ASTM B987/B987M-17e1
(Specification)Standard Specification for Carbon Fiber Thermoset Polymer Matrix Composite Core (CFC) for use in Overhead Electrical Conductors
Standard Specification for Carbon Fiber Thermoset Polymer Matrix Composite Core (CFC) for use in Overhead Electrical Conductors
SCOPE
1.1 This specification covers carbon fiber reinforced thermoset matrix composite core strength members for use in reinforcing or supporting overhead electrical conductors.
1.2 This specification covers carbon fiber core diameters from 0.180 to 0.500 in. [4.57 to 12.7 mm], inclusive.
1.3 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 non-conformance with the standard.
1.4 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.
1.5 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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´1
Designation:B987/B987M −17
Standard Specification for
Carbon Fiber Thermoset Polymer Matrix Composite Core
1
(CFC) for use in Overhead Electrical Conductors
This standard is issued under the fixed designation B987/B987M; 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
ε NOTE—Table 2 was corrected editorially in November 2017.
1. Scope D792 Test Methods for Density and Specific Gravity (Rela-
tive Density) of Plastics by Displacement
1.1 This specification covers carbon fiber reinforced ther-
D3916 Test Method for Tensile Properties of Pultruded
moset matrix composite core strength members for use in
Glass-Fiber-Reinforced Plastic Rod
reinforcing or supporting overhead electrical conductors.
D5117 Test Method for Dye Penetration of Solid Fiberglass
1.2 This specification covers carbon fiber core diameters
Reinforced Pultruded Stock
from 0.180 to 0.500 in. [4.57 to 12.7 mm], inclusive.
D5423 Specification for Forced-Convection Laboratory Ov-
ens for Evaluation of Electrical Insulation
1.3 The values stated in either SI units or inch-pound units
are to be regarded separately as standard. The values stated in D7028 TestMethodforGlassTransitionTemperature(DMA
Tg) of Polymer Matrix Composites by Dynamic Mechani-
each system may not be exact equivalents; therefore, each
system shall be used independently of the other. Combining cal Analysis (DMA)
E29 Practice for Using Significant Digits in Test Data to
values from the two systems may result in non-conformance
with the standard. Determine Conformance with Specifications
1.4 This standard does not purport to address all of the
3. Terminology
safety concerns, if any, associated with its use. It is the
3.1 Definitions of Terms Specific to This Standard:
responsibility of the user of this standard to establish appro-
3.1.1 CFC (carbon fiber composite core/thermoset matrix),
priate safety, health, and environmental practices and deter-
n—consisting of continuous carbon fiber tows held together by
mine the applicability of regulatory limitations prior to use.
a polymer matrix where the polymer is specifically a thermo-
1.5 This international standard was developed in accor-
setting polymer. The carbon fiber composite core is protected
dance with internationally recognized principles on standard-
with a galvanic protection barrier layer.
ization established in the Decision on Principles for the
3.1.2 core, n—see CFC.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
3.1.3 design validation tests, n—the purpose of these tests is
Barriers to Trade (TBT) Committee.
to verify the suitability of the CFC design, materials, and
method of manufacturing to meet the requirements in this
2. Referenced Documents
specification. To ensure compliance with this specification,
these tests shall be performed on composite core samples at the
2.1 The following documents of the issue in effect on date
time of manufacture and be repeated whenever the design,
of material purchase form a part of this specification to the
manufacturing method or the materials have changed. The
extent referenced herein.
results of design validation tests are to be recorded and are
2
2.2 ASTM Standards:
considered valid for the whole class of CFC.
3.1.4 DMA (dynamic mechanical analyzer), n—a device
that measures the T of a polymer matrix or composite by
g
1
This specification is under the jurisdiction of ASTM Committee B01 on
subjecting the sample to an oscillating stress while heating the
Electrical Conductors and is the direct responsibility of Subcommittee B01.07 on
Conductors of Light Metals. specimen at a given heating rate.
Current edition approved Feb. 1, 2017. Published March 2017. Originally
3.1.5 galvanic protection barrier layer, n—a layer that
approved in 2014. Last previous edition approved in 2014 as B987/B987M – 14.
prevents the carbon fiber of the composite core from making
DOI: 10.1520/B0987/B0987M-17E01.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact with the aluminum strands used in the conductor.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3.1.6 glass transition temperature (T ), n—a temperature
Standards volume information, refer to the standard’s Document Summary page on g
the ASTM website. where the polymer matrix properties transition from a hard,
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
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B987/B987M−17
glassystatetoarubberystate.T
...
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.
´1
Designation: B987/B987M − 17 B987/B987M − 17
Standard Specification for
Carbon Fiber Thermoset Polymer Matrix Composite Core
1
(CFC) for use in Overhead Electrical Conductors
This standard is issued under the fixed designation B987/B987M; 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
ε NOTE—Table 2 was corrected editorially in November 2017.
1. Scope
1.1 This specification covers carbon fiber reinforced thermoset matrix composite core strength members for use in reinforcing
or supporting overhead electrical conductors.
1.2 This specification covers carbon fiber core diameters from 0.180 to 0.500 in. [4.57 to 12.7 mm], inclusive.
1.3 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 non-conformance with the standard.
1.4 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.5 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
2.1 The following documents of the issue in effect on date of material purchase form a part of this specification to the extent
referenced herein.
2
2.2 ASTM Standards:
D792 Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement
D3916 Test Method for Tensile Properties of Pultruded Glass-Fiber-Reinforced Plastic Rod
D5117 Test Method for Dye Penetration of Solid Fiberglass Reinforced Pultruded Stock
D5423 Specification for Forced-Convection Laboratory Ovens for Evaluation of Electrical Insulation
D7028 Test Method for Glass Transition Temperature (DMA Tg) of Polymer Matrix Composites by Dynamic Mechanical
Analysis (DMA)
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 CFC (carbon fiber composite core/thermoset matrix), n—consisting of continuous carbon fiber tows held together by a
polymer matrix where the polymer is specifically a thermosetting polymer. The carbon fiber composite core is protected with a
galvanic protection barrier layer.
3.1.2 core, n—see CFC.
1
This specification is under the jurisdiction of ASTM Committee B01 on Electrical Conductors and is the direct responsibility of Subcommittee B01.07 on Conductors
of Light Metals.
Current edition approved Feb. 1, 2017. Published March 2017. Originally approved in 2014. Last previous edition approved in 2014 as B987/B987M – 14. DOI:
10.1520/B0987/B0987M-17.10.1520/B0987/B0987M-17E01.
2
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 ----------------------
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B987/B987M − 17
3.1.3 design validation tests, n—the purpose of these tests is to verify the suitability of the CFC design, materials, and method
of manufacturing to meet the requirements in this specification. To ensure compliance with this specification, these tests shall be
performed on composite core samples at the time of manufacture and be repeated whenever the design, manufacturing method or
the materials have changed. The results of design validation tests are to be recorded and are considered valid for the whole class
of CFC.
3.1.4 DMA (dynamic mechanical analyzer), n—a device that measures the T of a polymer matrix or composite by subjecting
g
the sample to an oscillating stress while heating the specimen at a given heating rat
...
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