4 IED operation
In a normal IED use situation, the basic operation includes monitoring and checking
procedures.
• Monitoring measured values
• Checking object states
• Checking function setting parameters
• Checking events and alarms
All basic operations can be performed via the WHMI or with PCM600.
For more information, see PCM600 documentation.
4.1 Web HMI
The WHMI is the only user access service in the protection device. To provide
encryption and secure identification in the communication to the WHMI, the
device supports HTTPS protocol. In this case, plain HTTP connection request is
automatically changed to HTTPS. The WHMI requires a modern web browser, with
support for HTML5 and ECMAScript 6. Note that Internet Explorer is not supported.
Secure communication is required, with TLS v1.2 or v1.3. The WHMI is verified with
latest versions of Microsoft Edge, Firefox and Google Chrome."
WHMI offers several functions:
• Programmable virtual LEDs and event lists
• System supervision
• Parameter settings
• Measurement display
• Disturbance records
• Fault records
• Phasor diagram
• Single line diagram
• Switch control operations
• Report summary
• Configuration back up and restore for merging units
The WHMI can be accessed locally and remotely.
• Locally by connecting the laptop to the IED via the local communication port
• Remotely over LAN/ WAN
4.1.1 Authorization
Four users have been predefined for the WHMI, each with different rights and
default passwords.
IED operation
1MRS758850 D
28 SSC600
Operation Manual
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