Profile: Armstrong Power Systems, LLC offers standby and prime electric generators. Our A65CU diesel generator sets feature rugged 4 cycle heavy-duty diesel engine, with swirl intake ports for low fuel consumption and good transient response. Our A4 A400CU OCU diesel generators have low reactance, 2/3 pitch, class H insulation and minimize voltage distortion when powering non-linear loads. We also offer electronic transfer switches, metal enclosures and tanks.