let-through current meaning in English

允通电流
在短路条件下通过断路器的电流

Let - through current
允通电流
Under the control of a current loop , the system can make advantage of the motor ' s ability of over - current with a maximum limit , as a result , the motor can implement constant - current staring under a maximum let - through current . therefore , the motor ' s rotational speed can rise at a maximum acceleration and reach the given speed within the shortest time
在电流环的控制下，系统在起动的时候能够最大限度的发挥电机的过流能力，使电机以最大允许的起动电流恒流起动，则电机转速可以以最大的加速度上升，并且以最快的时间达到给定转速。