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ASTM F1835-97(2007)

(Guide)

Standard Guide for Cable Splicing Installations

Standard Guide for Cable Splicing Installations

SIGNIFICANCE AND USE
Splicing of cables in the shipbuilding industry, both in Navy and commercial undertakings, has been concentrated in repair, conversion, or overhaul programs. However, many commercial industries, including aerospace and nuclear power, have standards defining cable splicing methods and materials that establish the quality of the splice to prevent loss of power or signal, ensure circuit continuity, and avoid potential catastrophic failures. This guide presents cable splicing techniques and hardware for application to commercial and Navy shipbuilding to support the concept of modular ship construction.
This guide resulted from a study that evaluated the various methods of cable splicing, current technologies, prior studies and recommendations, performance testing, and the expertise of manufacturers and shipbuilders in actual cabling splicing techniques and procedures.
The use of this guide by a shipbuilder will establish cabling splicing systems that are: simple and safe to install; waterproof, corrosion, and impact resistant; industry accepted with multiple suppliers available; low-cost methods; and suitable for marine, Navy, and IEC cables.
SCOPE
1.1 This guide provides direction and recommends cable splicing materials and methods that would satisfy the requirements of extensive cable splicing in modular ship construction and offers sufficient information and data to assist the shipbuilder in evaluating this option of cable splicing for future ship construction.
1.2 This guide deals with cable splicing at a generic level and details a method that will satisfy the vast majority of cable splicing applications.
1.3 This guide covers acceptable methods of cable splicing used in shipboard cable systems and provides information on current applicable technologies and additional information that the shipbuilder may use in decision making for the cost effectiveness of splicing in electrical cable installations.
1.4 This guide is limited to applications of 2000 V or less, but most of the materials and methods discussed are adaptable to higher voltages, such as 5-kV systems. The cables of this guide relate to all marine cables, domestic and foreign, commercial or U.S. Navy.
1.5 The values stated in SI units shall be regarded as standard. The values given in parentheses are inch-pound units and 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 application of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
30-Apr-2007
ICS
29.120.20 - Connecting devices
Technical Committee
F25 - Ships and Marine Technology
Drafting Committee
F25.10 - Electrical
Current Stage
Ref Project

Relations

Replaces
ASTM F1835-97(2002) - Standard Guide for Cable Splicing Installations
Effective Date
01-May-2007
Replaced By
ASTM F1835-97(2012)e1 - Standard Guide for Cable Splicing Installations
Effective Date
01-Oct-2012

