ENTSO-E provides some test networks on [its website](https://www.entsoe.eu/Documents/CIM_documents/Grid_Model_CIM/CGMES_v2.4.15_TestConfigurations_v4.0.3.zip). However, not all of these networks are currently supported by CIMDraw, since the following limitations apply:

- Only node-breaker network representations are supported.
- CGMES files containing multiple EQ or DL files are not supported right now.

Therefore, only node-breaker networks without multiple EQ or DL files can be used. In particular, you can use the 'MiniGrid' (e.g. the *CGMES_v2.4.15_MiniGridTestConfiguration_BaseCase_Complete_v3.zip* file) the and 'SmallGrid' (e.g. the *CGMES_v2.4.15_SmallGridTestConfiguration_BaseCase_Complete_v3.0.0.zip* file) node-breaker representations. The 'RealGrid' configuration can be used, but it doesn't contain any diagram information, so that only the tree navigation is possible (or the manual creation of new diagrams). The 'MicroGrid' configurations are bus-branch models, and therefore they will not work properly in CIMDraw.