For a verified download and proper installation of Siemens DIGSI 4.91, you should prioritize using official Siemens Industry Online Support
- Visit the official Siemens website and navigate to the software downloads section.
- Search for "DIGSI 4.91" and select the correct version and language.
- Fill out the required registration form and agree to the terms and conditions.
- Download the software package (approximately [insert size] MB).
- Extract the downloaded files to a local directory.
- Run the installation program and follow the on-screen instructions.
- Extract the zip file: Unzip the downloaded file to a directory on your computer.
- Run the installer: Execute the installation file (usually "setup.exe" or "DIGSI4.91.exe").
- Follow the installation wizard: Complete the installation process by following the on-screen instructions.
- Activate the software: You may need to activate the software using a license file or a dongle.
Download Format: The download version typically contains the core program but may require separate device driver downloads for specific relay models like 6MD, 7SA, or 7SJ. Key Features of DIGSI 4.91
Important Distinction: DIGSI 4.91 is not DIGSI 5. DIGSI 5 is a completely different architecture for newer relays. If you are maintaining a brownfield substation built between 2005 and 2018, DIGSI 491 is likely your target.
The software is typically available as a full version download or on a CD from Siemens. Trial Version: Newer versions like DIGSI 4 V4.95 can be used as a 30-day trial
: You can download major releases and patches directly from the Siemens Support Portal Siemens Software Center