Areva MiCOM P341, Руководство по эксплуатации

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Operation Guide P341/EN O/B11
Introduction CHAPTER 1
MiCOM P341 Page 11/22
Note: *May vary according to relay type/model
the relay’s serial number. The current level of access enabled for an interface can be
determined by examining the 'Access level' cell in the 'System data' column. The
access level for the front panel User Interface (UI) can also be found as one of the
default display options.
The relay is supplied with a default access level of 2, such that no password is
required to change any of the relay settings. It is also possible to set the default
menu access level to either level 0 or level 1, preventing write access to the relay
settings without the correct password. The default menu access level is set in the
‘Password control’ cell which is found in the ‘System data’ column of the menu (note
that this setting can only be changed when level 2 access is enabled).
3.5 Relay configuration
The relay is a multi-function device which supports numerous different protection,
control and communication features. In order to simplify the setting of the relay,
there is a configuration settings column which can be used to enable or disable many
of the functions of the relay. The settings associated with any function that is disabled
are made invisible, i.e. they are not shown in the menu. To disable a function
change the relevant cell in the ‘Configuration’ column from ‘Enabled’ to ‘Disabled’.
The configuration column controls which of the four protection settings groups is
selected as active through the ‘Active settings’ cell. A protection setting group can
also be disabled in the configuration column, provided it is not the present active
group. Similarly, a disabled setting group cannot be set as the active group.
The column also allows all of the setting values in one group of protection settings to
be copied to another group.
To do this firstly set the ‘Copy from’ cell to the protection setting group to be copied,
then set the ‘Copy to’ cell to the protection group where the copy is to be placed. The
copied settings are initially placed in the temporary scratchpad, and will only be used
by the relay following confirmation.
To restore the default values to the settings in any protection settings group, set the
‘Restore defaults’ cell to the relevant group number. Alternatively it is possible to set
the ‘Restore defaults’ cell to ‘All settings’ to restore the default values to all of the
relay’s settings, not just the protection groups’ settings. The default settings will
initially be placed in the scratchpad and will only be used by the relay after they have
been confirmed. Note that restoring defaults to all settings includes the rear
communication port settings, which may result in communication via the rear port
being disrupted if the new (default) settings do not match those of the master station.
3.6 Front panel user interface (keypad and LCD)
When the keypad is exposed it provides full access to the menu options of the relay,
with the information displayed on the LCD.
The
/ , 6
,
8
and
2
keys which are used for menu navigation and setting value
changes include an auto-repeat function that comes into operation if any of these
keys are held continually pressed. This can be used to speed up both setting value
changes and menu navigation; the longer the key is held depressed, the faster the
rate of change or movement becomes.