This SAE Aerospace Standard (AS) establishes the minimum performance standards for equipment used as secondary alternating current (AC) electrical power sources in aerospace electric power systems. Purpose The purpose of this document is to define the guidelines and minimum performance test standards to be met by static electric power frequency converters designed to operate from primary electric power systems. The tests specified herein provide a laboratory means to determine the performance and reliability characteristics of electric power frequency converters under electrical and environmental conditions representative of those encountered in actual aerospace applications. Field of Application Static electric power frequency converter equipment whose initial application is to provide three phase or single phase AC power of a desired frequency by converting nominal AC power of a different frequency. The frequency converter shall be designed to provide AC power for aerospace utilization systems and equipment@ but not limited to aerospace use.