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ASTM B500/B500M-09
Standard Specification for Metallic Coated Stranded Steel Core for Use in Overhead Electrical Conductors
3 стр.
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Разработчик:
Зарубежные/ASTM
ICS:
29.240.20 Power transmission and distribution lines / Линии электропередачи и распределительные линии
Сборник (ASTM):
02.03 Electrical Conductors / Электрические проводники
Тематика:
Electrical and Magnetic Conductors, Electrical Contacts
Описание
Реферат

This specification covers zinc-coated (galvanized), zinc-aluminum-mischmetal alloy-coated, and aluminum-coated (aluminized) stranded steel wire core inserted for use in aluminum conductors, steel reinforced (ACSR). Prior to stranding, the metallic coated steel wire to be used in the production of the stranded core shall meet all of the requirements of the appropriate specification. Requirements for (1) coated steel wire joints, (2) stranding of the core such as lay length and lay direction, (3) construction of ACSR, and (4) tensile properties of stranded core are detailed. The standard stranded core lengths and methods of determining rated strength and calculating loads are given.

Область применения

1.1 This specification covers 7-wire, 19-wire, 37-wire, and 61-wire zinc-coated (galvanized), zinc-5 % aluminum-mischmetal alloy-coated stranded steel core intended for use in overhead electrical conductors.

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.

Ключевые слова:
metallic coated steel wire strand; steel core wire strand; steel wire strand; AACSR (aluminum-alloy conductors, steei reinforced); Aluminum-coated steel wire--specifications; Aluminum-mischmetal (Al-MM) alloy; Mischmetal alloy-coated steel wire--specifications; Steel-reinforced electrical conductors--specifications; Stranded aluminum electrical conductors--specifications; Zinc-coated steel wire--specifications