Areva MiCOM P341, Руководство по эксплуатации

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P341/EN O/B11 Operation Guide
CHAPTER 3 Commissioning and
Page 18/80 Maintenance
MiCOM P341
Menu Cell
Corresponding VT Ratio
(in ‘VT and CT RATIO
column (0A) of menu)
[021A: MEASUREMENTS 1, VAN Magnitude]
[021C: MEASUREMENTS 1, VBN Magnitude]
[021E: MEASUREMENTS 1, VCN Magnitude]
[0A01: Main VT Primary]
[0A02: Main VT Sec'y)]
[0220: MEASUREMENTS 1, VN Measured Mag]
[0A03: C/S VT Primary]
[0A04: C/S VT Sec'y]
Table 12: VT ratio settings
5. SETTING CHECKS
The setting checks ensure that all of the application-specific relay settings (i.e. both
the relay’s function and programmable scheme logic settings) for the particular
installation have been correctly applied to the relay.
If the application-specific settings are not available, ignore sections 5.1 and 5.2.
Note: The trip circuit should remain isolated during these checks to prevent
accidental operation of the associated circuit breaker.
5.1 Apply application-specific settings
There are two methods of applying the settings:
• Transferring 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 access cover, or rear communications port (with a KITZ protocol
convertor connected). This method is preferred for transferring function settings
as it is much faster and there is less margin for error. If programmable scheme
logic other than the default settings with which the relay is supplied are to be used
then this is the only way of changing the settings.
If a setting file has been created for the particular application and provided on a
diskette, this will further reduce the commissioning time and should always be the
case where application-specific programmable scheme logic is to be applied to
the relay.
• Enter them manually via the relay’s operator interface. This method is not
suitable for changing the programmable scheme logic.
5.2 Check application-specific settings
The settings applied should be carefully checked against the required application-
specific settings to ensure they have been entered correctly. However, this is not
considered essential if a customer-prepared setting file on diskette has been
transferred to the relay using a portable PC.
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 access cover, or rear
communications port (with a KITZ protocol convertor connected). Compare the
settings transferred from the relay with the original written application-specific
setting record. (For cases where the customer has only provided a printed copy of
the required settings but a portable PC is available).