ABB Relion 650 Series Applications Manual page 234

Section 15
Basic IED functions
15.4.2 Application
The protection and control IEDs may have a complex configuration with many included functions.
To make the testing procedure easier, the IEDs include the feature that allows individual blocking
of all functions except the function(s) the shall be tested.
This means that it is possible to see when a function is activated or trips. It also enables the user
to follow the operation of several related functions to check correct functionality and to check
parts of the configuration, and so on.
15.4.3 Setting guidelines
There are two possible ways to place the IED in the
the IED is set to normal operation (
in the test mode, the input signal INPUT on the TESTMODE function block must be activated in the
configuration.
Forcing of binary output signals is only possible when the IED is in test mode.
15.5 Change lock CHNGLCK
15.5.1 Identification
Function description
Change lock function
15.5.2 Application
Change lock function CHNGLCK is used to block further changes to the IED configuration once the
commissioning is complete. The purpose is to make it impossible to perform inadvertent IED
configuration and setting changes.
However, when activated, CHNGLCK will still allow the following actions that does not involve
reconfiguring of the IED:
• Monitoring
• Reading events
• Resetting events
• Reading disturbance data
• Clear disturbances
• Reset LEDs
• Reset counters and other runtime component states
• Control operations
• Set system time
• Enter and exit from test mode
• Change of active setting group
228
TestMode = Disabled ), but the functions are still shown being
IEC 61850
identification
CHNGLCK
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TestMode = Enabled " state. This means that if
IEC 60617 ANSI/IEEE C37.2
identification device number
- -
1MRK 505 287-UUS B
M11407-3 v7
M15260-3 v5
GUID-6039E749-18CB-46C4-A4AD-3A8F09378522 v2
GUID-51EEC9C7-8ECF-4546-BC26-326861654340 v4
Busbar protection REB650
Application manual