•
Operational indications: messages generated while the device is in operation: They include information
about the status of device functions, measurement data, system data, and similar information.
•
Fault indications: messages from the last eight system faults that were processed by the device.
•
Indications on Statistics: they include counters for the switching actions of the circuit breakers initiated
by the device, maybe reclose commands as well as values of interrupted currents and accumulated fault
currents.
A complete list of all indications and output functions generated by the device with the associated information
number (No.) can be found in the Appendix. This list also indicates where each indication can be sent. If
certain functions are not avaiable in a device version with reduced function scope or if they are configured as
in the function scope, then the associated indications will not appear.
Operational Indications
Operational indications contain information generated by the device during operation about operational
conditions.
Up to 200 operational indications are recorded in chronological order in the device. Newly generated indica-
tions are added to those already present. If the maximum capacity of the memory has been exceeded, the
oldest indication will be overwritten.
Operational indications arrive automatically and can be read out from the device display or a personal
computer at any time. Faults in the power system are indicated with “Network Fault” and the present fault
number. The fault indications contain detailed information on the response during system faults.
Fault Indications
Following a system fault it is possible to retrieve important information regarding its progress, such as pickup
and trip. The system clock accurately provides the absolute time when the fault first occurred. The fault
progression is output with a relative time referred to the instant of pickup so that the time until tripping and
until reset of the trip command can be recognized. The resolution of the time information is 1 ms.
A system fault starts with the recognition of a fault by the fault detection, i.e. first pickup of any protection
function, and ends with the reset of the fault detection, i.e. dropout of the last protection function. Where a
fault causes several protection functions to pick up, the fault is considered to include all that occurred
between pickup of the first protection function and dropout of the last protection function.
Spontaneous Displays
After a fault, the device displays automatically and without any operator action on its LCD display the most
important fault data from the general device pickup in the sequence shown in the following figure.
[anzeig-spontan-meld-displ-oz-251102, 1, en_GB]
Figure 2-75
Display of spontaneous messages in the display — Example
Retrievable Indications
The indications of the last eight system faults can be retrieved and read out. A total of 600 indications can be
stored. The oldest indications are erased for the newest fault indications when the buffer is full.
Spontaneous Indications
Spontaneous indications contain information that new indications have arrived. Each new incoming indication
appears immediately, i.e. the user does not have to wait for an update or initiate one. This can be a useful help
during operation, testing and commissioning.
Spontaneous indications can be read out via DIGSI. For more information see the SIPROTEC 4 System Descrip-
tion.
Functions
2.9 Auxiliary Functions
SIPROTEC 4, 7VK61, Manual
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C53000-G1176-C159-5, Edition 05.2018
Summary of Contents for SIPROTEC 4 7VK61
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