ASTM B836-00 pdf download.Standard Specification for Compact Round Stranded Aluminum Conductors Using Single Input Wire Construction.
10. Mass and Resistance
10.1 The mass and electrical resistance of a unit length of stranded conductor is a function of the length of lay. The approximate weight and electrical resistance may be deter- mined using an increment of 2 %. When greater accuracy is desired, the increment based on the specific lay of the conduc- tor may be calculated (Explanatory Note 4).
10.2 The maximum electrical resistance of a unit length of stranded conductor shall not exceed the nominal dc resistance (Table 1), plus 2 %. 10.2.1 When the dc resistance is measured at other than 20°C, it is to be corrected by using the multiplying factor given in Table 3. 10.3 For conductors to be used in covered or insulated wires or cables, dc resistance measurement may be used instead of the method outlined in Section 13, to determine compliance with this specification; however, the referee method shall be that outlined in Section 13.
11. Workmanship, Finish, and Appearance 11.1 The conductor shall be clean and free of imperfections not consistent with good commercial practice. 12. Requirements of Wires
12.1 Before stranding and compacting, the round input wire used shall meet the requirements of Specifications B230/ B230M, B609/B609M, or B800, whichever is applicable. 12.2 Wire shaped before stranding shall meet the require- ments of the appropriate specification listed in 12.1 except for tensile and elongation requirements and diameter tolerance. For the 1350-H19 temper, the minimum tensile and elongation requirements shall be 96 % of those for round wire of the same nominal area, provided the completed conductor is capable of meeting the requirements of Sections 8 and 16. 12.3 For conductors made from all other alloys and tempers covered in this specification with shaped wires, the tensile requirements for the wires shall be the same as those for round input wires of equal nominal area. The area tolerances for shaped wire of all alloys and tempers shall be such that the finished conductor conforms to Section 13.
13. Variation in Area
13.1 The cross-sectional area of the conductor shall not be less than 98 % of the cross-sectional area as specified in Column 1 of Table 1. 13.2 The manufacturer shall determine the cross-sectional area by Test Method B263. In applying this test method, the increment in weight resulting from stranding may be the applicable value specified in 10.1, or it may be calculated from the measured dimensions of the sample under test. In case of a question regarding area compliance, the actual weight incre- ment due to stranding shall be calculated. N OTE 2—The term “weight” is used in this specification because of established trade usage in place of the technically correct term “mass.” 14. Variation in Diameter 14.1 The average diameter of the conductor shall vary by not more than plus 1 % and minus 2 % from the diameter specified in Table 1.
15. Sampling 15.1 The aluminum cross-sectional area (Section 13) and diameter (Section 14) shall be measured on a sample of completed conductor. At least one sample shall be tested on each size ofconductor on each order ofquantities from 5000 to 100 000 ft (1500 to 30 000 m), and one additional sample shall be tested from each 100 000 ft (30 000 m) thereafter. 15.2 In addition or instead ofthe acceptance testing outlined in 15.1, the sampling may be in accordance with Specification B830 (see Explanatory Note 5). 16. Mechanical and Electrical Tests of SIW Conductors 16.1 Tests for the mechanical and electrical properties of wire composing the conductor shall be made before, but not after, stranding unless otherwise agreed upon by the manufac- turer and the purchaser as provided in 16.2 (Explanatory Note 6).ASTM B836 pdf download