3521
55
THD1
1
THD Start Phase OFF
3522
55
THD1
2
THD Start I01 ON
3523
55
THD1
3
THD Start I01 OFF
3524
55
THD1
4
THD Start I02 ON
3525
55
THD1
5
THD Start I02 OFF
3526
55
THD1
6
THD Alarm Phase ON
3527
55
THD1
7
THD Alarm Phase OFF
3528
55
THD1
8
THD Alarm I01 ON
3529
55
THD1
9
THD Alarm I01 OFF
3530
55
THD1
10
THD Alarm I02 ON
3531
55
THD1
11
THD Alarm I02 OFF
3532
55
THD1
12
Blocked ON
3533
55
THD1
13
Blocked OFF
The function registers its operation into the last twelve (12) time-stamped registers. The register of the
function records the ON event process data for ACTIVATED, BLOCKED, etc. The table below
presents the structure of the function's register content.
Table. 5.6.3. - 113. Register content.
Date and
time
Event
code
L1h, L2h, L3h
pretriggering current
L1h, L2h, L3h Fault
current
L1h, L2h, L3h
Prefault current
Used SG
dd.mm.yyyy
hh:mm:ss.mss
3520-
3533 Descr.
Start -200 ms THD
averages of each phase.
Trip -20 ms THD
averages of each
phase.
Trip -200 ms
averages of each
phase.
Setting group
1...8 active.
5.6.4. Measurement value recorder
The measurement value recorder function records the value of the selected magnitudes at the time of a
pre-de ned trigger signal. An typical application is the recording of fault currents or voltages at the
time of the breaker trips; it can also be used to record the values from any trigger signal set by the
user. The user can select whether the function records per-unit values or primary values. Additionally,
the user can set the function to record overcurrent fault types or voltage fault types. The function
operates instantly from the trigger signal.
The measurement value recorder function has an integrated fault display which shows the current fault
values when the tripped by one of the following functions: I> (non-directional overcurrent), Idir>
(directional overcurrent), I0> (non-directional earth fault), I0dir> (directional earth fault), f<
(underfrequency), f> (overfrequency), U< (undervoltage) or U> (overvoltage). When any of these
functions trip, the fault values and the fault type are displayed in the Mimic view. The view can be
enabled by activating the "VREC Trigger on"setting (
Tools
→
Events and logs
→
Set alarm events
). The
resetting of the fault values is done by the input selected in the
General
menu.
Measured input
The function block uses analog current and voltage measurement values. Based on these values, the
relay calculates the primary and secondary values of currents, voltages, powers, and impedances as
well as other values.
The user can set up to eight (8) magnitudes to be recorded when the function is triggered. An
overcurrent fault type, a voltage fault type, and a tripped stage can be recorded and reported straight
to SCADA.
AQ-E215
Instruction manual
Version: 2.01
© Arcteq Relays Ltd
138