GE D90 Plus - Page 360

350 D90
PLUS
LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
CONTROL ELEMENTS CHAPTER 7: PROTECTION
• Breaker 2 issues a manual close signal, sequence 1 is not selected, and breaker 1 is
either open or out-of-service
Alternately, a user-defined setting is available to generate this signal.
Figure 294: Autoreclose manual close logic
Terminal closed
The close logic uses the status of each breaker to determine whether the terminal is
closed. For single breaker applications, it is necessary to monitor the closed status of the
particular breaker. For dual breaker applications, the logic checks that either or both
breakers are closed and not out-of-service. Alternately, a user-defined setting is available
to generate this signal.
Figure 295: Autoreclose closing logic, sheet 1 of 2
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