Toshiba GRD150 Series Instruction Manual page 101

Feeder manager

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(Trip command)

(Trip command)

Figure 2.5.3 Scheme Logic of Second to Fifth Shot Autoreclose

Sequence coordination

Co-ordination is maintained between the autoreclose sequences of adjacent relays on a feeder.

This means that a relay will register the flow of fault current and increment through its autoreclose

sequence even if another relay actually carries out the tripping and reclosing operations. This

function is initiated by the operation of OC, EF or SEF element, and can be disabled by the scheme

switch [COORD-OC], [COORD-EF] or [COORD-SE].

The reclose shot number at the local terminal A is coordinated with that at the adjacent terminal B

as shown in Figure 2.5.4.

0.01-300.00s

0.01-310.00s

0.01-300.00s

0.01-310.00s

0.01-300.00s

0.01-310.00s

0.01-300.00s

0.01-310.00s

0.01-300.00s

0.01-310.00s

0.01-300.00s

0.01-310.00s

0.01-300.00s

0.01-310.00s

0.01-300.00s

0.01-310.00s

Figure 2.5.4

ARC1-S2 COND

ARC1-S3 COND

ARC1-S4 COND

ARC1-S5 COND

ARC2-S2 COND

ARC2-S3 COND

ARC2-S4 COND

ARC2-S5 COND

Sequence Coordination

6 F 2 S 0 8 4 2