GE MiCOM P143 Agile User Manual

7.2.5 AR INITIATION LOGIC
V00505
Auto Mode (int)
Lockout Alarm
Main Protection Trip
Main Protection Start
&
Sequence Co -ord
Disabled
Enabled
1
Main High Shots
SEF Protection Trip
SEF Protection Start
SEF High Shots
&
1
&
&
Autoreclose Inhibit
CB in Service
Lockout Alarm
DAR Complete
AR Restart
Autoreclose Disabled
Non Auto Mode
Reclaim Complete
Live Line Mode
1
S
R
Q
SC Counter
1
1
S
R
Q
Autoreclose Initiate
AR in Progress
DAR in Progress
AR SeqCounter 0
AR SeqCounter 1
AR SeqCounter 2
AR SeqCounter 3
AR SeqCounter 4
SC Count > 4
SC Count >= Main Shots
SC Count >= SEF Shots
Increment on falling
edge
Reset
Number of Shots
Number SEF Shots
Autoreclose Start
Figure 151: AR initiation logic
7.3 BLOCKING INSTANTANEOUS PROTECTION FOR SELECTED TRIPS
Instantaneous protection may be blocked or not blocked for each trip in an Autoreclose cycle. This is selected
using the Trip (n) Main
and Trip (n) SEF settings, where n is the number of the trip in the autoreclose cycle. These
allow the instantaneous elements of phase, earth fault and SEF protection to be selectively blocked for a CB trip
sequence. For example, if Trip 1 Main is set to No Block and Trip 2 Main is set to Block Inst Prot, the
instantaneous elements of the phase and earth fault protection will be available for the first trip but blocked
afterwards for the second trip during the Autoreclose cycle. The logic for this is shown below.
P14x Chapter 13 - Autoreclose
P14xEd1-TM-EN-1 293

GE MiCOM P143 Agile Specifications

General

Brand	GE
Model	MiCOM P143 Agile
Category	Control Unit
Language	English