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FIGURE NO.
3-25.
Blocking System Logic............................................................................................................ 3-29
3-26.
PLTG supplemented by FDOG............................................................................................... 3-29
3-27.
Power Reversed on POTT/Unblocking Schemes ................................................................... 3-30
3-28.
Unequal Pole Closing on Fault ............................................................................................... 3-30
3-29.
Additional Logic for POTT/Unblocking Schemes on 3-Terminal
Line Application....................................................................................................................... 3-31
3-30.
Additional Logic for PUTT Scheme on 3-Terminal
Line Application....................................................................................................................... 3-31
3-31.
Weakfeed Application ............................................................................................................. 3-32
3-32.
Reversible Zone 3 Phase and Ground (Reverse Block Logic) ............................................... 3-32
4-1.
MDAR Backplate....................................................................................................................... 4-7
4-2.
MDAR Backplane PC Board Terminals .................................................................................... 4-8
4-3.
MDAR System External Connection ......................................................................................... 4-9
6-1.
Test Connection for Single-Phase-to-Ground Faults (sheet 1 of 4)........................................ 6-14
6-2.
Test Connection for Three-Phase Faults (sheet 2 of 4).......................................................... 6-15
6-3.
Test Connection for Phase-to-Phase Faults (sheet 3 of 4)..................................................... 6-16
6-4.
Test Connection for Dual Polarizing Ground Directional Unit (sheet 4 of 4)........................... 6-17
6-5.
MDAR with Out-of-Step Block Option ..................................................................................... 6-18
SD-1.
MDAR System Logic Diagram ............................................................................................... SD-2
SD-2.
MDAR System Logic Diagram ............................................................................................... SD-3
SD-3.
MDAR System Logic Diagram ............................................................................................... SD-4
SD-4.
MDAR System Logic Diagram ............................................................................................... SD-5
SD-5.
MDAR Block Diagram ............................................................................................................ SD-6
(5/92)
ix
I.L. 40-385.1B
PAGE
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