back-up line
英 [bæk ʌp laɪn]
美 [bæk ʌp laɪn]
网络 备提
双语例句
- Using this fault phase selector, back-up distance relay for double circuit lines on the same tower can distinguish between cross country faults near to the end line and internal phase-phase faults responsibly by set coordination.
同杆并架的后备距离保护应用此选相元件，通过适当的整定配合，能可靠地区分靠近线路末端跨线故障和区内相间故障，提高距离保护I段的正确动作率。