Siemens 6MD85, Manual

Page: 248 / 1256

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Figure 5-51 Connection of the Input Signal to the Control Circuit of the Circuit-Breaker Closing Coil
Every closure of the circuit breaker is recorded in the process. Therefore, detection is suppressed automatically
in the event of a close command by the internal AREC function of the device.
If external close commands are possible (actuation of the circuit breaker by other devices), which are not
intended to prompt detection of a manual closure (for example, with an external reclosing device), this can be
assured in 2 ways:
•
The input signal is connected in such a way that it is not activated in the event of external close
commands.
•
The external close command is connected to the blocking input
>Block manual close
for manual
closure detection.
Parameter: Action time
•
Recommended setting value
(_:6541:101) Action time
=
0.30 s
In order to ensure independence from manual activation of the input signal, the detection function is
extended for a defined length of time using the parameter
Action time
.
Siemens recommends an action time of
300 ms
.
Parameter: CB open dropout delay
•
Default setting
(_:102) CB open dropout delay
=
0 ms
With the
CB open dropout delay
parameter, you can maintain the effectiveness of the internal indication
CB open
for the set time. If the input signal
>Input
becomes active with a delay after an external close
command, the indication
(_:300) Detected
is issued as long as the dropout delay is effective (see
Figure 5-50 ).
Settings
Addr. Parameter C Setting Options Default Setting
Manual close
_:101 Manual close:Action
time 0.01 s to 60.00 s 0.30 s
_:102 Manual close:CB open
dropout delay 0.00 s to 60.00 s 0.00 s
Information List
No. Information Data Class
(Type) Type
Manual close
_:501 Manual close:>Block manual close SPS I
_:500 Manual close:>Input SPS I
5.6.7.3
5.6.7.4
Function-Group Types
5.6 Function-Group Type Circuit Breaker, 1-/3-Pole
248 SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017