GE MiCOM P143 Agile User Manual

7.1.2 OPERATING MODE SELECTION LOGIC
V00501
Auto-Reclose
AR LiveLine Mode
Disable
Enable
Auto Mode (int)
Live Line Mode (int)&
AR Mode Select
Command Mode
Opto Set Mode
User Set Mode
Pulse Set Mode
Autoreclose Mode
Telecontrol Mode
No Operation
Auto
Non Auto
AR Auto Mode
&
&
&
Enable
Output pulse on
rising edge of ‘Tele’
Enable
Output pulse on
falling edge of ‘Auto’
&
&
&
&
1
S
R
Q
1
&
&
&
&
&
&
&
&
1 &
Non Auto Mode
&
Autoreclose disabled
Figure 146: Autoreclose mode select logic
The mode selection logic includes a 100 ms delay for A
uto Mode, Telecontrol and Live Line logic inputs, to ensure
a predictable change of operating modes. This is of particular importance for the case when the four position
switch does not have 'make-before-break' contacts. The logic also ensures that when the switch is moved from
Auto or Non-Auto position to Telecontrol, the scheme remains in the previously selected mode (Auto or Non-Auto)
until a different mode is selected by remote control.
For applications where live line operating mode and remote selection of Auto/Non-auto modes are not required, a
simple two position switch can be arranged to activate Auto Mode input. In this case, the Live Line and
Telecontrol inputs would be unused.
7.2 AUTORECLOSE INITIATION
Autoreclose is usually initiated from the IED's internal protection function. Different stages of phase overcurrent
and earth fault pr
otection can be programmed to initiate or block the main Autoreclose function. The stages of
sensitive earth fault protection can also be programmed to initiate or block both the Main Autoreclose function or
the SEF Autoreclose function.
The associated settings are found in the AUTORECLOSE column under the sub-heading AR INITIATION.
P14x Chapter 13 - Autoreclose
P14xEd1-TM-EN-1 289

GE MiCOM P143 Agile Specifications

General

Brand	GE
Model	MiCOM P143 Agile
Category	Control Unit
Language	English