本文件确定了由电机驱动的所有射流风机类型的风机效率分类，电机输入功率范围为5.5 kW至155 kW（根据IEC 60034-30-1，电机额定功率为5.5 kW至150 kW，其尺寸范围可能为500 mm至1600 mm直径）。 本文件不适用于封闭停车场使用的喷气式风扇。 本文件可供立法者或监管机构用于确定未来的节能目标。

This document establishes a classification of fan efficiency for all jet fan types driven by motors with an electrical input power range from 5,5 kW to 155 kW (and this is likely to be in the size range 500 mm to 1600 mm diameter with motors rated between 5,5 kW and 150 kW from IEC 60034-30-1). This document is not applicable to jet fans for use in enclosed car parks. This document can be used by legislators or regulatory bodies for defining future energy saving targets.