Crest factor

The crest factor, also known as the crest factor, describes the ratio between the peak value (I_max) and the effective value (I_eff) of an alternating current. Expressed mathematically:
Crest factor = I_max / I_eff

In practice, the crest factor is an important parameter for UPS systems, as it provides information on how well a UPS can handle non-linear loads - i.e. devices that generate very high current peaks in the short term, such as servers, switching power supplies or medical devices.