[loauslin-150211-01.tif, 3, en_US]
Figure 5-6
Creation of the Operate Indication of the Voltage-Current 3-Phase Function Group
Application and Setting Notes
Interface to the Circuit-Breaker Function Group
With this, you define which circuit-breaker(s) is/are affected by the protection functions of the Protection func-
tion group. A feasible default setting has already been provided in the application templates. You can find
more information in chapter 2.
Protected Object/Equipment Data (FB General)
The set data applies to all functions in the function group.
Set the protected object/equipment data for your specific application.
Parameter: Rated current
•
Default setting
(_:9451:101) Rated current
=
1000 A
With the
Rated current
parameter, you can set the primary rated current of the protected object or equip-
ment. The
Rated current
parameter is significant for protection functions, as long as the current values
are set in percentages. In this case it is the reference value. In addition it is the reference value for the meas-
ured values in percent.
If the device works with the IEC 61850 protocol, then you change only the setting value of the parameter via
DIGSI 5 and not directly on the device. If you change the setting value directly on the device, then the
IEC 61850 configuration of the metered values can be faulty.
Parameter: Rated voltage
•
Default setting
(_:9451:102) Rated voltage
=
400.00 kV
With the
Rated voltage
parameter, you can set the primary rated voltage of the protected object or equip-
ment. The
Rated voltage
parameter is significant for protection functions, as long as the current values
are set in percentages. In this case it is the reference value. In addition it is the reference value for the meas-
ured values in percent.
If the device works with the IEC 61850 protocol, then you change only the setting value of the parameter via
DIGSI 5 and not directly on the device. If you change the setting value directly on the device, then the
IEC 61850 configuration of the metered values can be faulty.
Parameter: Power-sys. neutral point
•
Default setting
(_:9451:149) Power-sys. neutral point
=
grounded
With the
Power-sys. neutral point
setting, you specify whether the system neutral is
grounded
,
isolated
, or
suppress. coil grounded
(grounded via arc-suppression coil). Currently, the parameter
does not affect any protection function; only if the Automatic reclosing function uses the voltage measure-
ment.
You can find more information in Chapter
.
5.2.3
Function-Group Types
5.2 Function-Group Type Voltage/current 3-Phase
SIPROTEC 5, High-Voltage Bay Controller, Manual
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Summary of Contents for 6MD85
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