3.1.8stored energy modeoperation of

3.1.8stored energy modeoperation of the UPS when supplied by the following conditions:– primary power is disconnected or is out of a given tolerance;– battery is being discharged;– load is within the given range;– output voltage is within the given tolerance3.2 UPS electrical ratings3.2.1rated voltageinput or output voltage (for three-phase supply, the phase-to-phase voltage) as declared bythe manufacturer3.2.2rated voltage rangeinput or output voltage range as declared by the manufacturer, expressed by its lower andupper rated voltages3.2.3rated currentinput or output current of the UPS as declared by the manufacturerNOTE See 4.7.2.3.2.4rated peak withstand currentIpkvalue of peak short-circuit current, declared by the UPS manufacturer, that can be withstoodunder specified conditionsNOTE For the purpose of this standard, Ipk refers to the initial asymmetric peak value of the prospective testcurrent listed in Table 33.2.5rated short-time withstand currentIcwr.m.s. value of short-time current, declared by the UPS manufacturer, that can be carriedwithout damage under specified conditions, defined in terms of current and time3.2.6rated conditional short-circuit currentIccr.m.s. value of prospective short-circuit current, declared by the UPS manufacturer, thatcan be withstood for the total operating time (clearing time) of the short-circuit protectivedevice (SCPD) under specified conditionsNOTE The short-circuit protective device may form an integral part of the UPS or may be a separate unit.3.2.7low impedance pathpath containing devices that for UPS load purposes present negligible impedance such ascabling, switching devices, protecting devices and filtering devicesNOTE The devices in a low impedance path may under short-circuit conditions present current limitingcharacteristics. Examples include current limiting fuses, current limiting circuit-breakers, transformers andinductors.