Table of Contents
Advertisement
Routing Options
NT
(conditioned latching)
TL
(stored only with tripping)
8.4.8
Acknowledgment of Stored Indications
Acknowledgment on the On-Site Operation Panel
Acknowledgment via LED Reset key
Operating the key first causes the activation of all LEDs (LED test) when pressed, and when released, the reset-
ting of all stored indications. Stored LEDs, output contacts, and spontaneous fault displays are reset.
SIPROTEC 5, Operation, Manual
C53000-G5040-C003-J, Edition 07.2022
LEDs
BOs
BIs
Description
X
Fault indications are stored during control of the output
(LED) as a function of the parameter (_:91:139)
Fault-display. In the event of a new fault, the previ-
ously stored states are reset.
•
•
The following applies to the busbar protection:
•
•
X
Routing option TL (tripping stored) is only possible for the
switching object circuit breaker.
The output is saved with protection tripping. The contact
remains activated until acknowledged.
Control commands are not affected. A control command is
pending above the parameterized command period until
feedback has been successfully received.
Note:
You can realize the functionality of the Lockout (ANSI 86)
by storing the output relay with the routing option TL.
Operation in the Operating State
If the fault gets terminated via a trip command from
the assigned circuit breaker, the status of an indication
remains as latched with the setting option with
trip. Without a trip command, the status is displayed
before the fault (if necessary, the status of the last
fault) is restored.
With the setting option with pickup the current
indication image of a pickup gets stored. The image
comprises all indications of functions that are effective
in the event of tripping on the same circuit breaker,
like the picked up function.
If the fault gets terminated via a trip command, the
status of an indication remains as latched with the
setting option with trip.
This occurs separately for the following tripping cases:
–
Trippings caused by busbar protection (busbar
differential protection, busbar tripping following
a circuit-breaker failure protection trip in the bay
or busbar tripping due to external tripping)
–
Trippings caused by functions within the corre-
sponding bay (for example, end-fault protection,
circuit-breaker failure protection trip repeat or
overcurrent protection)
With the setting option with pickup, the current
indication image is saved using the same rules as with
the setting with trip but together with the pickup
of the protection function.
8.4 Indications
171
Advertisement
Table of Contents
