5. Reagents
quicklywhileremovingthealuminumfoilandthebubbletube.
5.1 Dry Nitrogen Gas, Meeting the requirements of Speci-
Fasten the cover tightly.
fication D1933,Type III with the following exception: the total
NOTE 2—There are certain materials in electrical apparatus for which
hydrocarbon content must by <0.5
...
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