voltage grade

• 电压等级

voltage grade的用法和样例：

例句

1. Adoption of higher voltage class makes more rigor request for allowable value of switching overvoltage of the transmission lines.
   电网电压等级的提高对输电线路操作过电压允许值提出了更加严格的要求。
2. With the transmission line voltage class escalating, ultra-high speed protection becomes the hot spot in the current researches.
   随着输电线路电压等级的不断升高，基于行波原理的故障测距和超高速线路保护已经成为目前研究的热点。