输电电压指的是从发电站发出的电能，一般都要通过输电线路送到各个用电地方。
更高输电电压 higher transmission voltage
输入电源电压 V HZ ; Single Phase AC ; Power Input ; input power voltage
输入电源电压频率 V Hz ; Input power voltage Frequency
输出电电压 Output Voltage
输出电压/电流 Open circuit output voltage/Short circuit output current ; Output Voltage/Current
高[低]电平输出电压 high -level output voltage
输入高电平电压 High Level Input Voltage ; VIH
低电平输出电压 Low Level Output Voltage ; Low Level Output
输入低电平电压 Low Level Input Voltage ; VIL
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断路器在输电电压下的快速开断对输电系统是明显有利的。
Faster interruption of circuit breakers in the transmission voltage offers significant advantage to the transmission system.
电网规模的扩大、输电电压等级的提高，使得继电保护在电力系统中的地位变得更加重要。
With the expansion of power grid and the increase of the transmission voltage grade, the status of relay protection in power system is becoming more and more important.
1949年我国火电最大机组为1万千瓦，输电电压等级最高为220千伏，且全部为外国设计制造。
In 1949, the largest thermal power unit of China was 10 MW and the highest transmission voltage was 220 kV, all designed and made by foreign countries.
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