IEC 60034-2-1       Rotating electrical machines -- Part 2-1: Standard methods for determining losses and efficiency from tests (excluding machines for traction vehicles) ISO 3744       Acoustics -- Determination of sound power levels and sound energy levels of noise sources using sound pressure -- Engineering methods for an essentially free field over a reflecting plane IEC 60034-14       Rotating electrical machines – Part 14: Mechanical vibration of certain machines with shaft heights 56 mm and higher – Measurement, evaluation and limits of vibration severity ISO 13347       Industrial fans — Determination of fan sound power levels under standardized laboratory conditions ISO 14695       INDUSTRIAL FANS-METHODS OF MEASUREMENT OF FAN VIBRATION ISO 13349       Fans — Vocabulary and definitions of  categories — Part 1: Vocabulary ISO 14694       INDUSTRIAL FANS-SPECIFICATION FOR BALANCE QUALITY AND VIBRATION LEVELS ISO 21940-11       Mechanical vibration - Rotor balancing - Part 11: Procedures and tolerances for rotors with rigid behaviour GB/T 1236-2017       工业通风机 用标准化风道性能试验