Events and registers
The neutral overvoltage function (abbreviated "NOV" in event block names) generates events and
registers from the status changes in START, TRIP, and BLOCKED. The user can select which event
messages are stored in the main event buffer: ON, OFF, or both. The function offers four (4)
independent stages; the events are segregated for each stage operation.
The events triggered by the function are recorded with a time stamp and with process data values.
Table. 5.4.11 - 123. Event messages.
Event block name
Event names
NOV1
Start ON
NOV1
Start OFF
NOV1
Trip ON
NOV1
Trip OFF
NOV1
Block ON
NOV1
Block OFF
NOV2
Start ON
NOV2
Start OFF
NOV2
Trip ON
NOV2
Trip OFF
NOV2
Block ON
NOV2
Block OFF
NOV3
Start ON
NOV3
Start OFF
NOV3
Trip ON
NOV3
Trip OFF
NOV3
Block ON
NOV3
Block OFF
NOV4
Start ON
NOV4
Start OFF
NOV4
Trip ON
NOV4
Trip OFF
NOV4
Block ON
NOV4
Block OFF
The function registers its operation into the last twelve (12) time-stamped registers; this information is
available for all provided instances separately. The register of the function records the ON event
process data for START, TRIP or BLOCKED. The table below presents the structure of the function's
register content.
Genera
Generattor Commander
or Commander
Instruction manual
Version: 2.07
© Arcteq Relays Ltd
IM00001
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Summary of Contents for Generator Commander
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