This standard PD IEC TS 62257-9-7:2019 Renewable energy and hybrid systems for rural electrification is classified in these ICS categories:
27.160 Solar energy engineering
This part of IEC 62257, which is a technical specification, specifies the criteria for selecting and sizing inverters suitable for different off-grid applications integrating solar as an energy source.
As well as off-grid system, this document can also apply to inverters where a utility grid connection is available as a backup for charging batteries, but it is not intended to cover applications in which inverters synchronize and inject energy back into a utility grid, even though this capability may incidentally be a part of the functionality of the inverters.