Arcteq Generator Commander, Instruction Manual

Page: 96 / 561

The blocking of the function causes an HMI display event and a time-stamped blocking event with
information of the startup current values and its fault type to be issued.
The blocking signal can also be tested in the commissioning phase by a software switch signal when
the relay's testing mode "Enable stage forcing" is activated ( General
→
Device).
The variables the user can set are binary signals from the system. The blocking signal needs to reach
the device minimum of 5 ms before the set operating delay has passed in order for the blocking to
activate in time.
Operating time characteristics for trip and reset
This function supports definite time delay (DT) and inverse definite minimum time delay (IDMT). For
detailed information on these delay types please refer to the chapter "General properties of a protection
function" and its section "Operating time characteristics for trip and reset".
Events and registers
The directional overcurrent function (abbreviated "DEF" 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. 5.4.5 - 77. Event messages.
Event block name Event name
DEF1 Start ON
DEF1 Start OFF
DEF1 Trip ON
DEF1 Trip OFF
DEF1 Block ON
DEF1 Block OFF
DEF1 I0Cosfi Start ON
DEF1 I0Cosfi Start OFF
DEF1 I0Sinfi Start ON
DEF1 I0Sinfi Start OFF
DEF1 I0Cosfi Trip ON
DEF1 I0Cosfi Trip OFF
DEF1 I0Sinfi Trip ON
DEF1 I0Sinfi Trip OFF
DEF2 Start ON
DEF2 Start OFF
DEF2 Trip ON
DEF2 Trip OFF
DEF2 Block ON
DEF2 Block OFF
Genera Generattor Commander or Commander
Instruction manual
Version: 2.07
94 © Arcteq Relays Ltd
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