Alstom MiCOM P125 - Submenu Blocking Logic

P12y/EN FT/D22 Technical Guide
User Guide
Page 76/108 MiCOM P125/P126/P127
4.6.3 Submenu Blocking Logic
The MiCOM P125 relay has the submenu Blocking Logic available for setting.
MiCOM P126 & P127 relays have the submenu Blocking Logic 1 and Blocking Logic
2 available for setting. By opening the Blocking Logic submenu the user can assign
each delayed threshold to the "Blk Log" input (refer to Inputs menu).
It is possible to enable or disable the “blocking” of most protection functions even if a
logic input has been assigned to that function. Blocking of a protection function can
be prevented if “No” is selected in the relevant window (see below). Blocking of a
protection function can be enabled if “Yes” is selected in the relevant window.
4.6.3.1 Submenu Blocking Logic for P125
AUTOMAT. CTRL
Heading of AUTOMAT. CTRL menu.
To gain access to the Blocking Logic submenu, press
2 and 6 until the submenu Blocking Logic is reached.
Blocking Logic
Heading of Blocking Logic submenu.
To navigate within submenu points, press 8 2. To
modify setting, press 5. Use 8 2 4 6 to scroll and set
available selections. Press 5 to confirm choice.
Block tIe>
No
Enables/disables Blocking Logic of the first trip
threshold for earth overcurrent from locking on the
level (logic state = 1) of logic input "Blk Log".
Setting choice: Yes, No
Block tIe>>
No
Enables/disables Blocking Logic of the second trip
threshold for earth overcurrent from locking on the
level (logic state = 1) of logic input "Blk Log".
Setting choice: Yes, No
Block tIe>>>
No
Enables/disables Blocking Logic of the third trip
threshold for earth overcurrent from locking on the
level (logic state = 1) of logic input "Blk Log".
Setting choice: Yes, No
Block
tPe/IeCos> No
Enables/disables Blocking Logic of the first earth
wattmetric trip threshold from locking on the level
(logic state 1) of logic input "Blk Log".
Setting choice: Yes, No
Block
tPe/IeCos>> No
Enables/disables Blocking Logic of the second earth
wattmetric trip threshold from locking on the level
(logic state 1) of logic input "Blk Log".
Setting choice: Yes, No
Block tUe>>>>
No
Enables/disables Blocking Logic of the trip threshold
for residual overvoltage from locking on the level (logic
state 1) of logic input "Blk log".
Setting choice: Yes, No