GE D90 Plus - Page 351

CHAPTER 7: PROTECTION CONTROL ELEMENTS
D90
PLUS
LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL 341
Figure 280: Autoreclose reclose-in-progress logic
After entering the reclose-in-progress state, a close command is issued after the dead time
delay. The dead time for the initial reclose operation is determined by either the
1-P Dead
Time, 3-P Dead Time 1, or 3-P Dead Time 2 setting, depending on the fault type and the
mode selected. After the dead time interval, the scheme asserts the AR CLOSE BKR 1 or AR
CLOSE BKR 2 operands, as determined by the sequence selected. These operands are
latched until the breaker closes or the scheme goes to reset or lockout.
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