The LEDs can also be independently configured to bring general indications or
important alarms to the operator's attention.
To provide a description of the button function, it is possible to insert a paper sheet
behind the transparent film next to the button.
2.3 Web HMI
The WHMI allows secure access to the protection relay via a Web browser. When
the
Secure Communication
parameter in the protection relay is activated, the
Web server is forced to take a secured (HTTPS) connection to WHMI using TLS
encryption. The WHMI is verified with Internet Explorer 8.0, 9.0, 10.0 and 11.0.
WHMI is disabled by default.
Control operations are not allowed by WHMI.
WHMI offers several functions.
• Programmable LEDs and event lists
• System supervision
• Parameter settings
• Measurement display
• Disturbance records
• Fault records
• Load profile record
• Phasor diagram
• Single-line diagram
• Importing/Exporting parameters
• Report summary
The menu tree structure on the WHMI is almost identical to the one on the LHMI.
620 series overview
1MRS757644 H
40 620 series
Technical Manual
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