Table. 5.5.2 - 176. Information displayed by the function.
Name
Range
Step
Description
VTS
condition
0: Normal
1: Start
2: VTLinefail
3: VTBusfail
4: Blocked
-
Displays status of the monitoring function.
Bus
voltages
0: Bus dead
1: Bus Live VTS Ok
SEQ Ok
2: Bus Live VTS Ok
SEQ Rev
3: Bus Live VTS Ok
SEQ Undef
4: Bus Live VTS
problem
-
Displays the status of bus voltages.
Expected
operating
time
0.000...1800.000s
0.005s Displays the expected operating time when a fault occurs.
Time
remaining
to trip
-1800.000...1800.000s 0.005s When the function has detected a fault and counts down time towards a
operation, this displays how much time is left before operation occurs.
Function blocking
The block signal is checked in the beginning of each program cycle. The blocking signal is received
from the blocking matrix in the function's dedicated input. If the blocking signal is not activated when
the pick-up element activates, a START signal is generated and the function proceeds to the time
characteristics calculation.
If the blocking signal is active when the pick-up element activates, a BLOCKED signal is generated and
the function does not process the situation further. If the START function has been activated before the
blocking signal, it resets and the release time characteristics are processed similarly to when the pick-
up signal is reset.
The blocking of the function causes an HMI display event and a time-stamped blocking event with
information of the startup voltage values and its fault type to be issued.
The blocking signal can also be tested in the commissioning phase by a software switch signal when
the relay's testing mode "Enable stage forcing" is activated (
General
→
Device).
The variables the user can set are binary signals from the system. The blocking signal needs to reach
the device minimum of 5 ms before the set operating delay has passed in order for the blocking to
activate in time.
Operating time characteristics for activation
This function supports definite time delay (DT). For detailed information on this delay type please refer
to the chapter "General properties of a protection function" and its section "Operating time
characteristics for trip and reset".
Events and registers
The voltage transformer supervision function (abbreviated "VTS" in event block names) generates
events and registers from the status changes in ALARM ACTIVATED and BLOCKED signals. The user
can select which event messages are stored in the main event buffer: ON, OFF, or both.
The events triggered by the function are recorded with a time stamp and with process data values.
A
AQ
Q-C213
-C213
Instruction manual
Version: 2.04
261
Содержание AQ-C213
Страница 1: ...AQ C213 Capacitor bank protection IED Instruction manual ...
Страница 308: ...Figure 7 4 184 Example block scheme A AQ Q C213 C213 Instruction manual Version 2 04 307 ...
Страница 330: ...Figure 8 14 207 Panel cutout dimensions and device spacing A AQ Q C213 C213 Instruction manual Version 2 04 329 ...