Authorization - ABB RELION 620 Series Technical Manual

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Figure 6: Example view of the WHMI
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.
2.4

Authorization

Four user categories have been predefined for the LHMI and the WHMI, each with
different rights and default passwords.
The default passwords in the protection relay delivered from the factory can be
changed with Administrator user rights.
If the relay-specific Administrator password is forgotten, ABB can provide a one-
time reliable key to access the protection relay. For support, contact ABB. The
recovery of the Administrator password takes a few days.
620 series
Technical Manual
User authorization is disabled by default for LHMI but WHMI always uses
authorization.
620 series overview
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