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ASTM F1835-97(2007) - Standard Guide for Cable Splicing InstallationsASTM F1835-97(2007) - Standard Guide for Cable Splicing Installations
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ASTM F1835-97(2007) - Standard Guide for Cable Splicing Installations
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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: F1835 − 97(Reapproved 2007) An American National Standard
Standard Guide for
1
Cable Splicing Installations
This standard is issued under the fixed designation F1835; 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 Conductors, Hard, Medium-Hard, or Soft
D2671 Test Methods for Heat-Shrinkable Tubing for Elec-
1.1 This guide provides direction and recommends cable
trical Use
splicing materials and methods that would satisfy the require-
2.2 IEEE Standards:
ments of extensive cable splicing in modular ship construction
IEEE 45 Recommended Practice for Electrical Installations
and offers sufficient information and data to assist the ship-
3
on Shipboard
builder in evaluating this option of cable splicing for future
4
ship construction. 2.3 UL Standards:
UL STD 224 Extruded Insulating Tubing
1.2 This guide deals with cable splicing at a generic level
ULSTD 486A Wire Connectors and Soldering Lugs for Use
and details a method that will satisfy the vast majority of cable
with Copper Conductors
splicing applications.
2.4 IEC Standards:
1.3 This guide covers acceptable methods of cable splicing
5
IEC 228 Conductors of Insulated Cables
used in shipboard cable systems and provides information on
2.5 Federal Regulations:
current applicable technologies and additional information that
6
Title 46 Code of Federal Regulations (CFR), Shipping
the shipbuilder may use in decision making for the cost
2.6 Military Specifications:
effectiveness of splicing in electrical cable installations.
MIL-T-16366 Terminals, Electric Lug and Conductor
1.4 This guide is limited to applications of 2000 V or less,
Splices, Crimp-Style
but most of the materials and methods discussed are adaptable
MIL-T-7928 Terminals, Lug, Splices, Conductors, Crimp-
to higher voltages, such as 5-kV systems. The cables of this
Style, Copper
guide relate to all marine cables, domestic and foreign,
commercial or U.S. Navy.
3. Terminology
1.5 The values stated in SI units shall be regarded as
3.1 Definitions of Terms Specific to This Standard:
standard. The values given in parentheses are inch-pound units
3.1.1 adhesive, n—a wide range of materials used exten-
and are for information only.
sively for bonding and sealing; coating added to the inner wall
1.6 This standard does not purport to address all of the
of heat-shrinkable tubing to seal the enclosed area against
safety concerns, if any, associated with its use. It is the
moisture. Adhesive is for pressure retention and load-bearing
responsibility of the user of this standard to establish appro-
applications (see also sealant).
priate safety and health practices and determine the applica-
3.1.2 barrel, n—the portion of a terminal that is crimped;
tion of regulatory limitations prior to use.
designed to receive the conductor, it is called the wire barrel.
3.1.3 butt connector, n—a connector in which two conduc-
2. Referenced Documents
tors come together, end to end, but do not overlap and with
2
2.1 ASTM Standards:
their axes in line.
B8 Specification for Concentric-Lay-Stranded Copper
3.1.4 butt splice, n—device for joining conductors by butt-
ing them end to end.
1
This guide is under the jurisdiction of ASTM Committee F25 on Ships and
Marine Technology and is the direct responsibility of Subcommittee F25.10 on
3
Electrical. Available from Institute of Electrical and Electronics Engineers, Inc. (IEEE),
Current edition approved May 1, 2007. Published June 2007. Originally 445 Hoes Ln., P.O. Box 1331, Piscataway, NJ 08854-1331, http://www.ieee.org.
4
approved in 1997. Last previous edition approved in 2002 as F1835 - 97(2002). Available from Underwriters Laboratories (UL), 333 Pfingsten Rd.,
DOI: 10.1520/F1835-97R07. Northbrook, IL 60062-2096, http://www.ul.com.
2 5
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from the International Electrotechnical Commission, 3 rue de
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Varembe, Case Postale 131, CH-1211, Geneva 20, Switzerland.
6
Standards volume information, refer to the standard’s Document Summary page on AvailablefromStandardizationDocumentsOrderDesk,Bldg.4SectionD,700
the ASTM website. Robbins Ave., Philadelphia, PA 19111–5098, Attn: NPODS.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
F1835 − 97 (2007)
3.1.5 circumferential crimp, n—final configuration of a with multiple suppliers available; low-cost methods; and suit-
barrelmadewhencrimpingdies
...

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5.1 This test method establishes the requirements for a standardized method of evaluating the performance of crimped-type electrical connections having solid or stranded conductors.  
5.2 In order to achieve a successful crimped connection, the crimping tool must deform the material of the crimp barrel or barrel tab(s) around the conductor. As a consequence, the conductor surfaces are placed under compression by the crimp terminal and areas of contact are established between the conductor and the crimp barrel. These areas provide the desired electrical connection. A reliable crimped connection is one that is capable of maintaining the contact between the conductor and crimp barrel so that a stable electrical connection is maintained when it is exposed to the conditions it was designed to endure during its useful life.  
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SCOPE
1.1 This test method establishes the requirements for a standardized method of evaluating the quality of crimped-type electrical connections to solid or stranded conductors. This test method applies to 16-gauge and smaller diameter copper wire, coated or uncoated.  
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1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
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1.3 The methods discussed in this guide apply only to the wire termination, which is the electrical contact interface between the conductor(s) and the terminal. Other aspects important to terminal evaluation, such as the properties and performance of electrical insulation, the effectiveness of strain relief features, and the quality of contact between the terminal and other electrical circuit elements, are not included.  
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5.1 As stated in Terminology B542, contact resistance is comprised of a constriction resistance and a film resistance. When present, the latter of these is usually much greater in value and dominates the contact resistance. For a given contact spot, when the film resistance is zero or negligible the contact resistance for that spot is nearly the same as the constriction resistance and therefore, as a practical matter, has a minimum value which represents a clean metal-to-metal contact spot. As real contact surfaces exhibit varying degrees of roughness, real contacts are necessarily composed of many contact spots which are electrically parallel. In practical cases the clean metal-to-metal contact spots will carry most of the current and the total contact resistance is primarily dependent on the size and number of metallic contact spots present (see Note 1). In addition, acceptably low values of contact resistance are often obtained with true areas of contact being significantly less than the apparent contact area. This is the result of having a large number of small contact spots spread out over a relatively large apparent contact area.
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4.1 Preservation of a conducting surface on electrical contact is vital to the continued functioning of such contacts. Contamination of the surface with insulating layers formed by corrosion processes is one potential hazard. Laboratory testing of contacts in MFG tests is used to assess the effectiveness of design features and materials.  
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4.6 This guide provides test conditions which are to be applied in conjunction with Practice B827 which defines the required test operation and certification procedures, tolerances, and reporting requirements. Where the test specifier requires certifications or tolerances different than those provided in Practice B827, the required certifications or tolerances shall be part of the test specification. Differences from the specifications in Practice B827 shall be reported in the test re...
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1.1 The techniques described in this guide pertain to mixed flowing gas (MFG) tests containing species that are applied to evaluate devices containing electrical contacts such as slip rings, separable connectors, electromechanical relays or switch contacts. These techniques may be relevant to other devices, but it is the responsibility of the user to determine suitability prior to testing.  
1.2 The MFG tests described in this guide are designed to accelerate corrosive degradation processes. These accelerations are designed such that the degradation occurs in a much shorter time period than that expected for such processes in the intended application environment of the device being tested. Application environments can vary continuously from benign to aggressively corrosive. Connectors and contacts within closed electronic cabinets may be affected by an environment of different severity than the environment on the outside of such cabinets. In general, indoor environments are different than outdoor environments. The MFG tests described herein, being discrete embodiments of specific corrosive conditions, cannot be representative of all possible application environments. It is the responsibility of the test specifier to assure the pertinence of a given test condition to the specifier's application condition.  
1.3 The MFG tests described herein are not designed to duplicate the actual intended application environment of the device under test. An extended bibliography that provides information which is useful to test specifiers to assist them in selecting appropriate test methods is included in this guide. The bibliography covers the scope from application condition characterization, single and multiple gas effects, and material and product effects to key application and test variables as well as discussions of atmospheric corrosion processes.  
1.4 The values stated in SI units are to be regarded as standard. No other uni...

