7　在考虑负载系数的前提下选用ＦＩ保护装置的额定电流　　负载系数,过去称为同时性因数,它考虑到在供电线路中不可能所有设备同时接通。负载系数总是小于1,且随着用电设备的数量增加而减小。因此,它从用电设备经回路的配电设备至住户连接而逐步衰减。在选用正确的剩余电流保 7 The rated current load factor of the FI protection device, taking into account the load factor, was used to be called the simultaneity factor in the past, considering that it is not possible for all devices to be switched on at the same time in the supply line. The load factor is always less than 1 and decreases as the number of powered devices increases. As a result, it gradually decays from the connected electrical equipment through the loop to the dwelling unit. In the selection of the correct residual current protection