標準號：IS 3476-1967
發布日期：1968/1/1 12:00:00
實施日期：1999/12/31 12:00:00
適用范圍：This standard covers the requirements for four sizes of trolley and contact wire made of hard-drawn copper and three sizes of trolley and contact wire made of cadmium-copper, used for electric traction purposes (see Tables 1 and 2).TABLE 1 PROPERTIES OF HARD-DRAWN COPPER TROLLEY AND CONTACT WIRE(Clauses 1.1, 6.4, 7.1, 11.1, 11.2, 11.3 and 12.1)Cross- Standard Maximum Minimum Conven- Minimum MinimumSec- Weight Resistance Tensile tional Elon- Numbertional per km per km Strength Limit of gation ofArea at 20°C Elasticity, in 200 mm BendingsMin(1) (2) (3) (4) (5) (6) (7)mm2 kg ohm kg/mm2 kg/mm2 percent80 711.2 0.227 5 38.0 32.5 3 8100 889.0 0.1818 36.5 31.0 3 7107 951.2 0.169 9 36.5 31.0 3 7150 1 334.0 0.121 2 36.5 31.0 3 6Note 1 — The values given in col 2 correspond to the minimum weight of wire.Note 2 — The conventional limit of elasticity indicated in col 5 is for informa-tion only. The conventional limit of elasticity is defined as the maximum tensile load which the tensile test piece may withstand for a period of 10 seconds without undergoing a permanent elongation of more than 0.2 percent of the original gauge length (see 11.1).TABLE 2 PROPERTIES OF CADMIUM-COPPER TROLLEY ANDCONTACT WIRE(Clauses 1.1, 6.4, 7.1, 11.1, 11.2, 11.3 and 12.1)Cross- Standard Maximum Minimum Conven- Minimum MinimumSec- Weight Resistance Tensile tional Elon- Numbertional per km per km Strength Limit of gation ofArea at 20°C Elasticity, in 200 mm BendingsMin(1) (2) (3) (4) (5) (6) (7)mm2 kg ohm kg/mm2 kg/mm2 percent100 894.5 0.211 6 44 37.5 2.5 7107 957.1 0.197 7 44 37.5 2.5 7150 1 342.0 0.141 1 44 37.5 2.5 6Note 1 — The values given in col 2 correspond to the minimum weight of wire.Note 2 — The conventional limit of elasticity indicated in col 5 is for in-formation only. The conventional limit of elasticity is denned as the maximum tensile load which the test piece may withstand for a period of 10 seconds without undergoing a permanent elongation of more than 0.2 percent of the original gauge length (see 11.1).