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ASTM B701/B701M-22e1
Standard Specification for Concentric-Lay-Stranded Self-Damping Aluminum Conductors, Steel Reinforced (ACSR/SD) (Includes all amendments and changes 2/1/2023).
Přeložit název
NORMA vydána dne 1.12.2022
Informace o normě:
Označení normy: ASTM B701/B701M-22e1
Datum vydání normy: 1.12.2022
Kód zboží: NS-1101881
Počet stran: 8
Přibližná hmotnost: 24 g (0.05 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Kategorie - podobné normy:
Anotace textu normy ASTM B701/B701M-22e1 :
This specification covers concentric-lay-stranded self-damping aluminum conductors, steel-reinforced, and its component wires for use as overhead electrical conductors. The tensile strength and elongation requirements of the round and trapezoidal wires shall be the same except for the shape and diameter tolerance. Joints shall not be made in the finished steel wires. The lay factor and direction are specified. The strength and electrical resistance of a complete conductor are calculated. Tests for mechanical and electrical properties of aluminum and steel core wires shall be made before stranding. Gap dimensions shall be measured during fabrication of the conductor.
Keywords:
aluminum electrical conductors, concentric-lay stranded aluminum conductors, concentric-lay stranded aluminum conductors, steel-reinforced, concentric-lay stranded self-damping aluminum conductors, steel reinforced, electrical conductors, electrical conductors—aluminum, self-damping conductors, steel reinforced stranded aluminum conductors, stranded aluminum conductors,, ICS Number Code 29.240.20 (Power transmission and distribution lines)
Doplňující informace
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1.1?This specification covers concentric-lay-stranded self-damping aluminum conductor, steel-reinforced (ACSR/SD), and its component wires for use as overhead electrical conductors (Explanatory Notes 1 and 2). 1.2?The values stated in inch-pound or SI units are to be regarded separately as standard. Each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the specification. For conductor sizes designated by AWG or kcmil, the requirements in SI units have been numerically converted from corresponding values stated or derived in inch-pound units. For conductor sizes designated by SI units only, the requirements are stated or derived in SI units. 1.2.1?For density, resistivity, and temperature, the values stated in SI units are to be regarded as standard. Note 1:?ACSR/SD is designed to control aeolian vibration by
integral damping. The conductors consist of a central core of a
round steel wire or wires surrounded by two layers of trapezoidal
aluminum 1350-H19 wires or two layers of trapezoidal aluminum
1350-H19 wires and one layer of round aluminum 1350-H19 wires
(Fig. 1). The
trapezoidal-wire layers are separated from each other and from the
steel core by two small annular gaps that provide the conductors
self-damping characteristics. The round aluminum wires are in tight
layer contact between themselves and the underlying trapezoidal
wire layer. Different strandings of the same size of conductor are
identified by type, which is the approximate ratio of steel area to
aluminum area, expressed in percent (Table 1 and Table 2).
FIG. 1?Illustrations of Typical ACSR/SD Strandings Note 2:?The aluminum and temper designations conform to ANSI
Standard H 35.1. Aluminum 1350 corresponds to UNS A91350 in
accordance with Practice E527.
1.3?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. 1.4?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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