What is the meaning of “ai”, “gi” and the difference between both of them?
Simultaneity factor gi The ratio of outputs of all simultaneously operated consumers to the rated outputs of all connected consumers. The simultaneity factor (for distribution boards only) is directly incorporated into network dimensioning (cable cross sections, protective devices, transformer size).Capacity factor ai (for motors only) The motor capacity factor indicates to which proportion of the rated motor power the motor loads the network. The capacity factor has no impact on the dimensioning of cables and protective devices for the motor circuit. The motor circuit is designed for the nominal motor current. The capacity factor is incorporated into the dimensioning of the higher-level network (cable cross section, protective devices, transformer size).
