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ASTM B786/B786M-08(2018)
Standard Specification for 19 Wire Combination Unilay-Stranded Aluminum Conductors for Subsequent Insulation
Přeložit název
NORMA vydána dne 1.3.2018
Informace o normě:
Označení normy: ASTM B786/B786M-08(2018)
Poznámka: NEPLATNÁ
Datum vydání normy: 1.3.2018
Kód zboží: NS-810002
Počet stran: 6
Přibližná hmotnost: 18 g (0.04 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Kategorie - podobné normy:
Anotace textu normy ASTM B786/B786M-08(2018) :
Keywords:
aluminum alloy conductors, aluminum electrical conductor, combination stranded conductor, electrical conductor, electrical conductor-aluminum, insulated electrical conductor, stranded conductor, unilay stranded conductor, 8000-series aluminum alloy conductors,, ICS Number Code 29.060.20 (Cables)
Doplňující informace
| 1. Scope | ||||||||||||||||||||
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1.1 This specification covers bare combination unilay-stranded conductors made from round wires of aluminum 1350 and 8000 series of aluminum alloys, for insulated conductors for electrical purposes. Aluminum 1350 wires in tempers -H19 (extra hard), -H16 or -H26 (3/4 hard), -H14 or -H24 (1/2 hard), and -H142 or -H242 (1/2 hard) and 8000 series aluminum alloys wires in tempers “0” and H1X or H2X are permitted. These conductors shall be constructed with a central core wire surrounded by two layers of helically laid wires, resulting in an outer diameter equal to the compressed-stranded equivalent conductors. Note 1: For the purpose of this specification, combination
unilay conductor is defined as follows: a central core wire
surrounded by a layer of six helically laid wires of the same
diameter as the core wire with a helically laid outer layer
containing six smaller wires alternated between six wires of the
same diameter as the wires in the layer underneath. Both layers
have a common length and direction of lay (see Fig. 1).
FIG. 1 Cross Section of Conductor 1.1.1 For the purpose of this specification, normal conductor classification (Class AA, A, B, C) is not applicable, as these conductors are intended for subsequent insulation. The descriptive term combination unilay-stranded shall be used in place of conductor classification (Note 2 and Note 3). Note 2: Prior to 1975, aluminum 1350 was designated as EC
aluminum.
Note 3: The aluminum and temper designations conform to ANSI
Standard H35.1. Aluminum 1350 corresponds to Unified Numbering
System A91350 in accordance with Practice E527. Unified Numbering System alloy
designations for 8000 Series aluminum alloys in accordance with
Practice E527 are listed in
Table number 1 of Specification B800.
1.2 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. 1.3 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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| 2. Referenced Documents | ||||||||||||||||||||
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