Many engineers mistakenly download and think they are done. This is a costly error. Here is the difference:
If your product is a renewable energy converter, you must comply with both Part 1 and Part 2. The IEC 62477-2 PDF contains the additional requirements on top of Part 1. Iec 62477-2 Pdf
If you only need to check one clause, your local technical university library or a public standards reading room may allow free viewing (but not printing/PDF saving). Many engineers mistakenly download and think they are done