Need help interpreting a specific noise limit? Consult with a certified acoustic engineer or your local IEC national committee member. This article is for informational purposes and does not replace the official standard.
Sound power limits apply to machines with center height ≥ 250 mm. Sound pressure limits apply to smaller machines. Mixing them up is a common misinterpretation. iec 60034-9 pdf
If your application is quieter than the standard’s limit, write “Noise to IEC 60034-9, but maximum LWA = [lower value] dB” in your purchase order. Need help interpreting a specific noise limit
The manufacturer must choose either:
The 2022 edition introduced several updates: write “Noise to IEC 60034-9