Name
Range
Step
Default
Description
Tracked f
channel C
0.000…75.000Hz 0.001Hz -
Displays the rough value of the tracked frequency in Channel
C.
Alg f fast
0.000…75.000Hz 0.001Hz -
Frequency measurement built from tracked frequencies and
U4 voltage channel samples.
Alg f avg
0.000…75.000Hz 0.001Hz -
Averaged frequency measurement built from tracked
frequencies and U4 voltage channel samples.
System
measured
frequency
0: One f
measured
1: Two f
measured
2: Three f
measured
-
-
Displays the amount of frequencies that are measured.
f.atm.
Protections
0.000…75.000Hz 0.001Hz -
Frequency measurement value used by protection functions.
When frequency is not measurable this value returns to value
set to "System nominal frequency" parameter.
f.atm. Display
0.000…75.000Hz 0.001Hz -
Frequency measurement value used in display. When
frequency is not measurable this value is "0 Hz".
f
measurement
from
0: Not
measurable
1: Avg Ref 1
2: Avg Ref 2
3: Avg Ref 3
4: Track Ref 1
5: Track Ref 2
6: Track Ref 3
7: Fast Ref 1
8: Fast Ref 2
9: Fast Ref 3
-
-
Displays which reference is used for frequency measurement.
SS1.meas.frqs
0.000…75.000Hz 0.001Hz -
Displays frequency used by "system set" channel 1 and 2.
SS2.meas.frqs
SS1f
meas.from
0: Not
measurable
1: Fast Ref U3
2: Fast Ref U4
-
-
Displays which voltage channel frequency reference is used by
"system set" voltage channel.
SS2f
meas.from
0: Not
measurable
1: Fast Ref U4
-
-
Displays if U4 channel frequency reference is measurable or
not when the channel has been set to "system set" mode.
5.3 Protection functions
5.3.1 Circuit breaker failure protection (CBFP; 50BF/52BF)
The circuit breaker failure protection function is used for monitoring the circuit breaker operation after it
has received a TRIP signal. The function can also be used to retrip a failing breaker; if the retrip fails, an
incomer breaker can be tripped by using the function's CBFP output. The retrip functionality can be
disabled if the breaker does not have two trip coils.
The function can be triggered by the following:
• overcurrent (phase and residual)
• digital output monitor
• digital signal
• any combination of the above-mentioned triggers.
A
AQ
Q-S215
-S215
Instruction manual
Version: 2.04
81
Summary of Contents for AQ-S215
Page 1: ...AQ S215 Bay control IED Instruction manual...
Page 249: ...Figure 7 4 151 Example block scheme A AQ Q S215 S215 Instruction manual Version 2 04 248...
Page 269: ...Figure 8 13 172 Device installation A AQ Q S215 S215 Instruction manual Version 2 04 268...
Page 287: ...10 Ordering information A AQ Q S215 S215 Instruction manual Version 2 04 286...