GE D90 Plus - Page 385

CHAPTER 7: PROTECTION CONTROL ELEMENTS
D90
PLUS
LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL 375
Figure 313: Breaker flashover logic, sheet 1 of 2
Figure 314: Breaker flashover logic, sheet 2 of 2
Three VT breaker flashover application
When only one set of VTs is available across the breaker, set the Side 2 setting to “None.” To
detect an open breaker condition in this application, the scheme checks if the per-phase
voltages were recovered (picked up), the status of the breaker is open (contact input
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