光线强度的变化(如光束被遮断或是一般照明的降低)会造成侦测器里产生的电流随著改变。
As the intensity of light varies - by the breaking of a light beam, say, or a decrease in general illumination - the amount of current generated by the sensor changes.
采用故障电流限制器来抑制电网故障时的短路电流是保证断路器遮断容量不致超限的有效方法。
It is an effective approach to ensure the non-exceeding of the breaking capacity of line breaker by adopting fault current limiter to restrain short-circuit current when the grid is in fault.
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