Frequency tracker
quality
("f.tr qual")
0: No
trackable
channels
1:
Reference 1
trackable
2:
Reference 2
trackable
3:
References
1 & 2
trackable
4:
Reference 3
trackable
5:
Reference 1
& 3
trackable
6:
References
2 & 3
trackable
7: All
references
trackable
-
-
De nes the frequency tracker quality. If the measured
current (or voltage) amplitude is below the threshold,
the channel tracking quality is 0 and cannot be used for
frequency tracking. If all channels' magnitudes are below
the threshold, there are no trackable channels.
Frequency
measurement in use
("f.meas in use")
0: No track
ch
1: Ref1
2: Ref2
3: Ref3
-
-
Indicates which reference is used at the moment for
frequency tracking.
Start behavior
0: Start
tracking
immediately
1:
First nominal
or tracked
-
0: Start
tracking
immediately
De nes the how the tracking starts. Tracking can start
immediately, or there can be a set delay time between the
receiving of the rst trackable channel and the start of the
tracking.
Start sampling with
("Start smpl with")
0: Use track
frequency
1: Use nom
frequency
-
0: Use
track
frequency
De nes the start of the sampling. Sampling can begin with
a previously tracked frequency, or with a user-set nominal
frequency.
Use
nominal frequency until
("Use nom freq until")
0…
1800.000s
0.005s
0.100s
De nes how long the nominal frequency is used after the
tracking has started. This setting is only valid when the
"Sampling mode" setting is set to "Tracking" and when the
"Start behavior" is set to "First nominal or tracked".
Channel A tracked
frequency
("Tracked f CHA")
0.000…
75.000 Hz
0.001 Hz 50 Hz
Displays the rough value of the tracked frequency in
Channel A.
Channel B tracked
frequency
("Tracked f CHB")
0.000…
75.000 Hz
0.001 Hz 50 Hz
Displays the rough value of the tracked frequency in
Channel B.
Channel C tracked
frequency
("Tracked f CHC")
0.000…
75.000 Hz
0.001 Hz 50 Hz
Displays the rough value of the tracked frequency in
Channel C.
5.3. Fault indicating functions
5.3.1. Non-directional overcurrent (I>; 50)
The non-directional overcurrent function is used for instant overcurrent and short-circuit fault alarms.
The output of the function is the ALARM signal. The setting group selection controls the operating
characteristics of the function during normal operation, i.e. the user or user-de ned logic can change
function parameters while the function is running. The non-directional overcurrent function uses a total
of eight (8) separate setting groups which can be selected from one common source.
The operational logic consists of the following:
AQ-E215
Instruction manual
Version: 2.01
© Arcteq Relays Ltd
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