ASTM D176-07

Standard Test Methods for Solid Filling and Treating Compounds Used for Electrical Insulation

SIGNIFICANCE AND USE
The melting point is useful in selecting a filling or treating compound that will not flow at the operating temperature of the device in which it will be used. It is also essential that it shall not be so high as to injure the insulation at the time of pouring. This test method is suitable for specification, classification, and for control of product uniformity.
SCOPE
1.1 These test methods cover physical and electrical tests for solid filling and treating compounds used for electrical insulation which are fusible to a liquid without significant chemical reaction. Compounds that are converted to the solid state by polymerization, condensation, or other chemical reaction are not included in these test methods.
1.2 These test methods are designed primarily for asphaltic or bituminous compounds, waxes, and fusible resins, or mixtures thereof, although some of these methods are applicable to semisolid types such as petrolatums. Special methods more suitable for hydrocarbon waxes are contained in Test Methods D 1168.
1.3 Provide adequate ventilation when these tests involve heating.
1.4 The test methods appear in the following sections:p>1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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. For specific hazard statements, see and .Note 1
There is no similar or equivalent IEC or ISO standard.

General Information

• Status: Historical
• Publication Date: 30-Apr-2007
• ICS: 29.035.01 - Insulating materials in general
• Technical Committee: D09 - Electrical and Electronic Insulating Materials
• Drafting Committee: D09.01 - Electrical Insulating Products

Relations

• Replaces: ASTM D176-00 - Standard Test Methods for Solid Filling and Treating Compounds Used for Electrical Insulation
• Effective Date: 01-May-2007
• Replaced By: ASTM D176-07(2012) - Standard Test Methods for Solid Filling and Treating Compounds Used for Electrical Insulation (Withdrawn 2013)
• Effective Date: 01-Apr-2012
• Referred By: ASTM D1711-22 - Standard Terminology Relating to Electrical Insulation
• Effective Date: 01-May-2007
• Referred By: ASTM D3755-20 - Standard Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials Under Direct-Voltage Stress
• Effective Date: 01-May-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
An American National Standard
Designation:D176–07
Standard Test Methods for
Solid Filling and Treating Compounds Used for Electrical
1
Insulation
This standard is issued under the fixed designation D176; 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* responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
1.1 These test methods cover physical and electrical tests
bility of regulatory limitations prior to use. For specific hazard
for solid filling and treating compounds used for electrical
statements, see 12.1 and 31.5.
insulation which are fusible to a liquid without significant
chemical reaction. Compounds that are converted to the solid
NOTE 1—There is no similar or equivalent IEC or ISO standard.
state by polymerization, condensation, or other chemical reac-
2. Referenced Documents
tion are not included in these test methods.
2
1.2 These test methods are designed primarily for asphaltic
2.1 ASTM Standards:
or bituminous compounds, waxes, and fusible resins, or mix-
D5 Test Method for Penetration of Bituminous Materials
tures thereof, although some of these methods are applicable to
D6 Test Method for Loss on Heating of Oil and Asphaltic
semisolid types such as petrolatums. Special methods more
Compounds
suitable for hydrocarbon waxes are contained in Test Methods
D70 Test Method for Density of Semi-Solid Bituminous
D1168.
Materials (Pycnometer Method)
1.3 Provide adequate ventilation when these tests involve
D71 Test Method for Relative Density of Solid Pitch and
heating.
Asphalt (Displacement Method)
1.4 The test methods appear in the following sections:
D88 Test Method for Saybolt Viscosity
Test Method Sections D92 Test Method for Flash and Fire Points by Cleveland
Open Cup Tester
Electrical Tests:
D127 Test Method for Drop Melting Point of Petroleum
A-C Loss Characteristics and Permittivity (Dielectric Constant) 51-54
Dielectric Strength 42-45 Wax, Including Petrolatum
Volume Resistivity-Temperature Characteristics 46-49
D149 Test Method for Dielectric Breakdown Voltage and
Physical Tests:
Dielectric Strength of Solid Electrical Insulating Materials
Coefficient of Expansion or Contraction 22-41
Flash and Fire Points 9 and 10 at Commercial Power Frequencies
Loss on Heating 11 and 12
D150 Test Methods for AC Loss Characteristics and Per-
Melting Point 5 and 6
mittivity (Dielectric Constant) of Solid Electrical Insula-
Penetration 15 and 16
Softening Point 7 and 8
tion
Specific Gravity 17-21
D257 Test Methods for DC Resistance or Conductance of
Viscosity 13 and 14
Insulating Materials
1.5 The values stated in SI units are to be regarded as the
D937 Test Method for Cone Penetration of Petrolatum
standard. The values given in parentheses are for information
D1168 Test Methods for Hydrocarbon Waxes Used for
only.
Electrical Insulation
1.6 This standard does not purport to address all of the
D1711 Terminology Relating to Electrical Insulation
safety concerns, if any, associated with its use. It is the
1
These methods of testing are under the jurisdiction of ASTM Committee D09
on Electrical and Electronic Insulating Materials and are the direct responsibility of
Subcommittee D09.01 on Electrical Insulating Varnishes, Powders and Encapsulat-
2
ing Compounds. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved May 1, 2007. Published June 2007. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 1923. Last previous edition approved in 2000 as D176 – 00. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D0176-07. the ASTM website.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D176–07
E28 Test Methods for Softening Point of Resins Derived 4. Sampling and Conditioning
from Naval Stores by Ring-and-Ball Apparatus
4.1 Due to the diverse nature of the compounds and the
E102 Test Method for Saybolt Furol Viscosity of Bitumi-
various forms and packages commercially available, no stan-
nous Materials at High Temperatures
dard methods of sampling have been established. When the
3. Terminology
sample is in the form of cakes or ingots, a representative
sample is usually secured by breaking or cutting a transverse
3.1 Definitions:
3.1.1 dielectric strength, n—the voltage gradient at which sectionfromthemiddleofthecak
...