Arcteq AQ-T256, Инструкция по эксплуатации

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Events and registers
The total harmonic distortion monitor function (abbreviated "THD" in event block names) generates
events and registers from the status changes in the alarm function when it is activated. The recorded
signals are START and ALARM signals for the monitoring elements as well as common 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.
Table. 5.5.3 - 145. Event messages.
Event block name Event names
THD1 THD Start Phase ON
THD1 THD Start Phase OFF
THD1 THD Start I01 ON
THD1 THD Start I01 OFF
THD1 THD Start I02 ON
THD1 THD Start I02 OFF
THD1 THD Alarm Phase ON
THD1 THD Alarm Phase OFF
THD1 THD Alarm I01 ON
THD1 THD Alarm I01 OFF
THD1 THD Alarm I02 ON
THD1 THD Alarm I02 OFF
THD1 Blocked ON
THD1 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. 5.5.3 - 146. Register content.
Date and time Event
L1h, L2h, L3h
pretriggering current
L1h, L2h, L3h
Fault current
L1h, L2h, L3h
Prefault current
Used SG
dd.mm.yyyy
hh:mm:ss.mss
Event
name
Start/alarm -20ms THD of
each phase.
Start/Alarm THD of
each phase.
Start -200 ms THD of
each phase.
Setting group
1...8 active.
5.5.4 Disturbance recorder (DR)
The disturbance recorder is a high-capacity (64 MB permanent flash memory) and fully digital recorder
integrated to the protection relay. The maximum sample rate of the recorder's analog channels is 64
samples per cycle. The recorder also supports 95 digital channels simultaneously with the twenty (20)
measured analog channels. Maximum capacity of recordings is 100.
A AQ Q-T256 -T256
Instruction manual
Version: 2.06
© Arcteq Relays Ltd
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