ABB Relion 620 Series - Setting Passwords; Identifying Relay Application Problems

1.
Select Main menu/Configuration/General/Factory setting and press .
2.
Set the value with
or and press .
3.
Confirm by selecting Yes with or and press .
The protection relay restores the factory settings and restarts. Restoring takes 1...3
minutes. Confirmation of restoring the factory settings is shown on the display a few
seconds, after which the relay restarts.
Avoid the unnecessary restoring of factory settings, because all the
parameter settings that are written earlier to the relay will be overwritten
with the default values. During normal use, a sudden change of the
settings can cause a protection function to trip.
To restore factory settings from bootloader mode, press ESC + KEY
simultaneously for 5 seconds.
7.3.3 Setting passwords
If user authorization is off or the user is logged in as an administrator, user passwords can
be set via the LHMI or WHMI or with PCM600.
For more information, see User authorization.
1. Select Main menu/Configuration/Authorization/Passwords.
2.
Select the password to be reset with or .
3.
Press , change the password with or and press again.
4. Repeat steps 2 and 3 to set the rest of the passwords.
7.3.4 Identifying relay application problems
• Check that the function is on.
• Check the blocking.
• Check the mode.
• Check the measurement value.
• Check the connection to trip and DFR functions.
• Check the channel settings.
Section 7 1MAC456939-IB D
Troubleshooting
108 620 series ANSI
Operation Manual