Areva MiCOM P921 - 5. Setting Checks

Technical Guide P92x/EN CM/E11
Commissioning Guide
MiCOM P921-P922-P923 Page 15/28
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5. SETTING CHECKS
The setting checks ensure that all of the relay settings (i.e. the relay’s protection and
control settings and programmable logic equations) for the particular installation
have been correctly applied to the relay.
5.1 Applying the settings to the relay
There are two methods of applying the settings:
· Transfer them from a pre-prepared setting file to the relay using a portable PC
running the appropriate software via the relay’s front RS232 port, located under
the bottom cover, or via the rear communications port.
This method is preferred for transferring function settings as it is much faster and
there is less margin for error.
NOTE: If a setting file has been created for the particular application
and provided on a diskette, this will further reduce the
commissioning time.
· Enter them manually via the relay’s operator interface.
5.2 Checking the relay settings
The settings applied to the relay should be carefully checked to ensure they have
been entered correctly.
There are two methods of checking the settings:
· Extract the settings from the relay using a portable PC running the appropriate
software via the front RS232 port, located under the bottom cover, or via the rear
communications port:
- with a KITZ protocol converter connected if the rear protocol is Kbus,
- with a standard RS232/RS485 converter if the rear protocol is Modbus.
· Compare the settings taken from the relay with the original application-specific
settings (for cases where the customer has only provided a printed copy of the
required settings but a portable PC is available).
· Step through the settings using the relay's operator interface and compare them
with the original settings.