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ASTM B47-95a(2017)
Standard Specification for Copper Trolley Wire (Includes all amendments and changes 4/24/2017).
NORMA vydaná dňa 1.4.2017
Informácie o norme:
Označenie normy: ASTM B47-95a(2017)
Dátum vydania normy: 1.4.2017
Kód tovaru: NS-681007
Počet strán: 5
Približná hmotnosť: 15 g (0.03 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Kategórie - podobné normy:
Anotácia textu normy ASTM B47-95a(2017) :
This specification covers round and grooved hard-drawn copper- and silver-bearing copper trolley wires. Copper materials shall be of such quality and purity that the finished product shall have the properties and characteristics prescribed herein. All wires shall conform to the following physical properties: tensile strength, elongation, dimensions, density, and electrical resistivity. Three twist tests shall be made on round wires between the holders of the testing machine for the purpose of determining developing defects that may be prejudicial to the life of the trolley wire. Wires that do not withstand at least nine twists without breaking shall not be considered satisfactory. The twist test shall be omitted for grooved wires. All wires shall be of uniform size, shape, and quality throughout, and shall be free from all scale, flaws, splits, and scratches not consistent with the best commercial practice.
Keywords:
ICS Number Code 29.280 (Electric traction equipment)
Doplňujúce informácie
| 1. Scope | ||||
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1.1 This specification covers round and grooved hard-drawn copper and silver-bearing copper trolley wire. 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered 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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