Siemens 6MD85, Manual

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group interface. This connection is also necessary if the Automatic reclosing function with adaptive dead
time function type is used.
Parameter: I Reference for % Values
•
Default setting
(_:2311:101) Rated normal current
=
1000 A
With the
Rated normal current
parameter, you set the primary current which serves as a reference for all
current-related % values within the Circuit-breaker function group. This applies both for operational measured
values and for setting values in %.
Enter the primary rated current of the protected object here.
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: V Reference for % Values
•
Default setting
(_:2311:102) Rated voltage
=
400 kV
With the
Rated voltage
parameter, you set the primary voltage, which serves as a reference for all voltage-
related % values within the Circuit-breaker function group. This applies both for operational measured values
and for setting values in %.
Enter the primary rated voltage of the protected object (for example, the line) here.
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: Current Threshold Circuit Breaker Open
•
Default setting
(_:2311:112) Current thresh. CB open
=
0.10 A
With the
Current thresh. CB open
parameter, you specify the threshold value below which the circuit-
breaker pole or the circuit breaker is recognized as open.
Set the
Current thresh. CB open
parameter so that the current measured when the circuit-breaker pole
is open will certainly fall below the parameterized value. If parasitic currents (for example, due to induction)
are excluded with the line deactivated, you can make a secondary setting of the value with a high degree of
sensitivity, to
0.05 A
for example.
If no special requirements exist, Siemens recommends retaining the setting value of
0.10 A
for secondary
purposes.
Settings
Addr. Parameter C Setting Options Default Setting
Ref. for %-values
_:2311:101 General:Rated normal
current 0.20 A to 100000.00 A 1000.00 A
_:2311:102 General:Rated voltage 0.20 kV to 1200.00 kV 400.00 kV
Breaker settings
_:2311:112 General:Current thresh.
CB open 1 A @ 100 Irated 0.030 A to 10.000 A 0.100 A
5 A @ 100 Irated 0.15 A to 50.00 A 0.50 A
1 A @ 50 Irated 0.030 A to 10.000 A 0.100 A
5 A @ 50 Irated 0.15 A to 50.00 A 0.50 A
1 A @ 1.6 Irated 0.001 A to 1.600 A 0.100 A
5 A @ 1.6 Irated 0.005 A to 8.000 A 0.500 A
_:2311:136 General:Op. mode BFP
•
unbalancing
•
I> query
unbalancing
5.5.4
Function-Group Types
5.5 Function-Group Type Circuit Breaker, 3-Pole
212 SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017