Continuous current is the basis of selection for purchasing car fuse

        Fusing of the Fuse is mainly a process of heat accumulation. Basically, continuous current is the basis for selection. For the current selection of fuse for New energy electric vehicles, the first step is to consider that the fuse can not take action during normal operation, that is, the fuse can not misoperate, which is the starting point and basic point of fuse current.

        Rated current of fuse In=I * K/(Kt * Ke * Kv * Kf * Ka * Kb)，In this formula:
In - rated current of fuse;
I - load rated current;
K - load correction factor;
Kt - temperature correction factor;
Ke - connector thermal conductivity factor;
Kv - air cooling correction factor;
Kf - frequency correction factor;
Ka - altitude correction factor;
Kb - fuse case correction factor;

        a preliminary fuse rated current value can be calculated through the above formula. After the preliminary selection, the fuse rated current value will be modified according to the actual operating condition data. For example, the parameters are corrected by such factors as overload current duration, current size, impulse current duration, current size, etc.