Siemens 6MD85, Manual

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Figure 5-26 Recommended Analysis of the Circuit-Breaker Switch Position when Used as a Protection and
Electronic Control Unit
The following diagram shows the recommended routing, in which H stands for active with voltage.
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Figure 5-27 Routing for Acquisition of the Circuit-Breaker Switch Position via 2 Auxiliary Contacts
The device can also function without the analysis from the circuit-breaker auxiliary contacts, that is, routing of
the auxiliary contacts is not absolutely necessary. However, this is a requirement for control functions.
Parameter: Output Time
•
Default setting
(_:101) Output time
=
0.10 s
The
Output time
parameter acts on the signals for tripping, opening, and closing of the circuit breaker.
!
CAUTION
Do not set a time that is too short.
If you set a time that is too short, there is a danger that the device contacts will interrupt the control
circuit. If this happens, the device contacts will burn out.
²
Set a time that is long enough to ensure that the circuit breaker reliably reaches its final position
(open or closed) after a control operation.
Parameter: Indicat. of breaking values
•
Default setting
(_:105) Indicat. of breaking values
=
always
With the
Indicat. of breaking values
parameter, you specify whether the measured values are to be
reported if the circuit breaker is opened via the control function.
Parameter Value Description
always
With this setting, the measured values are reported if the circuit breaker is
opened either via the control function or via the trip command of a protec-
tion function.
with trip
With this setting, the measured values are only reported if the circuit
breaker is opened via the trip command of a protection function.
Function-Group Types
5.5 Function-Group Type Circuit Breaker, 3-Pole
SIPROTEC 5, High-Voltage Bay Controller, Manual 221
C53000-G5040-C015-9, Edition 11.2017