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5.1 The principal underlying the test is the sensitivity of the electrical contact interface to temperature and humidity cycling that electrical pressure connection systems experience as a result of usage and installation environment. The temperature cycling may cause micromotion at the mating electrical contact surfaces which can expose fresh metal to the local ambient atmosphere. The humidity exposure is known to facilitate corrosion on freshly exposed metal surfaces. Thus, for those connection systems that do not maintain stable metal-to-metal contact surfaces under the condition of thermal cycling and humidity exposure, repeated sequences of these exposures lead to degradation of the contacting surface indicated by potential drop increase.  
5.2 The test is of short duration relative to the expected life of connections in residential usage. Stability of connection resistance implies resistance to deterioration due to environmental conditions encountered in residential service. Increasing connection resistance as a result of the test exposure indicates deterioration of electrical contact interfaces. Assurance of long term reliability and safety of connection types that deteriorate requires further evaluation for specific specified environments and applications.  
5.3 Use—It is recommended that this test method be used in one of two ways. First, it may be used to evaluate and report the performance of a particular connection system. For such use, it is appropriate to report the results in a summary (or tabular) format such as shown in Section 17, together with the statement “The results shown in the summary (or table) were obtained for (insert description of connection) when tested in accordance with Test Method B812. Second, it may be used as the basis for specification of acceptability of product. For this use, the minimum test time and the maximum allowable increase in potential drop must be established by the specifier. Specification of connection systems in...
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1.3.3 This test method is limited to temperature and water vapor exposure in addition to electrical current as required to measure connection resistance.  
1.3.4 This test method does not evaluate degradation which may occur in residential applications due to exposure of the electrical connection system to additional environmental constituents such as (but not limited to) the following examples:
1.3.4.1 Household chemicals (liquid or gaseous) such as ammonia, bleach, or other cleaning agents.
1.3.4.2 Chemicals as may occur due to normal hobby or professional activities such as photography, painting, sculpture, or similar activities.
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1.3.5 This test method is limited to evaluation of pressure connection systems.  
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 become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product...

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1.4 The guide is organized by habitat type, for example, small ponds and lakes, rivers and streams, and land. It considers the use of dispersants primarily to protect habitats from impact (or to minimize impacts).  
1.5 This guide applies only to freshwater and other inland environments. It does not consider the direct application of dispersants to subsurface waters.  
1.6 In making dispersant use decisions, appropriate government authorities should be consulted as required by law.  
1.7 This guide does not address getting regulatory approval.  
1.8 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.9 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.  
1.10 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.

  • Guide
    3 pages
    English language
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  • Guide
    3 pages
    English language
    sale 15% off