Functions
288
7UM62 Manual
C53000-G1176-C149-3
Figure 2-133 Display of Spontaneous Messages on the Device Front
Retrieved
Messages
The messages for the last eight network faults can be retrieved. Where a generator
fault causes several protective functions to pick up, the fault is considered to include
all that occurred between pickup of the first protective function and dropout of the last
protective function.
In total 600 messages can be recorded. Oldest data are erased for newest data when
the buffer is full.
2.45.1.3 General Interrogation
The present condition of a SIPROTEC
®
device can be retrieved by a general
interrogation using DIGSI
®
4. All messages included in a general interrogation are
displayed with their present value.
2.45.1.4 Spontaneous Annunciations
The spontaneous annunciations displayed using DIGSI
®
4 reflect the present status
of incoming information. New annunciations are displayed immediately, no triggered
or cyclic refreshment is required.
2.45.1.5 Statistical Counters
The messages in switching statistics are counters for the accumulation of interrupted
currents by each of the breaker poles, the number of trips issued by the device to the
breaker, and the operating hours of the breaker and protected equipment. The
interrupted currents are in primary terms.
Switching statistics can be viewed on the LCD of the device, or on a PC running
DIGSI
®
4 and connected to the operating or service interface.
A password is not required to read switching statistics; however, a password is
required to change or delete the statistics.
Information to a
Control Center
Stored information can also be transferred to a central control system (SCADA), using
the system interface. The transfer can take place using various transfer protocols.
Protective Function that picked up first;
Protective Function that dropped out last;
Running time from general pickup to dropout;
Running time from general pickup to the first trip command
U0> picked up
S/E/F TRIP
PU Time 440ms
TRIP Time 301ms
