The temperature characteristics and current conducting ability of horizontally curved conductors

According to experimental results, the temperature on a horizontally curved conductor proved to be higher than that on a straight conductor. The temperature deviation increased with the current ratio cr increasing or the curved angle and curved radius 0 decreasing, where cr is the critical melting current. In a previous paper, the critical melting current cr of horizontal, straight copper conductors in the air can be expressed by the following equation: cr = 2 21 103 1 505 (A) (1) (70 A cr 2500 A 0 1 cm 1 cm —diameter). Therefore, if the maximum surface temperature is settled for conductors of the same diameter and manufactured of the same material, the current conducted by a curved conductor was smaller than that conducted by a straight one. When the curved angle was 45 and current ratio cr was 38.5%, the current decrease deviation was approximately 10%.