ASTM D4872-99(2004)e1

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
1.1 This test method covers the determination of dissipation factor, permittivity (dielectric constant) and ac volume resistivity of wire and cable filling compounds and related materials that are solid at room temperature, but capable of being melted at elevated temperature.
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 hazard statements are given in Section .
1.2 Whenever two sets of values are presented, in different units, the values in the first set are the standard, while those in parentheses are for information only.

General Information

• Status: Historical
• Publication Date: 09-Apr-1999
• ICS: 29.035.01 - Insulating materials in general
• Technical Committee: D09 - Electrical and Electronic Insulating Materials

Relations

• Replaces: ASTM D4872-99 - Standard Test Method for Dielectric Testing of Wire and Cable Filling Compounds
• Effective Date: 10-Apr-1999
• Replaced By: ASTM D4872-99(2010) - Standard Test Method for Dielectric Testing of Wire and Cable Filling Compounds
• 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: 10-Apr-1999
• Referred By: ASTM D4731-13(2020) - Standard Specification for Hot-Application Filling Compounds for Telecommunications Wire and Cable
• Effective Date: 10-Apr-1999

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
´1
Designation:D4872–99 (Reapproved 2004)
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.
´ NOTE—Non-mandatory language was replaced throughout editorially in November 2004.
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
tivityofwireandcablefillingcompoundsandrelatedmaterials 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
1.2 This standard does not purport to address all of the measurements to obtain values from which dissipation factor,
safety concerns, if any, associated with its use. It is the permittivity, and dc volume resistivity are calculated.
responsibility of the user of this standard to establish appro-
5. Significance and Use
priate safety and health practices and determine the applica-
5.1 Dissipationfactor,permittivityanddcvolumeresistivity
bility of regulatory limitations prior to use. Specific hazard
statements are given in Section 7. are properties of communication cable fillers and filler com-
ponents that are controlled in order that the cable’s electrical
1.3 Whenever two sets of values are presented, in different
units, the values in the first set are the standard, while those in performance falls within its design limits. Relatively small
amounts of contaminants, such as polar compounds, water or
parentheses are for information only.
salts, degrade the cable’s electrical properties. Limits on the
2. Referenced Documents
dielectric properties of the cable filling compound are usually
2.1 ASTM Standards: specified by the cable manufacturer, by industry standards or
D150 Test Methods for AC Loss Characteristics and Per- both.
mittivity (Dielectric Constant) of Solid Electrical Insula-
6. Apparatus
tion
D257 Test Methods for DC Resistance or Conductance of 6.1 Specimen Dish and Cover Electrode, as shown in Fig. 1.
Use a gold- or nickel-plated specimen dish and cover electrode
Insulating Materials
D1321 Test Method for Needle Penetration of Petroleum plate to ensure a corrosion resistant, high conductivity surface.
6.1.1 Clean the specimen dish and electrode plate of oxida-
Waxes
D1711 Terminology Relating to Electrical Insulation tion by rinsing in a 5 % hydrochloric acid solution for a
maximum of 5 s, followed by distilled water, isopropyl alcohol
D6054 Practice for Conditioning Electrical Insulating Ma-
terials for Testing and,finally,byalowboilingpetroleumdistillate(naphtha)(see
Section 7). Alternatively, use an ultrasonic cleansing bath.
3. Terminology
Store the dish and cover, wrapped in paper towels, in a
3.1 Definitions—For definitions of terms used in this test desiccator or in an oven maintained at 50 °C.
method, refer to Terminology D1711. 6.2 Dial Comparator, having a minimum travel of 0.4 in.
(10.2 mm) or equivalent.
6.3 Leveling Table, adjustable to 6 1 min of arc. The base
This test method is under the jurisdiction of ASTM Committee D09 on
from a Test Method D1321 penetrometer is satisfactory.
Electrical and Electronic Insulating Materials and is the direct responsibility of
Subcommittee D09.18 on Solid Insulations, Non-Metallic Shieldings, and Cover-
6.4 Glass Syringe, 10.0-mL capacity.
ings for Electrical and Telecommunications Wires and Cables.
6.5 Oven, capable of maintaining the temperature used to
Current edition approved April 10, 1999. Published June 1999. Originally
determine viscosity for the particular compound under test.
approved in 1988. Last previous edition approved in 1994 as D4872 – 94. DOI:
6.6 Q-Meter, or equivalent.
10.1520/D4872-99R04E01.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6.7 Teraohm Meter, or equivalent.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
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