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使用YT(XT)型调速器的小型水电站,绝大多数没有独立的直流系统。因此,调速器压力油装置的电接点压力表接点直接串入380伏(或220伏)的交流回路中如图所示. 由于小电站负荷变化频繁,至使调速器油压装置的油泵启动也频繁。当接点容量较小的电接压力表触点DY_(-1)、DY_(-2)频繁动作时,很容易使接触烧毁。我们知道,YT(XT)型调速器上另一只水银接点压力信号器具有一对容量较大的水银接点(该接点分别装在封闭的玻璃泡内),而该表只有在油到达最低允许值时才动作,故使用次数很少。如果将该表与电接点压力
Most small hydropower stations using YT (XT) governors do not have separate DC systems. Therefore, the governor pressure oil device electrical contact pressure gauge contacts directly into the 380-volt (or 220-volt) AC circuit shown in Figure As the small power plant load changes frequently to governor hydraulic device pump Start frequently. When the contact capacity of the smaller electrical contact pressure gauge contacts DY _ (- 1), DY _ (- 2) frequent movements, it is easy to contact the burned. We know that another mercury contact pressure indicator on a YT (XT) governor has a pair of larger mercury contacts (the contacts are housed in a closed glass bulb, respectively) and the meter only operates when the oil reaches a minimum allowable Only when the value action, so the use of the few. If the table and the electrical contact pressure