Events and registers
The harmonic overcurrent function (abbreviated "HOC" 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. 5.4.7 - 89. Event description.
Event block name
Event names
HOC1
Start ON
HOC1
Start OFF
HOC1
Trip ON
HOC1
Trip OFF
HOC1
Block ON
HOC1
Block OFF
HOC2
Start ON
HOC2
Start OFF
HOC2
Trip ON
HOC2
Trip OFF
HOC2
Block ON
HOC2
Block OFF
HOC3
Start ON
HOC3
Start OFF
HOC3
Trip ON
HOC3
Trip OFF
HOC3
Block ON
HOC3
Block OFF
HOC4
Start ON
HOC4
Start OFF
HOC4
Trip ON
HOC4
Trip OFF
HOC4
Block ON
HOC4
Block 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 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
108
© Arcteq Relays Ltd
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Summary of Contents for Generator Commander
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