其基本保护采用零序过电压保护，动作时间采用反时限特性；
The inverse time delay characteristic is adopted by the basic zero-sequence over-voltage protection.
过载保护：在1.2倍额定电流时启动，采用反时限特性动作；
Overload protection:Start at 1.2times of rated current, adopt inverse time lag characteristic action;
反时限距离保护是解决近范围快速动作与保护范围末端可靠动作之间矛盾的最好策略。
The distance protection with inverse time characteristic is the best choice to solve the conflict between fast trip near the protecting relay and reliable trip at the end of protection zone.
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