The WHMI allows secure access to the protection relay via a Web browser. The Web server is forced to take a secured (HTTPS) connection to WHMI using TLS encryption. The WHMI is verified with Google Chrome, Mozilla Firefox and Microsoft Edge.
WHMI is disabled by default. To enable the WHMI, select via the LHMI. Reboot the protection relay for the change to take effect.
WHMI offers several functions.
| Main groups | Submenus | Description |
|---|---|---|
| Dashboard | Used to see an overview of the protection relay including status, measurements, single-line diagram and latest events | |
| Device |
Monitoring Information Self-supervision Single Line Diagram Goose and SMV Clear Change Password About |
Used to navigate to monitoring, information, self-supervision, single-line diagram, Goose and SMV or clear pages |
| Measurements |
Measurements Phasor Diagrams |
Used to navigate to the measurements or phasor diagrams |
| Recordings |
Events Disturbance records Fault records Load Profile Record |
Used to view the events, disturbance records, fault records and load profile records |
| Import/Export |
Report Summary Import/Export Settings Parameter List |
Used to export a parameter list or a report summary, and to import and export settings |
| Parameters | Used to view the menu tree structure for the protection relay's setting parameters | |
| Language selection | Used to change the language | |
| Logout | Used to end the session |
The menu tree structure on the WHMI is almost identical to the one on the LHMI.
The WHMI can be accessed locally and remotely.
- Locally by connecting the laptop to the protection relay via the front communication port.
- Remotely over LAN/WAN.