ASTM D4872-99(2010)

Standard Test Method for Dielectric Testing of Wire and Cable Filling Compounds

SIGNIFICANCE AND USE
Dissipation factor, permittivity and dc volume resistivity are properties of communication cable fillers and filler components that are controlled in order that the cable’electrical performance falls within its design limits. Relatively small amounts of contaminants, such as polar compounds, water or salts, degrade the cable’electrical properties. Limits on the dielectric properties of the cable filling compound are usually specified by the cable manufacturer, by industry standards or both.
SCOPE
Dissipation factor, permittivity and dc volume resistivity are properties of communication cable fillers and filler components that are controlled in order that the cable's electrical performance falls within its design limits. Relatively small amounts of contaminants, such as polar compounds, water or salts, degrade the cable's electrical properties. Limits on the dielectric properties of the cable filling compound are usually specified by the cable manufacturer, by industry standards or both.

General Information

• Status: Historical
• Publication Date: 28-Feb-2010
• ICS: 29.035.01 - Insulating materials in general
• Technical Committee: D09 - Electrical and Electronic Insulating Materials

Relations

• Replaces: ASTM D4872-99(2004)e1 - Standard Test Method for Dielectric Testing of Wire and Cable Filling Compounds
• Effective Date: 01-Mar-2010
• Referred By: ASTM D4731-13(2020) - Standard Specification for Hot-Application Filling Compounds for Telecommunications Wire and Cable
• Effective Date: 01-Mar-2010
• Referred By: ASTM D4732-13(2020) - Standard Specification for Cool-Application Filling Compounds for Telecommunications Wire and Cable
• Effective Date: 01-Mar-2010

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D4872 − 99(Reapproved 2010)
Standard Test Method for
Dielectric Testing of Wire and Cable Filling Compounds
This standard is issued under the fixed designation D4872; 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 4. Summary of Test Method
1.1 This test method covers the determination of dissipation
4.1 Place a measured volume of melted sample, free of
factor, permittivity (dielectric constant) and ac volume resis-
entrapped air, into a level preheated specimen dish. Allow the
tivity of wire and cable filling compounds and related materials
specimen to cool and place primary and secondary electrodes
that are solid at room temperature, but capable of being melted
in uniform contact with the specimen surface. Connect test
at elevated temperature.
leads to the specimen dish and the cover plate electrode; make
measurements to obtain values from which dissipation factor,
1.2 Whenever two sets of values are presented, in different
permittivity, and dc volume resistivity are calculated.
units, the values in the first set are the standard, while those in
parentheses are for information only.
5. Significance and Use
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the 5.1 Dissipationfactor,permittivityanddcvolumeresistivity
responsibility of the user of this standard to establish appro- are properties of communication cable fillers and filler com-
priate safety and health practices and determine the applica- ponents that are controlled in order that the cable’s electrical
bility of regulatory limitations prior to use. Specific hazard performance falls within its design limits. Relatively small
statements are given in Section 7. amounts of contaminants, such as polar compounds, water or
salts, degrade the cable’s electrical properties. Limits on the
2. Referenced Documents
dielectric properties of the cable filling compound are usually
specified by the cable manufacturer, by industry standards or
2.1 ASTM Standards:
both.
D150 Test Methods forAC Loss Characteristics and Permit-
tivity (Dielectric Constant) of Solid Electrical Insulation
6. Apparatus
D257 Test Methods for DC Resistance or Conductance of
Insulating Materials
6.1 Specimen Dish and Cover Electrode, as shown in Fig. 1.
D1321 Test Method for Needle Penetration of Petroleum
Use a gold- or nickel-plated specimen dish and cover electrode
Waxes
plate to ensure a corrosion resistant, high conductivity surface.
D1711 Terminology Relating to Electrical Insulation
6.1.1 Clean the specimen dish and electrode plate of oxida-
D6054 Practice for Conditioning Electrical Insulating Mate-
tion by rinsing in a 5 % hydrochloric acid solution for a
rials for Testing (Withdrawn 2012)
maximum of 5 s, followed by distilled water, isopropyl alcohol
and,finally,byalowboilingpetroleumdistillate(naphtha)(see
3. Terminology
Section 7). Alternatively, use an ultrasonic cleansing bath.
3.1 Definitions—For definitions of terms used in this test
Store the dish and cover, wrapped in paper towels, in a
method, refer to Terminology D1711.
desiccator or in an oven maintained at 50 °C.
6.2 Dial Comparator, having a minimum travel of 0.4 in.
This test method is under the jurisdiction of ASTM Committee D09 on
(10.2 mm) or equivalent.
Electrical and Electronic Insulating Materials and is the direct responsibility of
Subcommittee D09.18 on Solid Insulations, Non-Metallic Shieldings and Coverings 6.3 Leveling Table, adjustable to 6 1 min of arc. The base
for Electrical and Telecommunication Wires and Cables.
from a Test Method D1321 penetrometer is satisfactory.
Current edition approved March 1, 2010. Published August 2010. Originally
ε1
approved in 1988. Last previous edition approved in 2004 as D4872–99(2004) .
6.4 Glass Syringe, 10.0-mL capacity.
DOI: 10.1520/D4872-99R10.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 6.5 Oven, capable of maintaining the temperature used to
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
determine viscosity for the particular compound under test.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
6.6 Q-Meter, or equivalent.
The last approved version of this historical standard is referenced on
www.astm.org. 6.7 Teraohm Meter, or equivalent.
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D4872 − 99 (2010)
11.2 Remove the sample from the oven and st
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