IG-150-EN version 04; 03/10/16
58
Protection functions. Description and settings General instructions
ekor.rps
4.3. Instantaneous special operation
The settings corresponding to the phase, neutral and
sensitive neutral instantaneous (only in the low level), are
extended with the settings below:
Special operation: Options:
NO
Enab. after closing (enable ONLY after closing)
Tim. after closing (timing after closing)
Tim. after reclosing 1 (timing after reclosing 1)
Special xed time. It is the instantaneous operation time,
during the special operation.
Special operation time. It is the time during which the
special operation is maintained.
In the trip permission screen there are
independent masks for every instantaneous
level.
The operation described below implies
the setting “enable” be at YES and that the
recloser is “in service” (although it can be
blocked).
It is enabled at “NO”; the instantaneous is disable under any
condition.
If the recloser is out of service, the masks do not have any
eect.
Operation (with setting of the function enable at YES):
Option “NO”. Everything operates as now.
“Enable only after closing” option.
After any closing (manual or automatic), if the corresponding
mask in the trip permission screen is at YES, during “Special
operation time”, the instantaneous operates with the
additional time “Special xed time”; outside the special
operation time the instantaneous is disabled.
The “Special operation time” is initiated in each closing.
If the corresponding mask is at NO, the instantaneous is
disabled.
Figure 4.1. Instantaneous special operation
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