Many countries are members of the IEC. Some national bodies (e.g., ANSI in the US, BSI in the UK, DIN in Germany) offer to standards in their reading rooms. For example:
In this post, we’ll break down what the standard covers and how you can access it for your projects. What is IEC 60034-1? iec 60034-1 pdf free download
Instead, here is a on how to legally and safely access IEC 60034-1, along with a summary of its key contents so you can understand the standard before obtaining it. Many countries are members of the IEC
Defines the IE efficiency classes (IE1 to IE5) we see on modern high-efficiency motors. ANSI in the US
