3.3 Web HMI
The WHMI allows secure access to the protection relay via a Web browser. The supported
Web browser versions are Internet Explorer 9.0, 10.0 and 11.0.
WHMI is enabled by default. To disable the WHMI, select Main Menu/
Configuration/HMI/Web HMI mode via the LHMI. Reboot the
protection relay for the change to take effect.
Control operations are not allowed by WHMI.
WHMI offers several functions.
• Programmable LEDs and event lists
• System supervision
• Parameter settings
• Measurement display
• DFR records
• Phasor diagram
• Single-line diagram
The menu tree structure on the WHMI is almost identical to the one on the LHMI.
GUID-29D55F02-2B5A-403A-86B3-A982384761F0-ANSI V1 EN
Figure 7: Example view of the WHMI
The WHMI can be accessed locally and remotely.
1MAC456939-IB D Section 3
620 series overview
620 series ANSI 29
Operation Manual
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