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 General properties of a protection function
The following flowchart describes the basic structure of any protection function. The basic structure is
composed of analog measurement values being compared to the pick-up values and operating time
characteristics.
A
AQ
Q-M215
-M215
Instruction manual
Version: 2.04
86