CIM is an open standard. The model is available from CIMUG. The IEC standards body sells standards based on it.
Step by step:
- Join CIMUG.
- Log into their website.
- Under CIM Documents, go to Current CIM Model Drafts (or Past CIM Model Releases).
- Download your choice of model file, e.g. iec61970cim17…
- Unzip.
- Open the Enterprise Architect file (.eap extension).